1# $OpenBSD: asia,v 1.108 2024/01/02 22:43:20 millert Exp $ 2# tzdb data for Asia and environs 3 4# This file is in the public domain, so clarified as of 5# 2009-05-17 by Arthur David Olson. 6 7# This file is by no means authoritative; if you think you know better, 8# go ahead and edit the file (and please send any changes to 9# tz@iana.org for general use in the future). For more, please see 10# the file CONTRIBUTING in the tz distribution. 11 12# From Paul Eggert (2019-07-11): 13# 14# Unless otherwise specified, the source for data through 1990 is: 15# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 16# San Diego: ACS Publications, Inc. (2003). 17# Unfortunately this book contains many errors and cites no sources. 18# 19# Many years ago Gwillim Law wrote that a good source 20# for time zone data was the International Air Transport 21# Association's Standard Schedules Information Manual (IATA SSIM), 22# published semiannually. Law sent in several helpful summaries 23# of the IATA's data after 1990. Except where otherwise noted, 24# IATA SSIM is the source for entries after 1990. 25# 26# Another source occasionally used is Edward W. Whitman, World Time Differences, 27# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which 28# I found in the UCLA library. 29# 30# For data circa 1899, a common source is: 31# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 32# https://www.jstor.org/stable/1774359 33# 34# For Russian data circa 1919, a source is: 35# Byalokoz EL. New Counting of Time in Russia since July 1, 1919. 36# (See the 'europe' file for a fuller citation.) 37# 38# The following alphabetic abbreviations appear in these tables 39# (corrections are welcome): 40# std dst 41# LMT Local Mean Time 42# 2:00 EET EEST Eastern European Time 43# 2:00 IST IDT Israel 44# 5:30 IST India 45# 7:00 WIB west Indonesia (Waktu Indonesia Barat) 46# 8:00 WITA central Indonesia (Waktu Indonesia Tengah) 47# 8:00 CST China 48# 8:00 HKT HKST Hong Kong (HKWT* for Winter Time in late 1941) 49# 8:00 PST PDT* Philippines 50# 8:30 KST KDT Korea when at +0830 51# 9:00 WIT east Indonesia (Waktu Indonesia Timur) 52# 9:00 JST JDT Japan 53# 9:00 KST KDT Korea when at +09 54# *I invented the abbreviations HKWT and PDT; see below. 55# Otherwise, these tables typically use numeric abbreviations like +03 56# and +0330 for integer hour and minute UT offsets. Although earlier 57# editions invented alphabetic time zone abbreviations for every 58# offset, this did not reflect common practice. 59# 60# See the 'europe' file for Russia and Turkey in Asia. 61 62# From Guy Harris: 63# Incorporates data for Singapore from Robert Elz' asia 1.1, as well as 64# additional information from Tom Yap, Sun Microsystems Intercontinental 65# Technical Support (including a page from the Official Airline Guide - 66# Worldwide Edition). 67 68############################################################################### 69 70# These rules are stolen from the 'europe' file. 71# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 72Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S 73Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 - 74Rule EUAsia 1996 max - Oct lastSun 1:00u 0 - 75Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 - 76Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 - 77Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 - 78Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 - 79Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 - 80Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 - 81Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 - 82Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 - 83 84# Afghanistan 85# Zone NAME STDOFF RULES FORMAT [UNTIL] 86Zone Asia/Kabul 4:36:48 - LMT 1890 87 4:00 - +04 1945 88 4:30 - +0430 89 90# Armenia 91# From Paul Eggert (2006-03-22): 92# Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST) 93# in spring 1991, then to 4:00 with no DST in fall 1995, then 94# readopting Russian DST in 1997. Go with Shanks & Pottenger, even 95# when they disagree with others. Edgar Der-Danieliantz 96# reported (1996-05-04) that Yerevan probably wouldn't use DST 97# in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that 98# Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991, 99# but started switching at 3:00s in 1998. 100 101# From Arthur David Olson (2011-06-15): 102# While Russia abandoned DST in 2011, Armenia may choose to 103# follow Russia's "old" rules. 104 105# From Alexander Krivenyshev (2012-02-10): 106# According to News Armenia, on Feb 9, 2012, 107# http://newsarmenia.ru/society/20120209/42609695.html 108# 109# The Armenia National Assembly adopted final reading of Amendments to the 110# Law "On procedure of calculation time on the territory of the Republic of 111# Armenia" according to which Armenia [is] abolishing Daylight Saving Time. 112# or 113# (brief) 114# http://www.worldtimezone.com/dst_news/dst_news_armenia03.html 115# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 116Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 - 117Rule Armenia 2011 only - Oct lastSun 2:00s 0 - 118# Zone NAME STDOFF RULES FORMAT [UNTIL] 119Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2 120 3:00 - +03 1957 Mar 121 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 122 3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s 123 4:00 - +04 1997 124 4:00 RussiaAsia +04/+05 2011 125 4:00 Armenia +04/+05 126 127# Azerbaijan 128 129# From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23): 130# According to the resolution of Cabinet of Ministers, 1997 131# From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17). 132# http://code.az/files/daylight_res.pdf 133 134# From Steffen Thorsen (2016-03-17): 135# ... the Azerbaijani Cabinet of Ministers has cancelled switching to 136# daylight saving time.... 137# https://www.azernews.az/azerbaijan/94137.html 138# http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html 139# http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html 140 141# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 142Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 - 143Rule Azer 1997 2015 - Oct lastSun 5:00 0 - 144# Zone NAME STDOFF RULES FORMAT [UNTIL] 145Zone Asia/Baku 3:19:24 - LMT 1924 May 2 146 3:00 - +03 1957 Mar 147 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 148 3:00 RussiaAsia +03/+04 1992 Sep lastSun 2:00s 149 4:00 - +04 1996 150 4:00 EUAsia +04/+05 1997 151 4:00 Azer +04/+05 152 153# Bahrain 154# Zone NAME STDOFF RULES FORMAT [UNTIL] 155Zone Asia/Bahrain 3:22:20 - LMT 1941 Jul 20 # Manamah 156 3:30 - +0330 1944 Jan 1 157 4:00 - +04 1972 Jun 158 3:00 - +03 159 160# Bangladesh 161# From Alexander Krivenyshev (2009-05-13): 162# According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce 163# Daylight Saving Time from June 16 to Sept 30 164# 165# Bangladesh to introduce daylight saving time likely from June 16 166# http://www.asiantribune.com/?q=node/17288 167# http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html 168# 169# "... Bangladesh government has decided to switch daylight saving time from 170# June 171# 16 till September 30 in a bid to ensure maximum use of daylight to cope with 172# crippling power crisis. " 173# 174# The switch will remain in effect from June 16 to Sept 30 (2009) but if 175# implemented the next year, it will come in force from April 1, 2010 176 177# From Steffen Thorsen (2009-06-02): 178# They have finally decided now, but changed the start date to midnight between 179# the 19th and 20th, and they have not set the end date yet. 180# 181# Some sources: 182# https://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601 183# http://bdnews24.com/details.php?id=85889&cid=2 184# 185# Our wrap-up: 186# https://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html 187 188# From A. N. M. Kamrus Saadat (2009-06-15): 189# Finally we've got the official mail regarding DST start time where DST start 190# time is mentioned as Jun 19 2009, 23:00 from BTRC (Bangladesh 191# Telecommunication Regulatory Commission). 192# 193# No DST end date has been announced yet. 194 195# From Alexander Krivenyshev (2009-09-25): 196# Bangladesh won't go back to Standard Time from October 1, 2009, 197# instead it will continue DST measure till the cabinet makes a fresh decision. 198# 199# Following report by same newspaper-"The Daily Star Friday": 200# "DST change awaits cabinet decision-Clock won't go back by 1-hr from Oct 1" 201# http://www.thedailystar.net/newDesign/news-details.php?nid=107021 202# http://www.worldtimezone.com/dst_news/dst_news_bangladesh04.html 203 204# From Steffen Thorsen (2009-10-13): 205# IANS (Indo-Asian News Service) now reports: 206# Bangladesh has decided that the clock advanced by an hour to make 207# maximum use of daylight hours as an energy saving measure would 208# "continue for an indefinite period." 209# 210# One of many places where it is published: 211# http://www.thaindian.com/newsportal/business/bangladesh-to-continue-indefinitely-with-advanced-time_100259987.html 212 213# From Alexander Krivenyshev (2009-12-24): 214# According to Bangladesh newspaper "The Daily Star," 215# Bangladesh will change its clock back to Standard Time on Dec 31, 2009. 216# 217# Clock goes back 1-hr on Dec 31 night. 218# http://www.thedailystar.net/newDesign/news-details.php?nid=119228 219# http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html 220# 221# "...The government yesterday decided to put the clock back by one hour 222# on December 31 midnight and the new time will continue until March 31, 223# 2010 midnight. The decision came at a cabinet meeting at the Prime 224# Minister's Office last night..." 225 226# From Alexander Krivenyshev (2010-03-22): 227# According to Bangladesh newspaper "The Daily Star," 228# Cabinet cancels Daylight Saving Time 229# http://www.thedailystar.net/newDesign/latest_news.php?nid=22817 230# http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html 231 232# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 233Rule Dhaka 2009 only - Jun 19 23:00 1:00 - 234Rule Dhaka 2009 only - Dec 31 24:00 0 - 235 236# Zone NAME STDOFF RULES FORMAT [UNTIL] 237Zone Asia/Dhaka 6:01:40 - LMT 1890 238 5:53:20 - HMT 1941 Oct # Howrah Mean Time? 239 6:30 - +0630 1942 May 15 240 5:30 - +0530 1942 Sep 241 6:30 - +0630 1951 Sep 30 242 6:00 - +06 2009 243 6:00 Dhaka +06/+07 244 245# Bhutan 246# Zone NAME STDOFF RULES FORMAT [UNTIL] 247Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu 248 5:30 - +0530 1987 Oct 249 6:00 - +06 250 251# British Indian Ocean Territory 252# Whitman and the 1995 CIA time zone map say 5:00, but the 253# 1997 and later maps say 6:00. Assume the switch occurred in 1996. 254# We have no information as to when standard time was introduced; 255# assume it occurred in 1907, the same year as Mauritius (which 256# then contained the Chagos Archipelago). 257# Zone NAME STDOFF RULES FORMAT [UNTIL] 258Zone Indian/Chagos 4:49:40 - LMT 1907 259 5:00 - +05 1996 260 6:00 - +06 261 262# Brunei 263# Zone NAME STDOFF RULES FORMAT [UNTIL] 264Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan 265 7:30 - +0730 1933 266 8:00 - +08 267 268# Myanmar (Burma) 269 270# Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon. 271 272# From Paul Eggert (2017-04-20): 273# Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is 274# used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead 275# of Greenwich." This refers to the period before Burma's transition to +0630, 276# a transition for which Shanks is the only source. 277 278# Zone NAME STDOFF RULES FORMAT [UNTIL] 279Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon 280 6:24:47 - RMT 1920 # Rangoon local time 281 6:30 - +0630 1942 May 282 9:00 - +09 1945 May 3 283 6:30 - +0630 284 285# Cambodia 286# Zone NAME STDOFF RULES FORMAT [UNTIL] 287Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1 288 7:06:30 - PLMT 1911 May 1 289 7:00 - +07 1942 Dec 31 23:00 290 8:00 - +08 1945 Mar 14 23:00 291 9:00 - +09 1945 Sep 2 292 7:00 - +07 293 294# China 295 296# From Phake Nick (2020-04-15): 297# According to this news report: 298# http://news.sina.com.cn/c/2004-09-01/19524201403.shtml 299# on April 11, 1919, newspaper in Shanghai said clocks in Shanghai will spring 300# forward for an hour starting from midnight of that Saturday. The report did 301# not mention what happened in Shanghai thereafter, but it mentioned that a 302# similar trial in Tianjin which ended at October 1st as citizens are told to 303# recede the clock on September 30 from 12:00pm to 11:00pm. The trial at 304# Tianjin got terminated in 1920. 305# 306# From Paul Eggert (2020-04-15): 307# The Returns of Trade and Trade Reports, page 711, says "Daylight saving was 308# given a trial during the year, and from the 12th April to the 1st October 309# the clocks were all set one hour ahead of sun time. Though the scheme was 310# generally esteemed a success, it was announced early in 1920 that it would 311# not be repeated." 312# 313# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 314Rule Shang 1919 only - Apr 12 24:00 1:00 D 315Rule Shang 1919 only - Sep 30 24:00 0 S 316 317# From Paul Eggert (2018-10-02): 318# The following comes from Table 1 of: 319# Li Yu. Research on the daylight saving movement in 1940s Shanghai. 320# Nanjing Journal of Social Sciences. 2014;(2):144-50. 321# http://oversea.cnki.net/kns55/detail.aspx?dbname=CJFD2014&filename=NJSH201402020 322# The table lists dates only; I am guessing 00:00 and 24:00 transition times. 323# Also, the table lists the planned end of DST in 1949, but the corresponding 324# zone line cuts this off on May 28, when the Communists took power. 325 326# From Phake Nick (2020-04-15): 327# 328# For the history of time in Shanghai between 1940-1942, the situation is 329# actually slightly more complex than the table [below].... At the time, 330# there were three different authorities in Shanghai, including Shanghai 331# International Settlement, a settlement established by western countries with 332# its own westernized form of government, Shanghai French Concession, similar 333# to the international settlement but is controlled by French, and then the 334# rest of the city of Shanghai, which have already been controlled by Japanese 335# force through a puppet local government (Wang Jingwei regime). It was 336# additionally complicated by the circumstances that, according to the 1940s 337# Shanghai summer time essay cited in the database, some 338# departments/businesses/people in the Shanghai city itself during that time 339# period, refused to change their clock and instead only changed their opening 340# hours. 341# 342# For example, as quoted in the article, in 1940, other than the authority 343# itself, power, tram, bus companies, cinema, department stores, and other 344# public service organizations have all decided to follow the summer time and 345# spring forward the clock. On the other hand, the custom office refused to 346# spring forward the clock because of worry on mechanical wear to the physical 347# clock, postal office refused to spring forward because of disruption to 348# business and log-keeping, although they did changed their office hour to 349# match rest of the city. So is travel agents, and also weather 350# observatory. It is said both time standards had their own supporters in the 351# city at the time, those who prefer new time standard would have moved their 352# clock while those who prefer the old time standard would keep their clock 353# unchange, and there were different clocks that use different time standard 354# in the city at the time for people who use different time standard to adjust 355# their clock to their preferred time. 356# 357# a. For the 1940 May 31 spring forward, the essay [says] ... "Hong 358# Kong government implemented the spring forward in the same time on 359# the same date as Shanghai". 360# 361# b. For the 1940 fall back, it was said that they initially intended to do 362# so on September 30 00:59 at night, however they postponed it to October 12 363# after discussion with relevant parties. However schools restored to the 364# original schedule ten days earlier. 365# 366# c. For the 1941 spring forward, it is said to start from March 15 367# "following the previous year's method", and in addition to that the essay 368# cited an announcement in 1941 from the Wang regime which said the Special 369# City of Shanghai under Wang regime control will follow the DST rule set by 370# the Settlements, irrespective of the original DST plan announced by the Wang 371# regime for other area under its control(April 1 to September 30). (no idea 372# to situation before that announcement) 373# 374# d. For the 1941 fall back, it was said that the fall back would occurs at 375# the end of September (A newspaper headline cited by the essay, published on 376# October 1, 1941, have the headlines which said "French Concession would 377# rewind to the old clock this morning), but it ultimately didn't happen due 378# to disagreement between the international settlement authority and the 379# French concession authority, and the fall back ultimately occurred on 380# November 1. 381# 382# e. In 1941 December, Japan have officially started war with the United 383# States and the United Kingdom, and in Shanghai they have marched into the 384# international settlement, taken over its control 385# 386# f. For the 1942 spring forward, the essay said that the spring forward 387# started on January 31. It said this time the custom office and postal 388# department will also change their clocks, unlike before. 389# 390# g. The essay itself didn't cover any specific changes thereafter until the 391# end of the war, it quoted a November 1942 command from the government of the 392# Wang regime, which claim the daylight saving time applies year round during 393# the war. However, the essay ambiguously said the period is "February 1 to 394# September 30", which I don't really understand what is the meaning of such 395# period in the context of year round implementation here.. More researches 396# might be needed to show exactly what happened during that period of time. 397 398# From Phake Nick (2020-04-15): 399# According to a Japanese tour bus pamphlet in Nanjing area believed to be 400# from around year 1941: http://www.tt-museum.jp/tairiku_0280_nan1941.html , 401# the schedule listed was in the format of Japanese time. Which indicate some 402# use of the Japanese time (instead of syncing by DST) might have occurred in 403# the Yangtze river delta area during that period of time although the scope 404# of such use will need to be investigated to determine. 405# 406# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 407Rule Shang 1940 only - Jun 1 0:00 1:00 D 408Rule Shang 1940 only - Oct 12 24:00 0 S 409Rule Shang 1941 only - Mar 15 0:00 1:00 D 410Rule Shang 1941 only - Nov 1 24:00 0 S 411Rule Shang 1942 only - Jan 31 0:00 1:00 D 412Rule Shang 1945 only - Sep 1 24:00 0 S 413Rule Shang 1946 only - May 15 0:00 1:00 D 414Rule Shang 1946 only - Sep 30 24:00 0 S 415Rule Shang 1947 only - Apr 15 0:00 1:00 D 416Rule Shang 1947 only - Oct 31 24:00 0 S 417Rule Shang 1948 1949 - May 1 0:00 1:00 D 418Rule Shang 1948 1949 - Sep 30 24:00 0 S #plan 419 420# From Guy Harris: 421# People's Republic of China. Yes, they really have only one time zone. 422 423# From Bob Devine (1988-01-28): 424# No they don't. See TIME mag, 1986-02-17 p.52. Even though 425# China is across 4 physical time zones, before Feb 1, 1986 only the 426# Peking (Beijing) time zone was recognized. Since that date, China 427# has two of 'em - Peking's and Ürümqi (named after the capital of 428# the Xinjiang Uyghur Autonomous Region). I don't know about DST for it. 429# 430# . . .I just deleted the DST table and this editor makes it too 431# painful to suck in another copy. So, here is what I have for 432# DST start/end dates for Peking's time zone (info from AP): 433# 434# 1986 May 4 - Sept 14 435# 1987 mid-April - ?? 436 437# From U. S. Naval Observatory (1989-01-19): 438# CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN 439# CHINA 9 H AHEAD OF UTC APR 17 - SEP 10 440 441# From Paul Eggert (2008-02-11): 442# Jim Mann, "A clumsy embrace for another western custom: China on daylight 443# time - sort of", Los Angeles Times, 1986-05-05 ... [says] that China began 444# observing daylight saving time in 1986. 445 446# From P Chan (2018-05-07): 447# The start and end time of DST in China [from 1986 on] should be 2:00 448# (i.e. 2:00 to 3:00 at the start and 2:00 to 1:00 at the end).... 449# Government notices about summer time: 450# 451# 1986-04-12 http://www.zj.gov.cn/attach/zfgb/198608.pdf p.21-22 452# (To establish summer time from 1986. On 4 May, set the clocks ahead one hour 453# at 2 am. On 14 September, set the clocks backward one hour at 2 am.) 454# 455# 1987-02-15 http://www.gov.cn/gongbao/shuju/1987/gwyb198703.pdf p.114 456# (Summer time in 1987 to start from 12 April until 13 September) 457# 458# 1987-09-09 http://www.gov.cn/gongbao/shuju/1987/gwyb198721.pdf p.709 459# (From 1988, summer time to start from 2 am of the first Sunday of mid-April 460# until 2 am of the first Sunday of mid-September) 461# 462# 1992-03-03 http://www.gov.cn/gongbao/shuju/1992/gwyb199205.pdf p.152 463# (To suspend summer time from 1992) 464# 465# The first page of People's Daily on 12 April 1988 stating that summer time 466# to begin on 17 April. 467# http://data.people.com.cn/pic/101p/1988/04/1988041201.jpg 468 469# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 470Rule PRC 1986 only - May 4 2:00 1:00 D 471Rule PRC 1986 1991 - Sep Sun>=11 2:00 0 S 472Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D 473 474# From Anthony Fok (2001-12-20): 475# BTW, I did some research on-line and found some info regarding these five 476# historic timezones from some Taiwan websites. And yes, there are official 477# Chinese names for these locales (before 1949). 478# 479# From Jesper Nørgaard Welen (2006-07-14): 480# I have investigated the timezones around 1970 on the 481# https://www.astro.com/atlas site [with provinces and county 482# boundaries summarized below].... A few other exceptions were two 483# counties on the Sichuan side of the Xizang-Sichuan border, 484# counties Dege and Baiyu which lies on the Sichuan side and are 485# therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege 486# county is GMT+8 according to astro.com while Baiyu county is GMT+6 487# (could be true), for the moment I am assuming that those two 488# counties are mistakes in the astro.com data. 489 490# From Paul Eggert (2017-01-05): 491# Alois Treindl kindly sent me translations of the following two sources: 492# 493# (1) 494# Guo Qing-sheng (National Time-Service Center, CAS, Xi'an 710600, China) 495# Beijing Time at the Beginning of the PRC 496# China Historical Materials of Science and Technology 497# (Zhongguo ke ji shi liao, 中国科技史料). 2003;24(1):5-9. 498# http://oversea.cnki.net/kcms/detail/detail.aspx?filename=ZGKS200301000&dbname=CJFD2003 499# It gives evidence that at the beginning of the PRC, Beijing time was 500# officially apparent solar time! However, Guo also says that the 501# evidence is dubious, as the relevant institute of astronomy had not 502# been taken over by the PRC yet. It's plausible that apparent solar 503# time was announced but never implemented, and that people continued 504# to use UT+8. As the Shanghai radio station (and I presume the 505# observatory) was still under control of French missionaries, it 506# could well have ignored any such mandate. 507# 508# (2) 509# Guo Qing-sheng (Shaanxi Astronomical Observatory, CAS, Xi'an 710600, China) 510# A Study on the Standard Time Changes for the Past 100 Years in China 511# [undated and unknown publication location] 512# It says several things: 513# * The Qing dynasty used local apparent solar time throughout China. 514# * The Republic of China instituted Beijing mean solar time effective 515# the official calendar book of 1914. 516# * The French Concession in Shanghai set up signal stations in 517# French docks in the 1890s, controlled by Xujiahui (Zikawei) 518# Observatory and set to local mean time. 519# * "From the end of the 19th century" it changed to UT+8. 520# * Chinese Customs (by then reduced to a tool of foreign powers) 521# eventually standardized on this time for all ports, and it 522# became used by railways as well. 523# * In 1918 the Central Observatory proposed dividing China into 524# five time zones (see below for details). This caught on 525# at first only in coastal areas observing UT+8. 526# * During WWII all of China was in theory was at UT+7. In practice 527# this was ignored in the west, and I presume was ignored in 528# Japanese-occupied territory. 529# * Japanese-occupied Manchuria was at UT+9, i.e., Japan time. 530# * The five-zone plan was resurrected after WWII and officially put into 531# place (with some modifications) in March 1948. It's not clear 532# how well it was observed in areas under Nationalist control. 533# * The People's Liberation Army used UT+8 during the civil war. 534# 535# An AP article "Shanghai Internat'l Area Little Changed" in the 536# Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is 537# different - the occupied districts going by Tokyo time, an hour 538# ahead of that prevailing in the rest of Shanghai." Guess that the 539# Xujiahui Observatory was under French control and stuck with UT +08. 540# 541# In earlier versions of this file, China had many separate Zone entries, but 542# this was based on what were apparently incorrect data in Shanks & Pottenger. 543# This has now been simplified to the two entries Asia/Shanghai and 544# Asia/Urumqi, with the others being links for backward compatibility. 545# Proposed in 1918 and theoretically in effect until 1949 (although in practice 546# mainly observed in coastal areas), the five zones were: 547# 548# Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT +08:30 549# Now part of Asia/Shanghai; its pre-1970 times are not recorded here. 550# Heilongjiang (except Mohe county), Jilin 551# 552# Zhongyuan Time ("Central plain Time") UT +08 553# Now part of Asia/Shanghai. 554# most of China 555# Milne gives 8:05:43.2 for Xujiahui Observatory time.... 556# Guo says Shanghai switched to UT +08 "from the end of the 19th century". 557# 558# Long-shu Time (probably as Long and Shu were two names of the area) UT +07 559# Now part of Asia/Shanghai; its pre-1970 times are not recorded here. 560# Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan; 561# most of Gansu; west Inner Mongolia; east Qinghai; and the Guangdong 562# counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing, 563# Yangchun, Yangjiang, Yu'nan, and Yunfu. 564# 565# Xin-zang Time ("Xinjiang-Tibet Time") UT +06 566# This region is now part of either Asia/Urumqi or Asia/Shanghai with 567# current boundaries uncertain; times before 1970 for areas that 568# disagree with Ürümqi or Shanghai are not recorded here. 569# The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai; 570# the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang, 571# Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi; 572# east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi; 573# east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe, 574# Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin, 575# Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami, 576# Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan. 577# 578# Kunlun Time UT +05:30 579# This region is now in the same status as Xin-zang Time (see above). 580# West Tibet, including Pulan, Aheqi, Shufu, Shule; 581# West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke, 582# Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding, 583# and Yarkand. 584 585# From Luther Ma (2009-10-17): 586# Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in 587# Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time, 588# but have no need of it. All planes, trains, and schools function on 589# what is called "Beijing time." When Han make an appointment in Chinese 590# they implicitly use Beijing time. 591# 592# On the other hand, ethnic Uyghurs, who make up about half the 593# population of Xinjiang, typically use "Xinjiang time" which is two 594# hours behind Beijing time, or UT +06. The government of the Xinjiang 595# Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as 596# local governments such as the Ürümqi city government use both times in 597# publications, referring to what is popularly called Xinjiang time as 598# "Ürümqi time." When Uyghurs make an appointment in the Uyghur language 599# they almost invariably use Xinjiang time. 600# 601# (Their ethnic Han compatriots would typically have no clue of its 602# widespread use, however, because so extremely few of them are fluent in 603# Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.) 604# 605# (...As with the rest of China there was a brief interval ending in 1990 606# or 1991 when summer time was in use. The confusion was severe, with 607# the province not having dual times but four times in use at the same 608# time. Some areas remained on standard Xinjiang time or Beijing time and 609# others moving their clocks ahead.) 610 611# From Luther Ma (2009-11-19): 612# With the risk of being redundant to previous answers these are the most common 613# English "transliterations" (w/o using non-English symbols): 614# 615# 1. Wulumuqi... 616# 2. Kashi... 617# 3. Urumqi... 618# 4. Kashgar... 619# ... 620# 5. It seems that Uyghurs in Ürümqi has been using Xinjiang since at least the 621# 1960's. I know of one Han, now over 50, who grew up in the surrounding 622# countryside and used Xinjiang time as a child. 623# 624# 6. Likewise for Kashgar and the rest of south Xinjiang I don't know of any 625# start date for Xinjiang time. 626# 627# Without having access to local historical records, nor the ability to legally 628# publish them, I would go with October 1, 1949, when Xinjiang became the Uyghur 629# Autonomous Region under the PRC. (Before that Uyghurs, of course, would also 630# not be using Beijing time, but some local time.) 631 632# From David Cochrane (2014-03-26): 633# Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986: 634# https://content.time.com/time/magazine/article/0,9171,960684,00.html 635 636# From Luther Ma (2014-04-22): 637# I have interviewed numerous people of various nationalities and from 638# different localities in Xinjiang and can confirm the information in Guo's 639# report regarding Xinjiang, as well as the Time article reference by David 640# Cochrane. Whether officially recognized or not (and both are officially 641# recognized), two separate times have been in use in Xinjiang since at least 642# the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time; 643# and Beijing Time. There is no confusion in Xinjiang as to which name refers 644# to which time. Both are widely used in the province, although in some 645# population groups might be use one to the exclusion of the other. The only 646# problem is that computers and smart phones list Ürümqi (or Kashgar) as 647# having the same time as Beijing. 648 649# From Paul Eggert (2014-06-30): 650# In the early days of the PRC, Tibet was given its own time zone (UT +06) 651# but this was withdrawn in 1959 and never reinstated; see Tubten Khétsun, 652# Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN 653# 978-0231142861 (2008), translator's introduction by Matthew Akester, p x. 654# As this is before our 1970 cutoff, Tibet doesn't need a separate zone. 655# 656# Xinjiang Time is well-documented as being officially recognized. E.g., see 657# "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government" 658# <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22). 659# Unfortunately, we have no good records of time in Xinjiang before 1986. 660# During the 20th century parts of Xinjiang were ruled by the Qing dynasty, 661# the Republic of China, various warlords, the First and Second East Turkestan 662# Republics, the Soviet Union, the Kuomintang, and the People's Republic of 663# China, and tracking down all these organizations' timekeeping rules would be 664# quite a trick. Approximate this lost history by a transition from LMT to 665# UT +06 at the start of 1928, the year of accession of the warlord Jin Shuren, 666# which happens to be the date given by Shanks & Pottenger (no doubt as a 667# guess) as the transition from LMT. Ignore the usage of +08 before 668# 1986-02-01 under the theory that the transition date to +08 is unknown and 669# that the sort of users who prefer Asia/Urumqi now typically ignored the 670# +08 mandate back then. 671 672# Zone NAME STDOFF RULES FORMAT [UNTIL] 673# Beijing time, used throughout China; represented by Shanghai. 674 #STDOFF 8:05:43.2 675Zone Asia/Shanghai 8:05:43 - LMT 1901 676 8:00 Shang C%sT 1949 May 28 677 8:00 PRC C%sT 678# Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi 679# / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) 680Zone Asia/Urumqi 5:50:20 - LMT 1928 681 6:00 - +06 682 683# Hong Kong 684 685# Milne gives 7:36:41.7. 686 687# From Lee Yiu Chung (2009-10-24): 688# I found there are some mistakes for the...DST rule for Hong 689# Kong. [According] to the DST record from Hong Kong Observatory (actually, 690# it is not [an] observatory, but the official meteorological agency of HK, 691# and also serves as the official timing agency), there are some missing 692# and incorrect rules. Although the exact switch over time is missing, I 693# think 3:30 is correct. 694 695# From Phake Nick (2018-10-27): 696# According to Singaporean newspaper 697# http://eresources.nlb.gov.sg/newspapers/Digitised/Article/singfreepresswk19041102-1.2.37 698# the day that Hong Kong start using GMT+8 should be Oct 30, 1904. 699# 700# From Paul Eggert (2018-11-17): 701# Hong Kong had a time ball near the Marine Police Station, Tsim Sha Tsui. 702# "The ball was raised manually each day and dropped at exactly 1pm 703# (except on Sundays and Government holidays)." 704# Dyson AD. From Time Ball to Atomic Clock. Hong Kong Government. 1983. 705# <https://www.hko.gov.hk/publica/gen_pub/timeball_atomic_clock.pdf> 706# "From 1904 October 30 the time-ball at Hong Kong has been dropped by order 707# of the Governor of the Colony at 17h 0m 0s G.M.T., which is 23m 18s.14 in 708# advance of 1h 0m 0s of Hong Kong mean time." 709# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. 710# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 711# 712# From Joseph Myers (2018-11-18): 713# An astronomer before 1925 referring to GMT would have been using the old 714# astronomical convention where the day started at noon, not midnight. 715# 716# From Steve Allen (2018-11-17): 717# Meteorological Observations made at the Hongkong Observatory in the year 1904 718# page 4 <https://books.google.com/books?id=kgw5AQAAMAAJ&pg=RA4-PA4> 719# ... the log of drop times in Table II shows that on Sunday 1904-10-30 the 720# ball was dropped. So that looks like a special case drop for the sake 721# of broadcasting the new local time. 722# 723# From Phake Nick (2018-11-18): 724# According to The Hong Kong Weekly Press, 1904-10-29, p.324, the 725# governor of Hong Kong at the time stated that "We are further desired to 726# make it known that the change will be effected by firing the gun and by the 727# dropping of the Ball at 23min. 18sec. before one." 728# From Paul Eggert (2018-11-18): 729# See <https://mmis.hkpl.gov.hk> for this; unfortunately Flash is required. 730 731# From Phake Nick (2018-10-26): 732# I went to check microfilm records stored at Hong Kong Public Library.... 733# on September 30 1941, according to Ta Kung Pao (Hong Kong edition), it was 734# stated that fallback would occur on the next day (the 1st)'s "03:00 am (Hong 735# Kong Time 04:00 am)" and the clock will fall back for a half hour. (03:00 736# probably refer to the time commonly used in mainland China at the time given 737# the paper's background) ... the sunrise/sunset time given by South China 738# Morning Post for October 1st was indeed moved by half an hour compares to 739# before. After that, in December, the battle to capture Hong Kong started and 740# the library doesn't seems to have any record stored about press during that 741# period of time. Some media resumed publication soon after that within the 742# same month, but there were not much information about time there. Later they 743# started including a radio program guide when they restored radio service, 744# explicitly mentioning it use Tokyo standard time, and later added a note 745# saying it's half an hour ahead of the old Hong Kong standard time, and it 746# also seems to indicate that Hong Kong was not using GMT+8 when it was 747# captured by Japan. 748# 749# Image of related sections on newspaper: 750# * 1941-09-30, Ta Kung Pao (Hong Kong), "Winter Time start tomorrow". 751# https://i.imgur.com/6waY51Z.jpg (Chinese) 752# * 1941-09-29, South China Morning Post, Information on sunrise/sunset 753# time and other things for September 30 and October 1. 754# https://i.imgur.com/kCiUR78.jpg 755# * 1942-02-05. The Hong Kong News, Radio Program Guide. 756# https://i.imgur.com/eVvDMzS.jpg 757# * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow. 758# https://i.imgur.com/05KkvtC.png 759# * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. 760# https://i.imgur.com/dge4kFJ.png 761 762# From Paul Eggert (2019-07-11): 763# "Hong Kong winter time" is considered to be daylight saving. 764# "Hong Kong had adopted daylight saving on June 15 as a wartime measure, 765# clocks moving forward one hour until October 1, when they would be put back 766# by just half an hour for 'Hong Kong Winter time', so that daylight saving 767# operated year round." -- Low Z. The longest day: when wartime Hong Kong 768# introduced daylight saving. South China Morning Post. 2019-06-28. 769# https://www.scmp.com/magazines/post-magazine/short-reads/article/3016281/longest-day-when-wartime-hong-kong-introduced 770 771# From P Chan (2018-12-31): 772# * According to the Hong Kong Daylight-Saving Regulations, 1941, the 773# 1941 spring-forward transition was at 03:00. 774# http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf 775# http://sunzi.lib.hku.hk/hkgro/view/g1941/305516.pdf 776# * According to some articles from South China Morning Post, +08 was 777# resumed on 1945-11-18 at 02:00. 778# https://i.imgur.com/M2IsZ3c.png 779# https://i.imgur.com/iOPqrVo.png 780# https://i.imgur.com/fffcGDs.png 781# * Some newspapers ... said the 1946 spring-forward transition was on 782# 04-21 at 00:00. The Kung Sheung Evening News 1946-04-20 (Chinese) 783# https://i.imgur.com/ZSzent0.png 784# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2FH7zGe%2FKF%2BFLYsuqGhRBfe p.4 785# The Kung Sheung Daily News 1946-04-21 (Chinese) 786# https://i.imgur.com/7ecmRlcm.png 787# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2BQBGt1%2BwUj5qG2GqtwR3Wh p.4 788# * According to the Summer Time Ordinance (1946), the fallback 789# transitions between 1946 and 1952 were at 03:30 Standard Time (+08) 790# http://oelawhk.lib.hku.hk/archive/files/bb74b06a74d5294620a15de560ab33c6.pdf 791# * Some other laws and regulations related to DST from 1953 to 1979 792# Summer Time Ordinance 1953 793# https://i.imgur.com/IOlJMav.jpg 794# Summer Time (Amendment) Ordinance 1965 795# https://i.imgur.com/8rofeLa.jpg 796# Interpretation and General Clauses Ordinance (1966) 797# https://i.imgur.com/joy3msj.jpg 798# Emergency (Summer Time) Regulation 1973 <https://i.imgur.com/OpRWrKz.jpg> 799# Interpretation and General Clauses (Amendment) Ordinance 1977 800# https://i.imgur.com/RaNqnc4.jpg 801# Resolution of the Legislative Council passed on 9 May 1979 802# https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39 803 804# From Paul Eggert (2020-04-15): 805# Here are the dates given at 806# https://www.hko.gov.hk/en/gts/time/Summertime.htm 807# as of 2020-02-10: 808# Year Period 809# 1941 15 Jun to 30 Sep 810# 1942 Whole year 811# 1943 Whole year 812# 1944 Whole year 813# 1945 Whole year 814# 1946 20 Apr to 1 Dec 815# 1947 13 Apr to 30 Nov 816# 1948 2 May to 31 Oct 817# 1949 3 Apr to 30 Oct 818# 1950 2 Apr to 29 Oct 819# 1951 1 Apr to 28 Oct 820# 1952 6 Apr to 2 Nov 821# 1953 5 Apr to 1 Nov 822# 1954 21 Mar to 31 Oct 823# 1955 20 Mar to 6 Nov 824# 1956 18 Mar to 4 Nov 825# 1957 24 Mar to 3 Nov 826# 1958 23 Mar to 2 Nov 827# 1959 22 Mar to 1 Nov 828# 1960 20 Mar to 6 Nov 829# 1961 19 Mar to 5 Nov 830# 1962 18 Mar to 4 Nov 831# 1963 24 Mar to 3 Nov 832# 1964 22 Mar to 1 Nov 833# 1965 18 Apr to 17 Oct 834# 1966 17 Apr to 16 Oct 835# 1967 16 Apr to 22 Oct 836# 1968 21 Apr to 20 Oct 837# 1969 20 Apr to 19 Oct 838# 1970 19 Apr to 18 Oct 839# 1971 18 Apr to 17 Oct 840# 1972 16 Apr to 22 Oct 841# 1973 22 Apr to 21 Oct 842# 1973/74 30 Dec 73 to 20 Oct 74 843# 1975 20 Apr to 19 Oct 844# 1976 18 Apr to 17 Oct 845# 1977 Nil 846# 1978 Nil 847# 1979 13 May to 21 Oct 848# 1980 to Now Nil 849# The page does not give times of day for transitions, 850# or dates for the 1942 and 1945 transitions. 851# The Japanese occupation of Hong Kong began 1941-12-25. 852 853# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 854Rule HK 1946 only - Apr 21 0:00 1:00 S 855Rule HK 1946 only - Dec 1 3:30s 0 - 856Rule HK 1947 only - Apr 13 3:30s 1:00 S 857Rule HK 1947 only - Nov 30 3:30s 0 - 858Rule HK 1948 only - May 2 3:30s 1:00 S 859Rule HK 1948 1952 - Oct Sun>=28 3:30s 0 - 860Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S 861Rule HK 1953 1964 - Oct Sun>=31 3:30 0 - 862Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S 863Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S 864Rule HK 1965 1976 - Oct Sun>=16 3:30 0 - 865Rule HK 1973 only - Dec 30 3:30 1:00 S 866Rule HK 1979 only - May 13 3:30 1:00 S 867Rule HK 1979 only - Oct 21 3:30 0 - 868# Zone NAME STDOFF RULES FORMAT [UNTIL] 869 #STDOFF 7:36:41.7 870Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 29 17:00u 871 8:00 - HKT 1941 Jun 15 3:00 872 8:00 1:00 HKST 1941 Oct 1 4:00 873 8:00 0:30 HKWT 1941 Dec 25 874 9:00 - JST 1945 Nov 18 2:00 875 8:00 HK HK%sT 876 877############################################################################### 878 879# Taiwan 880 881# From smallufo (2010-04-03): 882# According to Taiwan's CWB [Central Weather Bureau], 883# http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm 884# Taipei has DST in 1979 between July 1st and Sep 30. 885 886# From Yu-Cheng Chuang (2013-07-12): 887# On Dec 28, 1895, the Meiji Emperor announced Ordinance No. 167 of 888# Meiji Year 28 "The clause about standard time", mentioned that 889# Taiwan and Penghu Islands, as well as Yaeyama and Miyako Islands 890# (both in Okinawa) adopt the Western Standard Time which is based on 891# 120E. The adoption began from Jan 1, 1896. The original text can be 892# found on Wikisource: 893# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) 894# ... This could be the first adoption of time zone in Taiwan, because 895# during the Qing Dynasty, it seems that there was no time zone 896# declared officially. 897# 898# Later, in the beginning of World War II, on Sep 25, 1937, the Showa 899# Emperor announced Ordinance No. 529 of Showa Year 12 "The clause of 900# revision in the ordinance No. 167 of Meiji year 28 about standard 901# time", in which abolished the adoption of Western Standard Time in 902# western islands (listed above), which means the whole Japan 903# territory, including later occupations, adopt Japan Central Time 904# (UT+9). The adoption began on Oct 1, 1937. The original text can 905# be found on Wikisource: 906# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 907# 908# That is, the time zone of Taipei switched to UT+9 on Oct 1, 1937. 909 910# From Yu-Cheng Chuang (2014-07-02): 911# I've found more evidence about when the time zone was switched from UT+9 912# back to UT+8 after WW2. I believe it was on Sep 21, 1945. In a document 913# during Japanese era [1] in which the officer told the staff to change time 914# zone back to Western Standard Time (UT+8) on Sep 21. And in another 915# history page of National Cheng Kung University [2], on Sep 21 there is a 916# note "from today, switch back to Western Standard Time". From these two 917# materials, I believe that the time zone change happened on Sep 21. And 918# today I have found another monthly journal called "The Astronomical Herald" 919# from The Astronomical Society of Japan [3] in which it mentioned the fact 920# that: 921# 922# 1. Standard Time of the Country (Japan) was adopted on Jan 1, 1888, using 923# the time at 135E (GMT+9) 924# 925# 2. Standard Time of the Country was renamed to Central Standard Time, on Jan 926# 1, 1898, and on the same day, the new territories Taiwan and Penghu islands, 927# as well as Yaeyama and Miyako islands, adopted a new time zone called 928# Western Standard Time, which is in GMT+8. 929# 930# 3. Western Standard Time was deprecated on Sep 30, 1937. From then all the 931# territories of Japan adopted the same time zone, which is Central Standard 932# Time. 933# 934# [1] Academica Historica, Taiwan: 935# http://163.29.208.22:8080/govsaleShowImage/connect_img.php?s=00101738900090036&e=00101738900090037 936# [2] Nat'l Cheng Kung University 70th Anniversary Special Site: 937# http://www.ncku.edu.tw/~ncku70/menu/001/01_01.htm 938# [3] Yukio Niimi, The Standard Time in Japan (1997), p.475: 939# http://www.asj.or.jp/geppou/archive_open/1997/pdf/19971001c.pdf 940 941# Yu-Cheng Chuang (2014-07-03): 942# I finally have found the real official gazette about changing back to 943# Western Standard Time on Sep 21 in Taiwan. It's Taiwan Governor-General 944# Bulletin No. 386 in Showa 20 years (1945), published on Sep 19, 1945. [1] ... 945# [It] abolishes Bulletin No. 207 in Showa 12 years (1937), which is a local 946# bulletin in Taiwan for that Ordinance No. 529. It also mentioned that 1am on 947# Sep 21, 1945 will be 12am on Sep 21. I think this bulletin is much more 948# official than the one I mentioned in my first mail, because it's from the 949# top-level government in Taiwan. If you're going to quote any resource, this 950# would be a good one. 951# [1] Taiwan Governor-General Gazette, No. 1018, Sep 19, 1945: 952# http://db2.th.gov.tw/db2/view/viewImg.php?imgcode=0072031018a&num=19&bgn=019&end=019&otherImg=&type=gener 953 954# From Yu-Cheng Chuang (2014-07-02): 955# In 1946, DST in Taiwan was from May 15 and ended on Sep 30. The info from 956# Central Weather Bureau website was not correct. 957# 958# Original Bulletin: 959# http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF 960# http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.) 961# 962# In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that 963# telegram announcement from Taiwan Province Government: 964# 965# http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431 966# 967# Here is a brief translation: 968# 969# The Summer Time this year is adopted from midnight Apr 15 until Sep 20 970# midnight. To save (energy?) consumption, we're expanding Summer Time 971# adoption till Oct 31 midnight. 972# 973# The Central Weather Bureau website didn't mention that, however it can 974# be found from historical government announcement database. 975 976# From Paul Eggert (2014-07-03): 977# As per Yu-Cheng Chuang, say that Taiwan was at UT +09 from 1937-10-01 978# until 1945-09-21 at 01:00, overriding Shanks & Pottenger. 979# Likewise, use Yu-Cheng Chuang's data for DST in Taiwan. 980 981# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 982Rule Taiwan 1946 only - May 15 0:00 1:00 D 983Rule Taiwan 1946 only - Oct 1 0:00 0 S 984Rule Taiwan 1947 only - Apr 15 0:00 1:00 D 985Rule Taiwan 1947 only - Nov 1 0:00 0 S 986Rule Taiwan 1948 1951 - May 1 0:00 1:00 D 987Rule Taiwan 1948 1951 - Oct 1 0:00 0 S 988Rule Taiwan 1952 only - Mar 1 0:00 1:00 D 989Rule Taiwan 1952 1954 - Nov 1 0:00 0 S 990Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D 991Rule Taiwan 1955 1961 - Oct 1 0:00 0 S 992Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D 993Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D 994Rule Taiwan 1974 1975 - Oct 1 0:00 0 S 995Rule Taiwan 1979 only - Jul 1 0:00 1:00 D 996Rule Taiwan 1979 only - Oct 1 0:00 0 S 997 998# Zone NAME STDOFF RULES FORMAT [UNTIL] 999# Taipei or Taibei or T'ai-pei 1000Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1 1001 8:00 - CST 1937 Oct 1 1002 9:00 - JST 1945 Sep 21 1:00 1003 8:00 Taiwan C%sT 1004 1005# Macau (Macao, Aomen) 1006# 1007# From P Chan (2018-05-10): 1008# * LegisMac 1009# http://legismac.safp.gov.mo/legismac/descqry/Descqry.jsf?lang=pt 1010# A database for searching titles of legal documents of Macau in 1011# Chinese and Portuguese. The term "HORÁRIO DE VERÃO" can be used for 1012# searching decrees about summer time. 1013# * Archives of Macao 1014# http://www.archives.gov.mo/en/bo/ 1015# It contains images of old official gazettes. 1016# * The Macao Meteorological and Geophysical Bureau have a page listing the 1017# summer time history. But it is not complete and has some mistakes. 1018# http://www.smg.gov.mo/smg/geophysics/e_t_Summer%20Time.htm 1019# Macau adopted GMT+8 on 30 Oct 1904 to follow Hong Kong. Clocks were 1020# advanced by 25 minutes and 50 seconds. Which means the LMT used was 1021# +7:34:10. As stated in the "Portaria No. 204" dated 21 October 1904 1022# and published in the Official Gazette on 29 October 1904. 1023# http://igallery.icm.gov.mo/Images/Archives/BO/MO_AH_PUB_BO_1904_10/MO_AH_PUB_BO_1904_10_00025_Grey.JPG 1024# 1025# Therefore the 1911 decree of Portugal did not change time in Macau. 1026# 1027# From LegisMac, here is a list of decrees that changed the time ... 1028# [Decree Gazette-no. date; titles omitted in this quotation] 1029# DIL 732 BOCM 51 1941.12.20 1030# DIL 764 BOCM 9S 1942.04.30 1031# DIL 781 BOCM 21 1942.10.10 1032# PT 3434 BOCM 8S 1943.04.17 1033# PT 3504 BOCM 20 1943.09.25 1034# PT 3843 BOCM 39 1945.09.29 1035# PT 3961 BOCM 17 1946.04.27 1036# PT 4026 BOCM 39 1946.09.28 1037# PT 4153 BOCM 16 1947.04.10 1038# PT 4271 BOCM 48 1947.11.29 1039# PT 4374 BOCM 18 1948.05.01 1040# PT 4465 BOCM 44 1948.10.30 1041# PT 4590 BOCM 14 1949.04.02 1042# PT 4666 BOCM 44 1949.10.29 1043# PT 4771 BOCM 12 1950.03.25 1044# PT 4838 BOCM 43 1950.10.28 1045# PT 4946 BOCM 12 1951.03.24 1046# PT 5025 BO 43 1951.10.27 1047# PT 5149 BO 14 1952.04.05 1048# PT 5251 BO 43 1952.10.25 1049# PT 5366 BO 13 1953.03.28 1050# PT 5444 BO 44 1953.10.31 1051# PT 5540 BO 12 1954.03.20 1052# PT 5589 BO 44 1954.10.30 1053# PT 5676 BO 12 1955.03.19 1054# PT 5739 BO 45 1955.11.05 1055# PT 5823 BO 11 1956.03.17 1056# PT 5891 BO 44 1956.11.03 1057# PT 5981 BO 12 1957.03.23 1058# PT 6064 BO 43 1957.10.26 1059# PT 6172 BO 12 1958.03.22 1060# PT 6243 BO 43 1958.10.25 1061# PT 6341 BO 12 1959.03.21 1062# PT 6411 BO 43 1959.10.24 1063# PT 6514 BO 11 1960.03.12 1064# PT 6584 BO 44 1960.10.29 1065# PT 6721 BO 10 1961.03.11 1066# PT 6815 BO 43 1961.10.28 1067# PT 6947 BO 10 1962.03.10 1068# PT 7080 BO 43 1962.10.27 1069# PT 7218 BO 12 1963.03.23 1070# PT 7340 BO 43 1963.10.26 1071# PT 7491 BO 11 1964.03.14 1072# PT 7664 BO 43 1964.10.24 1073# PT 7846 BO 15 1965.04.10 1074# PT 7979 BO 42 1965.10.16 1075# PT 8146 BO 15 1966.04.09 1076# PT 8252 BO 41 1966.10.08 1077# PT 8429 BO 15 1967.04.15 1078# PT 8540 BO 41 1967.10.14 1079# PT 8735 BO 15 1968.04.13 1080# PT 8860 BO 41 1968.10.12 1081# PT 9035 BO 16 1969.04.19 1082# PT 9156 BO 42 1969.10.18 1083# PT 9328 BO 15 1970.04.11 1084# PT 9418 BO 41 1970.10.10 1085# PT 9587 BO 14 1971.04.03 1086# PT 9702 BO 41 1971.10.09 1087# PT 38-A/72 BO 14 1972.04.01 1088# PT 126-A/72 BO 41 1972.10.07 1089# PT 61/73 BO 14 1973.04.07 1090# PT 182/73 BO 40 1973.10.06 1091# PT 282/73 BO 51 1973.12.22 1092# PT 177/74 BO 41 1974.10.12 1093# PT 51/75 BO 15 1975.04.12 1094# PT 173/75 BO 41 1975.10.11 1095# PT 67/76/M BO 14 1976.04.03 1096# PT 169/76/M BO 41 1976.10.09 1097# PT 78/79/M BO 19 1979.05.12 1098# PT 166/79/M BO 42 1979.10.20 1099# Note that DIL 732 does not belong to "HORÁRIO DE VERÃO" according to 1100# LegisMac.... Note that between 1942 and 1945, the time switched 1101# between GMT+9 and GMT+10. Also in 1965 and 1965 the DST ended at 2:30am. 1102 1103# From Paul Eggert (2018-05-10): 1104# The 1904 decree says that Macau changed from the meridian of 1105# Fortaleza do Monte, presumably the basis for the 7:34:10 for LMT. 1106 1107# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1108Rule Macau 1942 1943 - Apr 30 23:00 1:00 - 1109Rule Macau 1942 only - Nov 17 23:00 0 - 1110Rule Macau 1943 only - Sep 30 23:00 0 S 1111Rule Macau 1946 only - Apr 30 23:00s 1:00 D 1112Rule Macau 1946 only - Sep 30 23:00s 0 S 1113Rule Macau 1947 only - Apr 19 23:00s 1:00 D 1114Rule Macau 1947 only - Nov 30 23:00s 0 S 1115Rule Macau 1948 only - May 2 23:00s 1:00 D 1116Rule Macau 1948 only - Oct 31 23:00s 0 S 1117Rule Macau 1949 1950 - Apr Sat>=1 23:00s 1:00 D 1118Rule Macau 1949 1950 - Oct lastSat 23:00s 0 S 1119Rule Macau 1951 only - Mar 31 23:00s 1:00 D 1120Rule Macau 1951 only - Oct 28 23:00s 0 S 1121Rule Macau 1952 1953 - Apr Sat>=1 23:00s 1:00 D 1122Rule Macau 1952 only - Nov 1 23:00s 0 S 1123Rule Macau 1953 1954 - Oct lastSat 23:00s 0 S 1124Rule Macau 1954 1956 - Mar Sat>=17 23:00s 1:00 D 1125Rule Macau 1955 only - Nov 5 23:00s 0 S 1126Rule Macau 1956 1964 - Nov Sun>=1 03:30 0 S 1127Rule Macau 1957 1964 - Mar Sun>=18 03:30 1:00 D 1128Rule Macau 1965 1973 - Apr Sun>=16 03:30 1:00 D 1129Rule Macau 1965 1966 - Oct Sun>=16 02:30 0 S 1130Rule Macau 1967 1976 - Oct Sun>=16 03:30 0 S 1131Rule Macau 1973 only - Dec 30 03:30 1:00 D 1132Rule Macau 1975 1976 - Apr Sun>=16 03:30 1:00 D 1133Rule Macau 1979 only - May 13 03:30 1:00 D 1134Rule Macau 1979 only - Oct Sun>=16 03:30 0 S 1135 1136# Zone NAME STDOFF RULES FORMAT [UNTIL] 1137Zone Asia/Macau 7:34:10 - LMT 1904 Oct 30 1138 8:00 - CST 1941 Dec 21 23:00 1139 9:00 Macau +09/+10 1945 Sep 30 24:00 1140 8:00 Macau C%sT 1141 1142 1143############################################################################### 1144 1145# Cyprus 1146 1147# Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT. 1148# IATA SSIM (1998-09) has Cyprus using EU rules for the first time. 1149 1150# From Paul Eggert (2016-09-09): 1151# Yesterday's Cyprus Mail reports that Northern Cyprus followed Turkey's 1152# lead and switched from +02/+03 to +03 year-round. 1153# http://cyprus-mail.com/2016/09/08/two-time-zones-cyprus-turkey-will-not-turn-clocks-back-next-month/ 1154# 1155# From Even Scharning (2016-10-31): 1156# Looks like the time zone split in Cyprus went through last night. 1157# http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/ 1158 1159# From Paul Eggert (2017-10-18): 1160# Northern Cyprus will reinstate winter time on October 29, thus 1161# staying in sync with the rest of Cyprus. See: Anastasiou A. 1162# Cyprus to remain united in time. Cyprus Mail 2017-10-17. 1163# https://cyprus-mail.com/2017/10/17/cyprus-remain-united-time/ 1164 1165# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1166Rule Cyprus 1975 only - Apr 13 0:00 1:00 S 1167Rule Cyprus 1975 only - Oct 12 0:00 0 - 1168Rule Cyprus 1976 only - May 15 0:00 1:00 S 1169Rule Cyprus 1976 only - Oct 11 0:00 0 - 1170Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S 1171Rule Cyprus 1977 only - Sep 25 0:00 0 - 1172Rule Cyprus 1978 only - Oct 2 0:00 0 - 1173Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 - 1174Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S 1175# Zone NAME STDOFF RULES FORMAT [UNTIL] 1176Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14 1177 2:00 Cyprus EE%sT 1998 Sep 1178 2:00 EUAsia EE%sT 1179Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14 1180 2:00 Cyprus EE%sT 1998 Sep 1181 2:00 EUAsia EE%sT 2016 Sep 8 1182 3:00 - +03 2017 Oct 29 1:00u 1183 2:00 EUAsia EE%sT 1184 1185# Georgia 1186# From Paul Eggert (1994-11-19): 1187# Today's _Economist_ (p 60) reports that Georgia moved its clocks forward 1188# an hour recently, due to a law proposed by Zurab Murvanidze, 1189# an MP who went on a hunger strike for 11 days to force discussion about it! 1190# We have no details, but we'll guess they didn't move the clocks back in fall. 1191# 1192# From Mathew Englander, quoting AP (1996-10-23 13:05-04): 1193# Instead of putting back clocks at the end of October, Georgia 1194# will stay on daylight savings time this winter to save energy, 1195# President Eduard Shevardnadze decreed Wednesday. 1196# 1197# From the BBC via Joseph S. Myers (2004-06-27): 1198# 1199# Georgia moved closer to Western Europe on Sunday... The former Soviet 1200# republic has changed its time zone back to that of Moscow. As a result it 1201# is now just four hours ahead of Greenwich Mean Time, rather than five hours 1202# ahead. The switch was decreed by the pro-Western president of Georgia, 1203# Mikheil Saakashvili, who said the change was partly prompted by the process 1204# of integration into Europe. 1205 1206# From Teimuraz Abashidze (2005-11-07): 1207# Government of Georgia ... decided to NOT CHANGE daylight savings time on 1208# [Oct.] 30, as it was done before during last more than 10 years. 1209# Currently, we are in fact GMT +4:00, as before 30 October it was GMT 1210# +3:00.... The problem is, there is NO FORMAL LAW or governmental document 1211# about it. As far as I can find, I was told, that there is no document, 1212# because we just DIDN'T ISSUE document about switching to winter time.... 1213# I don't know what can be done, especially knowing that some years ago our 1214# DST rules where changed THREE TIMES during one month. 1215 1216# Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7. 1217# Byalokoz 1919 says Georgia was 2:59:11. 1218# Go with Byalokoz. 1219 1220# Zone NAME STDOFF RULES FORMAT [UNTIL] 1221Zone Asia/Tbilisi 2:59:11 - LMT 1880 1222 2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time 1223 3:00 - +03 1957 Mar 1224 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 1225 3:00 RussiaAsia +03/+04 1992 1226 3:00 E-EurAsia +03/+04 1994 Sep lastSun 1227 4:00 E-EurAsia +04/+05 1996 Oct lastSun 1228 4:00 1:00 +05 1997 Mar lastSun 1229 4:00 E-EurAsia +04/+05 2004 Jun 27 1230 3:00 RussiaAsia +03/+04 2005 Mar lastSun 2:00 1231 4:00 - +04 1232 1233# East Timor 1234 1235# See Indonesia for the 1945 transition. 1236 1237# From João Carrascalão, brother of the former governor of East Timor, in 1238# East Timor may be late for its millennium 1239# <https://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31): 1240# Portugal tried to change the time forward in 1974 because the sun 1241# rises too early but the suggestion raised a lot of problems with the 1242# Timorese and I still don't think it would work today because it 1243# conflicts with their way of life. 1244 1245# From Paul Eggert (2000-12-04): 1246# We don't have any record of the above attempt. 1247# Most likely our records are incomplete, but we have no better data. 1248 1249# From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General 1250# http://www.hri.org/news/world/undh/2000/00-08-16.undh.html 1251# (2000-08-16): 1252# The Cabinet of the East Timor Transition Administration decided 1253# today to advance East Timor's time by one hour. The time change, 1254# which will be permanent, with no seasonal adjustment, will happen at 1255# midnight on Saturday, September 16. 1256 1257# Zone NAME STDOFF RULES FORMAT [UNTIL] 1258Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 1259 8:00 - +08 1942 Feb 21 23:00 1260 9:00 - +09 1976 May 3 1261 8:00 - +08 2000 Sep 17 0:00 1262 9:00 - +09 1263 1264# India 1265 1266# British astronomer Henry Park Hollis disliked India Standard Time's offset: 1267# "A new time system has been proposed for India, Further India, and Burmah. 1268# The scheme suggested is that the times of the meridians 5½ and 6½ hours 1269# east of Greenwich should be adopted in these territories. No reason is 1270# given why hourly meridians five hours and six hours east should not be 1271# chosen; a plan which would bring the time of India into harmony with 1272# that of almost the whole of the civilised world." 1273# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. 1274# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 1275 1276# From Ian P. Beacock, in "A brief history of (modern) time", The Atlantic 1277# https://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/ 1278# (2015-12-22): 1279# In January 1906, several thousand cotton-mill workers rioted on the 1280# outskirts of Bombay.... They were protesting the proposed abolition of 1281# local time in favor of Indian Standard Time.... Journalists called this 1282# dispute the "Battle of the Clocks." It lasted nearly half a century. 1283 1284# From Paul Eggert (2017-04-20): 1285# Good luck trying to nail down old timekeeping records in India. 1286# "... in the nineteenth century ... Madras Observatory took its magnetic 1287# measurements on Göttingen time, its meteorological measurements on Madras 1288# (local) time, dropped its time ball on Greenwich (ocean navigator's) time, 1289# and distributed civil (local time)." -- Bartky IR. Selling the true time: 1290# 19th-century timekeeping in america. Stanford U Press (2000), 247 note 19. 1291# "A more potent cause of resistance to the general adoption of the present 1292# standard time lies in the fact that it is Madras time. The citizen of 1293# Bombay, proud of being 'primus in Indis' and of Calcutta, equally proud of 1294# his city being the Capital of India, and - for a part of the year - the Seat 1295# of the Supreme Government, alike look down on Madras, and refuse to change 1296# the time they are using, for that of what they regard as a benighted 1297# Presidency; while Madras, having for long given the standard time to the 1298# rest of India, would resist the adoption of any other Indian standard in its 1299# place." -- Oldham RD. On Time in India: a suggestion for its improvement. 1300# Proceedings of the Asiatic Society of Bengal (April 1899), 49-55. 1301# 1302# "In 1870 ... Madras time - 'now used by the telegraph and regulated from the 1303# only government observatory' - was suggested as a standard railway time, 1304# first to be adopted on the Great Indian Peninsular Railway (GIPR).... 1305# Calcutta, Bombay, and Karachi, were to be allowed to continue with their 1306# local time for civil purposes." - Prasad R. Tracks of Change: Railways and 1307# Everyday Life in Colonial India. Cambridge University Press (2016), 145. 1308# 1309# Reed S, Low F. The Indian Year Book 1936-37. Bennett, Coleman, pp 27-8. 1310# https://archive.org/details/in.ernet.dli.2015.282212 1311# This lists +052110 as Madras local time used in railways, and says that on 1312# 1906-01-01 railways and telegraphs in India switched to +0530. Some 1313# municipalities retained their former time, and the time in Calcutta 1314# continued to depend on whether you were at the railway station or at 1315# government offices. Government time was at +055320 (according to Shanks) or 1316# at +0554 (according to the Indian Year Book). Railway time is more 1317# appropriate for our purposes, as it was better documented, it is what we do 1318# elsewhere (e.g., Europe/London before 1880), and after 1906 it was 1319# consistent in the region now identified by Asia/Kolkata. So, use railway 1320# time for 1870-1941. Shanks is our only (and dubious) source for the 1321# 1941-1945 data. 1322 1323# Zone NAME STDOFF RULES FORMAT [UNTIL] 1324Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata 1325 5:53:20 - HMT 1870 # Howrah Mean Time? 1326 5:21:10 - MMT 1906 Jan 1 # Madras local time 1327 5:30 - IST 1941 Oct 1328 5:30 1:00 +0630 1942 May 15 1329 5:30 - IST 1942 Sep 1330 5:30 1:00 +0630 1945 Oct 15 1331 5:30 - IST 1332# Since 1970 the following are like Asia/Kolkata: 1333# Andaman Is 1334# Lakshadweep (Laccadive, Minicoy and Amindivi Is) 1335# Nicobar Is 1336 1337# Indonesia 1338# 1339# From Paul Eggert (2014-09-06): 1340# The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia 1341# civil time was 7:07:12.5. 1342# 1343# From Gwillim Law (2001-05-28), overriding Shanks & Pottenger: 1344# http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime 1345# says that Indonesia's time zones changed on 1988-01-01. Looking at some 1346# time zone maps, I think that must refer to Western Borneo (Kalimantan Barat 1347# and Kalimantan Tengah) switching from UTC+8 to UTC+7. 1348# 1349# From Paul Eggert (2007-03-10): 1350# Here is another correction to Shanks & Pottenger. 1351# JohnTWB writes that Japanese forces did not surrender control in 1352# Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and 1353# other formal surrender ceremonies were September 9, 11, and 13, plus 1354# September 12 for the regional surrender to Mountbatten in Singapore. 1355# These would be the earliest possible times for a change. 1356# Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions 1357# Traditionnelles, 1987, Paris) says that Java and Madura switched 1358# from UT +09 to +07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura 1359# (Hollandia). For now, assume all Indonesian locations other than Jayapura 1360# switched on 1945-09-23. 1361# 1362# From Paul Eggert (2013-08-11): 1363# Normally the tz database uses English-language abbreviations, but in 1364# Indonesia it's typical to use Indonesian-language abbreviations even 1365# when writing in English. For example, see the English-language 1366# summary published by the Time and Frequency Laboratory of the 1367# Research Center for Calibration, Instrumentation and Metrology, 1368# Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29). 1369# The time zone abbreviations and UT offsets are: 1370# 1371# WIB - +07 - Waktu Indonesia Barat (Indonesia western time) 1372# WITA - +08 - Waktu Indonesia Tengah (Indonesia central time) 1373# WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time) 1374# 1375# Zone NAME STDOFF RULES FORMAT [UNTIL] 1376# Java, Sumatra 1377 #STDOFF 7:07:12.5 1378Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10 1379# Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, 1380# but this must be a typo. 1381 7:07:12 - BMT 1923 Dec 31 16:40u # Batavia 1382 7:20 - +0720 1932 Nov 1383 7:30 - +0730 1942 Mar 23 1384 9:00 - +09 1945 Sep 23 1385 7:30 - +0730 1948 May 1386 8:00 - +08 1950 May 1387 7:30 - +0730 1964 1388 7:00 - WIB 1389# west and central Borneo 1390Zone Asia/Pontianak 7:17:20 - LMT 1908 May 1391 7:17:20 - PMT 1932 Nov # Pontianak MT 1392 7:30 - +0730 1942 Jan 29 1393 9:00 - +09 1945 Sep 23 1394 7:30 - +0730 1948 May 1395 8:00 - +08 1950 May 1396 7:30 - +0730 1964 1397 8:00 - WITA 1988 Jan 1 1398 7:00 - WIB 1399# Sulawesi, Lesser Sundas, east and south Borneo 1400Zone Asia/Makassar 7:57:36 - LMT 1920 1401 7:57:36 - MMT 1932 Nov # Macassar MT 1402 8:00 - +08 1942 Feb 9 1403 9:00 - +09 1945 Sep 23 1404 8:00 - WITA 1405# Maluku Islands, West Papua, Papua 1406Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov 1407 9:00 - +09 1944 Sep 1 1408 9:30 - +0930 1964 1409 9:00 - WIT 1410 1411# Iran 1412 1413# From Roozbeh Pournader (2022-05-30): 1414# Here's an order from the Cabinet to the rest of the government to switch to 1415# Tehran time, which is mentioned to be already at +03:30: 1416# https://qavanin.ir/Law/TreeText/180138 1417# Just in case that goes away, I also saved a copy at archive.org: 1418# https://web.archive.org/web/20220530111940/https://qavanin.ir/Law/TreeText/180138 1419# Here's my translation: 1420# 1421# "Circular on Matching the Hours of Governmental and Official Circles 1422# in Provinces 1423# Approved 1314/03/22 [=1935-06-13] 1424# According to the ruling of the Honorable Cabinet, it is ordered that from 1425# now on in all internal provinces of the country, governmental and official 1426# circles set their time to match Tehran time (three hours and half before 1427# Greenwich).... 1428# 1429# I still haven't found out when Tehran itself switched to +03:30.... 1430# 1431# From Paul Eggert (2022-06-05): 1432# Although the above says Tehran was at +03:30 before 1935-06-13, we don't 1433# know when it switched to +03:30. For now, use 1935-06-13 as the switch date. 1434# Although most likely wrong, we have no better info. 1435 1436# From Roozbeh Pournader (2022-06-01): 1437# This is from Kayhan newspaper, one of the major Iranian newspapers, from 1438# March 20, 1978, page 2: 1439# 1440# "Pull the clocks 60 minutes forward 1441# As we informed before, from the fourth day of the month Farvardin of the 1442# new year [=1978-03-24], clocks will be pulled forward, and people's daily 1443# work and life program will start one hour earlier than the current program. 1444# On the 1st day of the month Farvardin of this year [=1977-03-21], they had 1445# pulled the clocks forward by one hour, but in the month of Mehr 1446# [=1977-09-23], the clocks were pulled back by 30 minutes. 1447# In this way, from the 4th day of the month Farvardin, clocks will be ahead 1448# of the previous years by one hour and a half. 1449# According to the new program, during the night of 4th of Farvardin, when 1450# the midnight, meaning 24 o'clock is announced, the hands of the clock must 1451# be pulled forward by one hour and thus consider midnight 1 o'clock in the 1452# forenoon." 1453# 1454# This implies that in September 1977, when the daylight savings time was 1455# done with, Iran didn't go back to +03:30, but immediately to +04:00. 1456# 1457# 1458# This is from the major Iranian newspaper Ettela'at, dated [1978-08-03]..., 1459# page 32. It looks like they decided to get the clocks back to +4:00 1460# just in time for Ramadan that year: 1461# 1462# "Tomorrow Night, Pull the Clocks Back by One Hour 1463# At 1 o'clock in the forenoon of Saturday 14 Mordad [=1978-08-05], the 1464# clocks will be pulled one hour back and instead of 1 o'clock in the 1465# forenoon, Radio Iran will announce 24 o'clock. 1466# This decision was made in the Cabinet of Ministers meeting of 25 Tir 1467# [=1978-07-16], [...] 1468# At the beginning of the year 2537 [=March 1978: Iran was using a different 1469# year number for a few years then, based on the Coronation of Cyrus the 1470# Great], the country's official time was pulled forward by one hour and now 1471# the official time is one hour and a half ahead compared to last year, 1472# because in Farvardin of last year [=March 1977], the official time was 1473# pulled forward one hour and this continued until the second half of last 1474# year [=September 1977] until in the second half of last year the official 1475# time was pulled back half an hour and that half hour still remains." 1476# 1477# This matches the time of the true noon published in the newspapers, as they 1478# clearly go from +05:00 to +04:00 after that date (which happened during a 1479# long weekend in Iran). 1480 1481# From Roozbeh Pournader (2022-05-31): 1482# [Movahedi S. Cultural preconceptions of time: Can we use operational time 1483# to meddle in God's Time? Comp Stud Soc Hist. 1985;27(3):385-400] 1484# https://www.jstor.org/stable/178704 1485# Here's the quotes from the paper: 1486# 1. '"Iran's official time keeper moved the clock one hour forward as from 1487# March 22, 1977 (Farvardin 2, 2536) to make maximum use of daylight and save 1488# in energy consumption. Thus Iran joined such other countries as Britain in 1489# observing what is known as 'daylight saving.' The proposal was originally 1490# put forward by the Ministry of Energy, in no way having any influence on 1491# observing religious ceremonies. Moving time one hour forward in summer 1492# means that at 11:00 o'clock on March 21, the official time was set as 1493# midnight March 22. Then September 24 will actually begin one hour later 1494# than the end of September 23 [...]." Iran's time base thus continued to be 1495# Greenwich Mean Time plus three and one-half hours (plus four and one-half 1496# hours in summer).' 1497# 1498# The article sources this from Iran Almanac and Book of Facts, 1977, Tehran: 1499# Echo of Iran, which is on Google Books at 1500# https://www.google.com/books/edition/Iran_Almanac_and_Book_of_Facts/9ybVAAAAMAAJ. 1501# (I confirmed it by searching for snippets.) 1502# 1503# 2. "After the fall of the shah, the revolutionary government returned to 1504# daylight-saving time (DST) on 26 May 1979." 1505# 1506# This seems to have been announced just one day in advance, on 25 May 1979. 1507# 1508# The change in 1977 clearly seems to be the first daylight savings effort in 1509# Iran. But the article doesn't mention what happened in 1978 (which was 1510# still during the shah's government), or how things continued in 1979 1511# onwards (which was during the Islamic Republic). 1512 1513# From Francis Santoni (2022-06-01): 1514# for Iran and 1977 the effective change is only 20 October 1515# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977). 1516# UIT is the Operational Bulletin of International Telecommunication Union. 1517 1518# From Roozbeh Pournader (2003-03-15): 1519# This is an English translation of what I just found (originally in Persian). 1520# The Gregorian dates in brackets are mine: 1521# 1522# Official Newspaper No. 13548-1370/6/25 [1991-09-16] 1523# No. 16760/T233 H 1370/6/10 [1991-09-01] 1524# 1525# The Rule About Change of the Official Time of the Country 1526# 1527# The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14], 1528# based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13] 1529# of the Country's Organization for Official and Employment Affairs, 1530# and referring to the law for equating the working hours of workers 1531# and officers in the whole country dated 1359/4/23 [1980-07-14], and 1532# for synchronizing the official times of the country, agreed that: 1533# 1534# The official time of the country will should move forward one hour 1535# at the 24[:00] hours of the first day of Farvardin and should return 1536# to its previous state at the 24[:00] hours of the 30th day of 1537# Shahrivar. 1538# 1539# First Deputy to the President - Hassan Habibi 1540# 1541# From personal experience, that agrees with what has been followed 1542# for at least the last 5 years. Before that, for a few years, the 1543# date used was the first Thursday night of Farvardin and the last 1544# Thursday night of Shahrivar, but I can't give exact dates.... 1545# 1546# From Roozbeh Pournader (2005-04-05): 1547# The text of the Iranian law, in effect since 1925, clearly mentions 1548# that the true solar year is the measure, and there is no arithmetic 1549# leap year calculation involved. There has never been any serious 1550# plan to change that law.... 1551# 1552# From Paul Eggert (2022-06-30): 1553# Go with Pournader for 1935 through spring 1979, and for timestamps 1554# after August 1991; go with with Shanks & Pottenger for other timestamps. 1555# Go with Santoni's citation of the UIT for fall 1977, as 20 October 1977 1556# is 28 Mehr 1356, consistent with the "Mehr" in Pournader's source. 1557# Assume that the UIT's "1930" is UTC, i.e., 24:00 local time. 1558# 1559# From Oscar van Vlijmen (2005-03-30), writing about future 1560# discrepancies between cal-persia and the Iranian calendar: 1561# For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for 1562# the vernal equinox and that gets so close to 12:00 some local 1563# Iranian time that the definition of the correct location needs to be 1564# known exactly, amongst other factors. 2157 is even closer: 1565# 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give 1566# no interpretation problem whatsoever. By the way, another instant 1567# in the near future where there will be a discrepancy between 1568# arithmetical and astronomical Iranian calendars will be in 2058: 1569# vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of 1570# Reingold's/Dershowitz' calculator gives correctly the Gregorian date 1571# 2058-03-21 for 1 Farvardin 1437 (astronomical). 1572# 1573# From Steffen Thorsen (2006-03-22): 1574# Several of my users have reported that Iran will not observe DST anymore: 1575# http://www.irna.ir/en/news/view/line-17/0603193812164948.htm 1576# 1577# From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen: 1578# ... the Guardian Council ... approved a law on Sunday to re-introduce 1579# daylight saving time ... 1580# https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916 1581# 1582# From Roozbeh Pournader (2007-11-05): 1583# This is quoted from Official Gazette of the Islamic Republic of 1584# Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24 1585# [2007-10-16]. I am doing the best translation I can:... 1586# The official time of the country will be moved forward for one hour 1587# on the 24 hours of the first day of the month of Farvardin and will 1588# be changed back to its previous state on the 24 hours of the 1589# thirtieth day of Shahrivar. 1590# 1591# From Ali Mirjamali (2022-05-10): 1592# Official IR News Agency announcement: irna.ir/xjJ3TT 1593# ... 1594# Highlights: DST will be cancelled for the next Iranian year 1402 1595# (i.e 2023-March-21) and forthcoming years. 1596# 1597# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1598# Work around a bug in zic 2022a and earlier. 1599Rule Iran 1910 only - Jan 1 00:00 0 - 1600# 1601Rule Iran 1977 only - Mar 21 23:00 1:00 - 1602Rule Iran 1977 only - Oct 20 24:00 0 - 1603Rule Iran 1978 only - Mar 24 24:00 1:00 - 1604Rule Iran 1978 only - Aug 5 01:00 0 - 1605Rule Iran 1979 only - May 26 24:00 1:00 - 1606Rule Iran 1979 only - Sep 18 24:00 0 - 1607Rule Iran 1980 only - Mar 20 24:00 1:00 - 1608Rule Iran 1980 only - Sep 22 24:00 0 - 1609Rule Iran 1991 only - May 2 24:00 1:00 - 1610Rule Iran 1992 1995 - Mar 21 24:00 1:00 - 1611Rule Iran 1991 1995 - Sep 21 24:00 0 - 1612Rule Iran 1996 only - Mar 20 24:00 1:00 - 1613Rule Iran 1996 only - Sep 20 24:00 0 - 1614Rule Iran 1997 1999 - Mar 21 24:00 1:00 - 1615Rule Iran 1997 1999 - Sep 21 24:00 0 - 1616Rule Iran 2000 only - Mar 20 24:00 1:00 - 1617Rule Iran 2000 only - Sep 20 24:00 0 - 1618Rule Iran 2001 2003 - Mar 21 24:00 1:00 - 1619Rule Iran 2001 2003 - Sep 21 24:00 0 - 1620Rule Iran 2004 only - Mar 20 24:00 1:00 - 1621Rule Iran 2004 only - Sep 20 24:00 0 - 1622Rule Iran 2005 only - Mar 21 24:00 1:00 - 1623Rule Iran 2005 only - Sep 21 24:00 0 - 1624Rule Iran 2008 only - Mar 20 24:00 1:00 - 1625Rule Iran 2008 only - Sep 20 24:00 0 - 1626Rule Iran 2009 2011 - Mar 21 24:00 1:00 - 1627Rule Iran 2009 2011 - Sep 21 24:00 0 - 1628Rule Iran 2012 only - Mar 20 24:00 1:00 - 1629Rule Iran 2012 only - Sep 20 24:00 0 - 1630Rule Iran 2013 2015 - Mar 21 24:00 1:00 - 1631Rule Iran 2013 2015 - Sep 21 24:00 0 - 1632Rule Iran 2016 only - Mar 20 24:00 1:00 - 1633Rule Iran 2016 only - Sep 20 24:00 0 - 1634Rule Iran 2017 2019 - Mar 21 24:00 1:00 - 1635Rule Iran 2017 2019 - Sep 21 24:00 0 - 1636Rule Iran 2020 only - Mar 20 24:00 1:00 - 1637Rule Iran 2020 only - Sep 20 24:00 0 - 1638Rule Iran 2021 2022 - Mar 21 24:00 1:00 - 1639Rule Iran 2021 2022 - Sep 21 24:00 0 - 1640 1641# Zone NAME STDOFF RULES FORMAT [UNTIL] 1642Zone Asia/Tehran 3:25:44 - LMT 1916 1643 3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time 1644 3:30 Iran +0330/+0430 1977 Oct 20 24:00 1645 4:00 Iran +04/+05 1979 1646 3:30 Iran +0330/+0430 1647 1648 1649# Iraq 1650# 1651# From Jonathan Lennox (2000-06-12): 1652# An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in 1653# the U.S. edition) on the Iraqi Kurds contains a paragraph: 1654# "The three northern provinces ... switched their clocks this spring and 1655# are an hour ahead of Baghdad." 1656# 1657# But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows: 1658# In the past, some Kurdish nationalists, as a protest to the Iraqi 1659# Government, did not adhere to daylight saving time. They referred 1660# to daylight saving as Saddam time. But, as of today, the time zone 1661# in Iraqi-Kurdistan is on standard time with Baghdad, Iraq. 1662# 1663# So we'll ignore the Economist's claim. 1664 1665# From Steffen Thorsen (2008-03-10): 1666# The cabinet in Iraq abolished DST last week, according to the following 1667# news sources (in Arabic): 1668# http://www.aljeeran.net/wesima_articles/news-20080305-98602.html 1669# http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10 1670# 1671# We have published a short article in English about the change: 1672# https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html 1673 1674# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1675Rule Iraq 1982 only - May 1 0:00 1:00 - 1676Rule Iraq 1982 1984 - Oct 1 0:00 0 - 1677Rule Iraq 1983 only - Mar 31 0:00 1:00 - 1678Rule Iraq 1984 1985 - Apr 1 0:00 1:00 - 1679Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 - 1680Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 - 1681# IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo. 1682# Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this. 1683# 1684Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 - 1685Rule Iraq 1991 2007 - Oct 1 3:00s 0 - 1686# Zone NAME STDOFF RULES FORMAT [UNTIL] 1687Zone Asia/Baghdad 2:57:40 - LMT 1890 1688 2:57:36 - BMT 1918 # Baghdad Mean Time? 1689 3:00 - +03 1982 May 1690 3:00 Iraq +03/+04 1691 1692 1693############################################################################### 1694 1695# Israel 1696 1697# For more info about the motivation for DST in Israel, see: 1698# Barak Y. Israel's Daylight Saving Time controversy. Israel Affairs. 1699# 2020-08-11. https://doi.org/10.1080/13537121.2020.1806564 1700 1701# From Ephraim Silverberg (2001-01-11): 1702# 1703# I coined "IST/IDT" circa 1988. Until then there were three 1704# different abbreviations in use: 1705# 1706# JST Jerusalem Standard Time [Danny Braniss, Hebrew University] 1707# IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion] 1708# EEST Eastern Europe Standard Time [used by almost everyone else] 1709# 1710# Since timezones should be called by country and not capital cities, 1711# I ruled out JST. As Israel is in Asia Minor and not Eastern Europe, 1712# EEST was equally unacceptable. Since "zonal" was not compatible with 1713# any other timezone abbreviation, I felt that 'IST' was the way to go 1714# and, indeed, it has received almost universal acceptance in timezone 1715# settings in Israeli computers. 1716# 1717# In any case, I am happy to share timezone abbreviations with India, 1718# high on my favorite-country list (and not only because my wife's 1719# family is from India). 1720 1721# From P Chan (2020-10-27), with corrections: 1722# 1723# 1940-1946 Supplement No. 2 to the Palestine Gazette 1724# # issue page Order No. dated start end note 1725# 1 1010 729 67 of 1940 1940-05-22 1940-05-31* 1940-09-30* revoked by #2 1726# 2 1013 758 73 of 1940 1940-05-31 1940-05-31 1940-09-30 1727# 3 1055 1574 196 of 1940 1940-11-06 1940-11-16 1940-12-31 1728# 4 1066 1811 208 of 1940 1940-12-17 1940-12-31 1941-12-31 1729# 5 1156 1967 116 of 1941 1941-12-16 1941-12-31 1942-12-31* amended by #6 1730# 6 1228 1608 86 of 1942 1942-10-14 1941-12-31 1942-10-31 1731# 7 1256 279 21 of 1943 1943-03-18 1943-03-31 1943-10-31 1732# 8 1323 249 19 of 1944 1944-03-13 1944-03-31 1944-10-31 1733# 9 1402 328 20 of 1945 1945-04-05 1945-04-15 1945-10-31 1734#10 1487 596 14 of 1946 1946-04-04 1946-04-15 1946-10-31 1735# 1736# 1948 Iton Rishmi (Official Gazette of the Provisional Government) 1737# # issue page dated start end 1738#11 2 7 1948-05-20 1948-05-22 1948-10-31* 1739# ^This moved timezone to +04, replaced by #12 from 1948-08-31 24:00 GMT. 1740#12 17 (Annex B) 84 1948-08-22 1948-08-31 1948-10-31 1741# 1742# 1949-2000 Kovetz HaTakanot (Collection of Regulations) 1743# # issue page dated start end note 1744#13 6 133 1949-03-23 1949-04-30 1949-10-31 1745#14 80 755 1950-03-17 1950-04-15 1950-09-14 1746#15 164 782 1951-03-22 1951-03-31 1951-09-29* amended by #16 1747#16 206 1940 1951-09-23 ---------- 1951-10-22* amended by #17 1748#17 212 78 1951-10-19 ---------- 1951-11-10 1749#18 254 652 1952-03-03 1952-04-19 1952-09-27* amended by #19 1750#19 300 11 1952-09-15 ---------- 1952-10-18 1751#20 348 817 1953-03-03 1953-04-11 1953-09-12 1752#21 420 385 1954-02-17 1954-06-12 1954-09-11 1753#22 497 548 1955-01-14 1955-06-11 1955-09-10 1754#23 591 608 1956-03-12 1956-06-02 1956-09-29 1755#24 680 957 1957-02-08 1957-04-27 1957-09-21 1756#25 3192 1418 1974-06-28 1974-07-06 1974-10-12 1757#26 3322 1389 1975-04-03 1975-04-19 1975-08-30 1758#27 4146 2089 1980-07-15 1980-08-02 1980-09-13 1759#28 4604 1081 1984-02-22 1984-05-05* 1984-08-25* revoked by #29 1760#29 4619 1312 1984-04-06 1984-05-05 1984-08-25 1761#30 4744 475 1984-12-23 1985-04-13 1985-09-14* amended by #31 1762#31 4851 1848 1985-08-18 ---------- 1985-08-31 1763#32 4932 899 1986-04-22 1986-05-17 1986-09-06 1764#33 5013 580 1987-02-15 1987-04-18* 1987-08-22* revoked by #34 1765#34 5021 744 1987-03-30 1987-04-14 1987-09-12 1766#35 5096 659 1988-02-14 1988-04-09 1988-09-03 1767#36 5167 514 1989-02-03 1989-04-29 1989-09-02 1768#37 5248 375 1990-01-23 1990-03-24 1990-08-25 1769#38 5335 612 1991-02-10 1991-03-09* 1991-08-31 amended by #39 1770# 1992-03-28 1992-09-05 1771#39 5339 709 1991-03-04 1991-03-23 ---------- 1772#40 5506 503 1993-02-18 1993-04-02 1993-09-05 1773# 1994-04-01 1994-08-28 1774# 1995-03-31 1995-09-03 1775#41 5731 438 1996-01-01 1996-03-14 1996-09-15 1776# 1997-03-13* 1997-09-18* overridden by 1997 Temp Prov 1777# 1998-03-19* 1998-09-17* revoked by #42 1778#42 5853 1243 1997-09-18 1998-03-19 1998-09-05 1779#43 5937 77 1998-10-18 1999-04-02 1999-09-03 1780# 2000-04-14* 2000-09-15* revoked by #44 1781# 2001-04-13* 2001-09-14* revoked by #44 1782#44 6024 39 2000-03-14 2000-04-14 2000-10-22* overridden by 2000 Temp Prov 1783# 2001-04-06* 2001-10-10* overridden by 2000 Temp Prov 1784# 2002-03-29* 2002-10-29* overridden by 2000 Temp Prov 1785# 1786# These are laws enacted by the Knesset since the Minister could only alter the 1787# transition dates at least six months in advanced under the 1992 Law. 1788# dated start end 1789# 1997 Temporary Provisions 1997-03-06 1997-03-20 1997-09-13 1790# 2000 Temporary Provisions 2000-07-28 ---------- 2000-10-06 1791# 2001-04-09 2001-09-24 1792# 2002-03-29 2002-10-07 1793# 2003-03-28 2003-10-03 1794# 2004-04-07 2004-09-22 1795# Note: 1796# Transition times in 1940-1957 (#1-#24) were midnight GMT, 1797# in 1974-1998 (#25-#42 and the 1997 Temporary Provisions) were midnight, 1798# in 1999-April 2000 (#43,#44) were 02:00, 1799# in the 2000 Temporary Provisions were 01:00. 1800# 1801# ----------------------------------------------------------------------------- 1802# Links: 1803# 1 https://findit.library.yale.edu/images_layout/view?parentoid=15537490&increment=687 1804# 2 https://findit.library.yale.edu/images_layout/view?parentoid=15537490&increment=716 1805# 3 https://findit.library.yale.edu/images_layout/view?parentoid=15537491&increment=721 1806# 4 https://findit.library.yale.edu/images_layout/view?parentoid=15537491&increment=958 1807# 5 https://findit.library.yale.edu/images_layout/view?parentoid=15537502&increment=558 1808# 6 https://findit.library.yale.edu/images_layout/view?parentoid=15537511&increment=105 1809# 7 https://findit.library.yale.edu/images_layout/view?parentoid=15537516&increment=278 1810# 8 https://findit.library.yale.edu/images_layout/view?parentoid=15537522&increment=248 1811# 9 https://findit.library.yale.edu/images_layout/view?parentoid=15537530&increment=329 1812#10 https://findit.library.yale.edu/images_layout/view?parentoid=15537537&increment=601 1813#11 https://www.nevo.co.il/law_word/law12/er-002.pdf#page=3 1814#12 https://www.nevo.co.il/law_word/law12/er-017-t2.pdf#page=4 1815#13 https://www.nevo.co.il/law_word/law06/tak-0006.pdf#page=3 1816#14 https://www.nevo.co.il/law_word/law06/tak-0080.pdf#page=7 1817#15 https://www.nevo.co.il/law_word/law06/tak-0164.pdf#page=10 1818#16 https://www.nevo.co.il/law_word/law06/tak-0206.pdf#page=4 1819#17 https://www.nevo.co.il/law_word/law06/tak-0212.pdf#page=2 1820#18 https://www.nevo.co.il/law_word/law06/tak-0254.pdf#page=4 1821#19 https://www.nevo.co.il/law_word/law06/tak-0300.pdf#page=5 1822#20 https://www.nevo.co.il/law_word/law06/tak-0348.pdf#page=3 1823#21 https://www.nevo.co.il/law_word/law06/tak-0420.pdf#page=5 1824#22 https://www.nevo.co.il/law_word/law06/tak-0497.pdf#page=10 1825#23 https://www.nevo.co.il/law_word/law06/tak-0591.pdf#page=6 1826#24 https://www.nevo.co.il/law_word/law06/tak-0680.pdf#page=3 1827#25 https://www.nevo.co.il/law_word/law06/tak-3192.pdf#page=2 1828#26 https://www.nevo.co.il/law_word/law06/tak-3322.pdf#page=5 1829#27 https://www.nevo.co.il/law_word/law06/tak-4146.pdf#page=2 1830#28 https://www.nevo.co.il/law_word/law06/tak-4604.pdf#page=7 1831#29 https://www.nevo.co.il/law_word/law06/tak-4619.pdf#page=2 1832#30 https://www.nevo.co.il/law_word/law06/tak-4744.pdf#page=11 1833#31 https://www.nevo.co.il/law_word/law06/tak-4851.pdf#page=2 1834#32 https://www.nevo.co.il/law_word/law06/tak-4932.pdf#page=19 1835#33 https://www.nevo.co.il/law_word/law06/tak-5013.pdf#page=8 1836#34 https://www.nevo.co.il/law_word/law06/tak-5021.pdf#page=8 1837#35 https://www.nevo.co.il/law_word/law06/tak-5096.pdf#page=3 1838#36 https://www.nevo.co.il/law_word/law06/tak-5167.pdf#page=2 1839#37 https://www.nevo.co.il/law_word/law06/tak-5248.pdf#page=7 1840#38 https://www.nevo.co.il/law_word/law06/tak-5335.pdf#page=6 1841#39 https://www.nevo.co.il/law_word/law06/tak-5339.pdf#page=7 1842#40 https://www.nevo.co.il/law_word/law06/tak-5506.pdf#page=19 1843#41 https://www.nevo.co.il/law_word/law06/tak-5731.pdf#page=2 1844#42 https://www.nevo.co.il/law_word/law06/tak-5853.pdf#page=3 1845#43 https://www.nevo.co.il/law_word/law06/tak-5937.pdf#page=9 1846#44 https://www.nevo.co.il/law_word/law06/tak-6024.pdf#page=4 1847# 1848# Time Determination (Temporary Provisions) Law, 1997 1849# https://www.nevo.co.il/law_html/law19/p201_003.htm 1850# 1851# Time Determination (Temporary Provisions) Law, 2000 1852# https://www.nevo.co.il/law_html/law19/p201_004.htm 1853# 1854# Time Determination Law, 1992 and amendments 1855# https://www.nevo.co.il/law_html/law01/p201_002.htm 1856# https://main.knesset.gov.il/Activity/Legislation/Laws/Pages/LawPrimary.aspx?lawitemid=2001174 1857 1858# From Paul Eggert (2020-10-27): 1859# Several of the midnight transitions mentioned above are ambiguous; 1860# are they 00:00, 00:00s, 24:00, or 24:00s? When resolving these ambiguities, 1861# try to minimize changes from previous tzdb versions, for lack of better info. 1862# Commentary from previous versions is included below, to help explain this. 1863 1864# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1865Rule Zion 1940 only - May 31 24:00u 1:00 D 1866Rule Zion 1940 only - Sep 30 24:00u 0 S 1867Rule Zion 1940 only - Nov 16 24:00u 1:00 D 1868Rule Zion 1942 1946 - Oct 31 24:00u 0 S 1869Rule Zion 1943 1944 - Mar 31 24:00u 1:00 D 1870Rule Zion 1945 1946 - Apr 15 24:00u 1:00 D 1871Rule Zion 1948 only - May 22 24:00u 2:00 DD 1872Rule Zion 1948 only - Aug 31 24:00u 1:00 D 1873Rule Zion 1948 1949 - Oct 31 24:00u 0 S 1874Rule Zion 1949 only - Apr 30 24:00u 1:00 D 1875Rule Zion 1950 only - Apr 15 24:00u 1:00 D 1876Rule Zion 1950 only - Sep 14 24:00u 0 S 1877Rule Zion 1951 only - Mar 31 24:00u 1:00 D 1878Rule Zion 1951 only - Nov 10 24:00u 0 S 1879Rule Zion 1952 only - Apr 19 24:00u 1:00 D 1880Rule Zion 1952 only - Oct 18 24:00u 0 S 1881Rule Zion 1953 only - Apr 11 24:00u 1:00 D 1882Rule Zion 1953 only - Sep 12 24:00u 0 S 1883Rule Zion 1954 only - Jun 12 24:00u 1:00 D 1884Rule Zion 1954 only - Sep 11 24:00u 0 S 1885Rule Zion 1955 only - Jun 11 24:00u 1:00 D 1886Rule Zion 1955 only - Sep 10 24:00u 0 S 1887Rule Zion 1956 only - Jun 2 24:00u 1:00 D 1888Rule Zion 1956 only - Sep 29 24:00u 0 S 1889Rule Zion 1957 only - Apr 27 24:00u 1:00 D 1890Rule Zion 1957 only - Sep 21 24:00u 0 S 1891Rule Zion 1974 only - Jul 6 24:00 1:00 D 1892Rule Zion 1974 only - Oct 12 24:00 0 S 1893Rule Zion 1975 only - Apr 19 24:00 1:00 D 1894Rule Zion 1975 only - Aug 30 24:00 0 S 1895 1896# From Alois Treindl (2019-03-06): 1897# http://www.moin.gov.il/Documents/שעון%20קיץ/clock-50-years-7-2014.pdf 1898# From Isaac Starkman (2019-03-06): 1899# Summer time was in that period in 1980 and 1984, see 1900# https://www.ynet.co.il/articles/0,7340,L-3951073,00.html 1901# You can of course read it in translation. 1902# I checked the local newspapers for that years. 1903# It started on midnight and end at 01.00 am. 1904# From Paul Eggert (2019-03-06): 1905# Also see this thread about the moin.gov.il URL: 1906# https://mm.icann.org/pipermail/tz/2018-November/027194.html 1907Rule Zion 1980 only - Aug 2 24:00s 1:00 D 1908Rule Zion 1980 only - Sep 13 24:00s 0 S 1909Rule Zion 1984 only - May 5 24:00s 1:00 D 1910Rule Zion 1984 only - Aug 25 24:00s 0 S 1911 1912Rule Zion 1985 only - Apr 13 24:00 1:00 D 1913Rule Zion 1985 only - Aug 31 24:00 0 S 1914Rule Zion 1986 only - May 17 24:00 1:00 D 1915Rule Zion 1986 only - Sep 6 24:00 0 S 1916Rule Zion 1987 only - Apr 14 24:00 1:00 D 1917Rule Zion 1987 only - Sep 12 24:00 0 S 1918 1919# From Avigdor Finkelstein (2014-03-05): 1920# I check the Parliament (Knesset) records and there it's stated that the 1921# [1988] transition should take place on Saturday night, when the Sabbath 1922# ends and changes to Sunday. 1923Rule Zion 1988 only - Apr 9 24:00 1:00 D 1924Rule Zion 1988 only - Sep 3 24:00 0 S 1925 1926# From Ephraim Silverberg 1927# (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22, 1928# and 2005-02-17): 1929 1930# According to the Office of the Secretary General of the Ministry of 1931# Interior, there is NO set rule for Daylight-Savings/Standard time changes. 1932# One thing is entrenched in law, however: that there must be at least 150 1933# days of daylight savings time annually. From 1993-1998, the change to 1934# daylight savings time was on a Friday morning from midnight IST to 1935# 1 a.m IDT; up until 1998, the change back to standard time was on a 1936# Saturday night from midnight daylight savings time to 11 p.m. standard 1937# time. 1996 is an exception to this rule where the change back to standard 1938# time took place on Sunday night instead of Saturday night to avoid 1939# conflicts with the Jewish New Year. In 1999, the change to 1940# daylight savings time was still on a Friday morning but from 1941# 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time 1942# was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for 1943# 1999 only. In the year 2000, the change to daylight savings time was 1944# similar to 1999, but although the change back will be on a Friday, it 1945# will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all 1946# changes to/from will take place at 1 a.m. old time, but now there is no 1947# rule as to what day of the week it will take place in as the start date 1948# (except in 2003) is the night after the Passover Seder (i.e. the eve 1949# of the 16th of Nisan in the lunar Hebrew calendar) and the end date 1950# (except in 2002) is three nights before Yom Kippur [Day of Atonement] 1951# (the eve of the 7th of Tishrei in the lunar Hebrew calendar). 1952 1953# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1954Rule Zion 1989 only - Apr 29 24:00 1:00 D 1955Rule Zion 1989 only - Sep 2 24:00 0 S 1956Rule Zion 1990 only - Mar 24 24:00 1:00 D 1957Rule Zion 1990 only - Aug 25 24:00 0 S 1958Rule Zion 1991 only - Mar 23 24:00 1:00 D 1959Rule Zion 1991 only - Aug 31 24:00 0 S 1960Rule Zion 1992 only - Mar 28 24:00 1:00 D 1961Rule Zion 1992 only - Sep 5 24:00 0 S 1962Rule Zion 1993 only - Apr 2 0:00 1:00 D 1963Rule Zion 1993 only - Sep 5 0:00 0 S 1964 1965# The dates for 1994-1995 were obtained from Office of the Spokeswoman for the 1966# Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by 1967# calling the office directly at 972-2-6701447 or 972-2-6701448. 1968 1969# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1970Rule Zion 1994 only - Apr 1 0:00 1:00 D 1971Rule Zion 1994 only - Aug 28 0:00 0 S 1972Rule Zion 1995 only - Mar 31 0:00 1:00 D 1973Rule Zion 1995 only - Sep 3 0:00 0 S 1974 1975# The dates for 1996 were determined by the Minister of Interior of the 1976# time, Haim Ramon. The official announcement regarding 1996-1998 1977# (with the dates for 1997-1998 no longer being relevant) can be viewed at: 1978# 1979# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz 1980# 1981# The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa. 1982# 1983# The official announcements for the years 1997-1999 can be viewed at: 1984# 1985# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz 1986# 1987# where YYYY is the relevant year. 1988 1989# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 1990Rule Zion 1996 only - Mar 14 24:00 1:00 D 1991Rule Zion 1996 only - Sep 15 24:00 0 S 1992Rule Zion 1997 only - Mar 20 24:00 1:00 D 1993Rule Zion 1997 only - Sep 13 24:00 0 S 1994Rule Zion 1998 only - Mar 20 0:00 1:00 D 1995Rule Zion 1998 only - Sep 6 0:00 0 S 1996Rule Zion 1999 only - Apr 2 2:00 1:00 D 1997Rule Zion 1999 only - Sep 3 2:00 0 S 1998 1999# The Knesset Interior Committee has changed the dates for 2000 for 2000# the third time in just over a year and have set new dates for the 2001# years 2001-2004 as well. 2002# 2003# The official announcement for the start date of 2000 can be viewed at: 2004# 2005# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz 2006# 2007# The official announcement for the end date of 2000 and the dates 2008# for the years 2001-2004 can be viewed at: 2009# 2010# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz 2011 2012# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2013Rule Zion 2000 only - Apr 14 2:00 1:00 D 2014Rule Zion 2000 only - Oct 6 1:00 0 S 2015Rule Zion 2001 only - Apr 9 1:00 1:00 D 2016Rule Zion 2001 only - Sep 24 1:00 0 S 2017Rule Zion 2002 only - Mar 29 1:00 1:00 D 2018Rule Zion 2002 only - Oct 7 1:00 0 S 2019Rule Zion 2003 only - Mar 28 1:00 1:00 D 2020Rule Zion 2003 only - Oct 3 1:00 0 S 2021Rule Zion 2004 only - Apr 7 1:00 1:00 D 2022Rule Zion 2004 only - Sep 22 1:00 0 S 2023 2024# The proposed law agreed upon by the Knesset Interior Committee on 2025# 2005-02-14 is that, for 2005 and beyond, DST starts at 02:00 the 2026# last Friday before April 2nd (i.e. the last Friday in March or April 2027# 1st itself if it falls on a Friday) and ends at 02:00 on the Saturday 2028# night _before_ the fast of Yom Kippur. 2029# 2030# Those who can read Hebrew can view the announcement at: 2031# 2032# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps 2033 2034# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2035Rule Zion 2005 2012 - Apr Fri<=1 2:00 1:00 D 2036Rule Zion 2005 only - Oct 9 2:00 0 S 2037Rule Zion 2006 only - Oct 1 2:00 0 S 2038Rule Zion 2007 only - Sep 16 2:00 0 S 2039Rule Zion 2008 only - Oct 5 2:00 0 S 2040Rule Zion 2009 only - Sep 27 2:00 0 S 2041Rule Zion 2010 only - Sep 12 2:00 0 S 2042Rule Zion 2011 only - Oct 2 2:00 0 S 2043Rule Zion 2012 only - Sep 23 2:00 0 S 2044 2045# From Ephraim Silverberg (2020-10-26): 2046# The current time law (2013) from the State of Israel can be viewed 2047# (in Hebrew) at: 2048# ftp://ftp.cs.huji.ac.il/pub/tz/israel/announcements/2013+law.pdf 2049# It translates to: 2050# Every year, in the period from the Friday before the last Sunday in 2051# the month of March at 02:00 a.m. until the last Sunday of the month 2052# of October at 02:00 a.m., Israel Time will be advanced an additional 2053# hour such that it will be UTC+3. 2054 2055# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2056Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D 2057Rule Zion 2013 max - Oct lastSun 2:00 0 S 2058 2059# Zone NAME STDOFF RULES FORMAT [UNTIL] 2060Zone Asia/Jerusalem 2:20:54 - LMT 1880 2061 2:20:40 - JMT 1918 # Jerusalem Mean Time? 2062 2:00 Zion I%sT 2063 2064 2065 2066############################################################################### 2067 2068# Japan 2069 2070# '9:00' and 'JST' is from Guy Harris. 2071 2072# From Paul Eggert (2020-01-19): 2073# Starting in the 7th century, Japan generally followed an ancient Chinese 2074# timekeeping system that divided night and day into six hours each, 2075# with hour length depending on season. In 1873 the government 2076# started requiring the use of a Western style 24-hour clock. See: 2077# Yulia Frumer, "Making Time: Astronomical Time Measurement in Tokugawa Japan" 2078# <https://www.worldcat.org/oclc/1043907065>. As the tzdb code and 2079# data support only 24-hour clocks, its tables model timestamps before 2080# 1873 using Western-style local mean time. 2081 2082# From Hideyuki Suzuki (1998-11-09): 2083# 'Tokyo' usually stands for the former location of Tokyo Astronomical 2084# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. 2085# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' 2086# edited by National Astronomical Observatory of Japan.... 2087# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). 2088# The law is enacted on 1886-07-07. 2089 2090# From Hideyuki Suzuki (1998-11-16): 2091# The ordinance No. 51 (1886) established "standard time" in Japan, 2092# which stands for the time on 135° E. 2093# In the ordinance No. 167 (1895), "standard time" was renamed to "central 2094# standard time". And the same ordinance also established "western standard 2095# time", which stands for the time on 120° E.... But "western standard 2096# time" was abolished in the ordinance No. 529 (1937). In the ordinance No. 2097# 167, there is no mention regarding for what place western standard time is 2098# standard.... 2099# 2100# I wrote "ordinance" above, but I don't know how to translate. 2101# In Japanese it's "chokurei", which means ordinance from emperor. 2102 2103# From Yu-Cheng Chuang (2013-07-12): 2104# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause 2105# about standard time" ... The adoption began from Jan 1, 1896. 2106# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) 2107# 2108# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which 2109# means the whole Japan territory, including later occupations, adopt Japan 2110# Central Time (UT+9). The adoption began on Oct 1, 1937. 2111# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 2112 2113# From Paul Eggert (1995-03-06): 2114# Today's _Asahi Evening News_ (page 4) reports that Japan had 2115# daylight saving between 1948 and 1951, but "the system was discontinued 2116# because the public believed it would lead to longer working hours." 2117 2118# From Mayumi Negishi in the 2005-08-10 Japan Times: 2119# http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm 2120# Occupation authorities imposed daylight-saving time on Japan on 2121# [1948-05-01].... But lack of prior debate and the execution of 2122# daylight-saving time just three days after the bill was passed generated 2123# deep hatred of the concept.... The Diet unceremoniously passed a bill to 2124# dump the unpopular system in October 1951, less than a month after the San 2125# Francisco Peace Treaty was signed. (A government poll in 1951 showed 53% 2126# of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who 2127# wanted to keep it.) 2128 2129# From Takayuki Nikai (2018-01-19): 2130# The source of information is Japanese law. 2131# http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00219480428029.htm 2132# http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00719500331039.htm 2133# ... In summary, it is written as follows. From 24:00 on the first Saturday 2134# in May, until 0:00 on the day after the second Saturday in September. 2135 2136# From Phake Nick (2018-09-27): 2137# [T]he webpage authored by National Astronomical Observatory of Japan 2138# https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EF.html 2139# ... mentioned that using Showa 23 (year 1948) as example, 13pm of September 2140# 11 in summer time will equal to 0am of September 12 in standard time. 2141# It cited a document issued by the Liaison Office which briefly existed 2142# during the postwar period of Japan, where the detail on implementation 2143# of the summer time is described in the document. 2144# https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EFB2C6BBFEB9EFA4CEBCC2BBDCA4CBA4C4A4A4A4C6.pdf 2145# The text in the document do instruct a fall back to occur at 2146# September 11, 13pm in summer time, while ordinary citizens can 2147# change the clock before they sleep. 2148# 2149# From Paul Eggert (2018-09-27): 2150# This instruction is equivalent to "Sat>=8 25:00", so use that. zic treats 2151# it like "Sun>=9 01:00", which is not quite the same but is the best we can 2152# do in any POSIX or C platform. The "25:00" assumes zic from 2007 or later, 2153# which should be safe now. 2154 2155# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2156Rule Japan 1948 only - May Sat>=1 24:00 1:00 D 2157Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S 2158Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D 2159Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D 2160 2161# Zone NAME STDOFF RULES FORMAT [UNTIL] 2162Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 2163 9:00 Japan J%sT 2164# Since 1938, all Japanese possessions have been like Asia/Tokyo, 2165# except that Truk (Chuuk), Ponape (Pohnpei), and Jaluit (Kosrae) did not 2166# switch from +10 to +09 until 1941-04-01; see the 'australasia' file. 2167 2168# Jordan 2169# 2170# From <http://star.arabia.com/990701/JO9.html> 2171# Jordan Week (1999-07-01) via Steffen Thorsen (1999-09-09): 2172# Clocks in Jordan were forwarded one hour on Wednesday at midnight, 2173# in accordance with the government's decision to implement summer time 2174# all year round. 2175# 2176# From <http://star.arabia.com/990930/JO9.html> 2177# Jordan Week (1999-09-30) via Steffen Thorsen (1999-11-09): 2178# Winter time starts today Thursday, 30 September. Clocks will be turned back 2179# by one hour. This is the latest government decision and it's final! 2180# The decision was taken because of the increase in working hours in 2181# government's departments from six to seven hours. 2182# 2183# From Paul Eggert (2005-11-22): 2184# Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com. 2185# 2186# From Steffen Thorsen (2005-11-23): 2187# For Jordan I have received multiple independent user reports every year 2188# about DST end dates, as the end-rule is different every year. 2189# 2190# From Steffen Thorsen (2006-10-01), after a heads-up from Hilal Malawi: 2191# http://www.petranews.gov.jo/nepras/2006/Sep/05/4000.htm 2192# "Jordan will switch to winter time on Friday, October 27". 2193# 2194 2195# From Steffen Thorsen (2009-04-02): 2196# This single one might be good enough, (2009-03-24, Arabic): 2197# http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279 2198# 2199# Google's translation: 2200# 2201# > The Council of Ministers decided in 2002 to adopt the principle of timely 2202# > submission of the summer at 60 minutes as of midnight on the last Thursday 2203# > of the month of March of each year. 2204# 2205# So - this means the midnight between Thursday and Friday since 2002. 2206 2207# From Arthur David Olson (2009-04-06): 2208# We still have Jordan switching to DST on Thursdays in 2000 and 2001. 2209 2210# From Steffen Thorsen (2012-10-25): 2211# Yesterday the government in Jordan announced that they will not 2212# switch back to standard time this winter, so the will stay on DST 2213# until about the same time next year (at least). 2214# http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?NewsID=88950 2215 2216# From Steffen Thorsen (2013-12-11): 2217# Jordan Times and other sources say that Jordan is going back to 2218# UTC+2 on 2013-12-19 at midnight: 2219# http://jordantimes.com/govt-decides-to-switch-back-to-wintertime 2220# Official, in Arabic: 2221# http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14 2222# ... Our background/permalink about it 2223# https://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html 2224# ... 2225# http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P 2226# ... says midnight for the coming one and 1:00 for the ones in the future 2227# (and they will use DST again next year, using the normal schedule). 2228 2229# From Paul Eggert (2013-12-11): 2230# As Steffen suggested, consider the past 21-month experiment to be DST. 2231 2232# From Steffen Thorsen (2021-09-24): 2233# The Jordanian Government announced yesterday that they will start DST 2234# in February instead of March: 2235# https://petra.gov.jo/Include/InnerPage.jsp?ID=37683&lang=en&name=en_news (English) 2236# https://petra.gov.jo/Include/InnerPage.jsp?ID=189969&lang=ar&name=news (Arabic) 2237# From the Arabic version, it seems to say it would be at midnight 2238# (assume 24:00) on the last Thursday in February, starting from 2022. 2239 2240# From Issam Al-Zuwairi (2022-10-05): 2241# The Council of Ministers in Jordan decided Wednesday 5th October 2022, 2242# that daylight saving time (DST) will be throughout the year.... 2243# 2244# From Brian Inglis (2022-10-06): 2245# https://petra.gov.jo/Include/InnerPage.jsp?ID=45567&lang=en&name=en_news 2246# 2247# From Paul Eggert (2022-10-05): 2248# Like Syria, model this as a transition from EEST +03 (DST) to plain +03 2249# (non-DST) at the point where DST would otherwise have ended. 2250 2251# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2252Rule Jordan 1973 only - Jun 6 0:00 1:00 S 2253Rule Jordan 1973 1975 - Oct 1 0:00 0 - 2254Rule Jordan 1974 1977 - May 1 0:00 1:00 S 2255Rule Jordan 1976 only - Nov 1 0:00 0 - 2256Rule Jordan 1977 only - Oct 1 0:00 0 - 2257Rule Jordan 1978 only - Apr 30 0:00 1:00 S 2258Rule Jordan 1978 only - Sep 30 0:00 0 - 2259Rule Jordan 1985 only - Apr 1 0:00 1:00 S 2260Rule Jordan 1985 only - Oct 1 0:00 0 - 2261Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S 2262Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 - 2263Rule Jordan 1989 only - May 8 0:00 1:00 S 2264Rule Jordan 1990 only - Apr 27 0:00 1:00 S 2265Rule Jordan 1991 only - Apr 17 0:00 1:00 S 2266Rule Jordan 1991 only - Sep 27 0:00 0 - 2267Rule Jordan 1992 only - Apr 10 0:00 1:00 S 2268Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 - 2269Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S 2270Rule Jordan 1994 only - Sep Fri>=15 0:00 0 - 2271Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 - 2272Rule Jordan 1999 only - Jul 1 0:00s 1:00 S 2273Rule Jordan 1999 2002 - Sep lastFri 0:00s 0 - 2274Rule Jordan 2000 2001 - Mar lastThu 0:00s 1:00 S 2275Rule Jordan 2002 2012 - Mar lastThu 24:00 1:00 S 2276Rule Jordan 2003 only - Oct 24 0:00s 0 - 2277Rule Jordan 2004 only - Oct 15 0:00s 0 - 2278Rule Jordan 2005 only - Sep lastFri 0:00s 0 - 2279Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 - 2280Rule Jordan 2013 only - Dec 20 0:00 0 - 2281Rule Jordan 2014 2021 - Mar lastThu 24:00 1:00 S 2282Rule Jordan 2014 2022 - Oct lastFri 0:00s 0 - 2283Rule Jordan 2022 only - Feb lastThu 24:00 1:00 S 2284# Zone NAME STDOFF RULES FORMAT [UNTIL] 2285Zone Asia/Amman 2:23:44 - LMT 1931 2286 2:00 Jordan EE%sT 2022 Oct 28 0:00s 2287 3:00 - +03 2288 2289 2290# Kazakhstan 2291 2292# From Kazakhstan Embassy's News Bulletin No. 11 2293# <http://www.kazsociety.org.uk/news/2005/03/30.htm> (2005-03-21): 2294# The Government of Kazakhstan passed a resolution March 15 abolishing 2295# daylight saving time citing lack of economic benefits and health 2296# complications coupled with a decrease in productivity. 2297# 2298# From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28): 2299# ... what happened was that the former Kazakhstan Eastern time zone 2300# was "blended" with the Central zone. Therefore, Kazakhstan now has 2301# two time zones, and difference between them is one hour. The zone 2302# closer to UTC is the former Western zone (probably still called the 2303# same), encompassing four provinces in the west: Aqtöbe, Atyraū, 2304# Mangghystaū, and West Kazakhstan. The other zone encompasses 2305# everything else.... I guess that would make Kazakhstan time zones 2306# de jure UTC+5 and UTC+6 respectively. 2307 2308# From Stepan Golosunov (2016-03-27): 2309# Review of the linked documents from http://adilet.zan.kz/ 2310# produced the following data for post-1991 Kazakhstan: 2311# 2312# 0. Act of the Cabinet of Ministers of the USSR 2313# from 1991-02-04 No. 20 2314# http://pravo.gov.ru/proxy/ips/?docbody=&nd=102010545 2315# removed the extra hour ("decree time") on the territory of the USSR 2316# starting with the last Sunday of March 1991. 2317# It also allowed (but not mandated) Kazakh SSR, Kirghiz SSR, Tajik SSR, 2318# Turkmen SSR and Uzbek SSR to not have "summer" time. 2319# 2320# The 1992-01-13 act also refers to the act of the Cabinet of Ministers 2321# of the Kazakh SSR from 1991-03-20 No. 170 "About the act of the Cabinet 2322# of Ministers of the USSR from 1991-02-04 No. 20" but I didn't found its 2323# text. 2324# 2325# According to Izvestia newspaper No. 68 (23334) from 1991-03-20 2326# -- page 6; available at http://libinfo.org/newsr/newsr2574.djvu via 2327# http://libinfo.org/index.php?id=58564 -- on 1991-03-31 at 2:00 during 2328# transition to "summer" time: 2329# Republic of Georgia, Latvian SSR, Lithuanian SSR, SSR Moldova, 2330# Estonian SSR; Komi ASSR; Kaliningrad oblast; Nenets autonomous okrug 2331# were to move clocks 1 hour forward. 2332# Kazakh SSR (excluding Uralsk oblast); Republic of Kyrgyzstan, Tajik 2333# SSR; Andijan, Jizzakh, Namangan, Sirdarya, Tashkent, Fergana oblasts 2334# of the Uzbek SSR were to move clocks 1 hour backwards. 2335# Other territories were to not move clocks. 2336# When the "summer" time would end on 1991-09-29, clocks were to be 2337# moved 1 hour backwards on the territory of the USSR excluding 2338# Kazakhstan, Kirghizia, Uzbekistan, Turkmenia, Tajikistan. 2339# 2340# Apparently there were last minute changes. Apparently Kazakh act No. 170 2341# was one of such changes. 2342# 2343# https://ru.wikipedia.org/wiki/Декретное_время 2344# claims that Sovetskaya Rossiya newspaper on 1991-03-29 published that 2345# Nenets autonomous okrug, Komi and Kazakhstan (excluding Uralsk oblast) 2346# were to not move clocks and Uralsk oblast was to move clocks 2347# forward; on 1991-09-29 Kazakhstan was to move clocks backwards. 2348# (Probably there were changes even after that publication. There is an 2349# article claiming that Kaliningrad oblast decided on 1991-03-29 to not 2350# move clocks.) 2351# 2352# This implies that on 1991-03-31 Asia/Oral remained on +04/+05 while 2353# the rest of Kazakhstan switched from +06/+07 to +05/06 or from +05/06 2354# to +04/+05. It's unclear how Qyzylorda oblast moved into the fifth 2355# time belt. (By switching from +04/+05 to +05/+06 on 1991-09-29?) ... 2356# 2357# 1. Act of the Cabinet of Ministers of the Republic of Kazakhstan 2358# from 1992-01-13 No. 28 2359# http://adilet.zan.kz/rus/docs/P920000028_ 2360# (text includes modification from the 1996 act) 2361# introduced new rules for calculation of time, mirroring Russian 2362# 1992-01-08 act. It specified that time would be calculated 2363# according to time belts plus extra hour ("decree time"), moved clocks 2364# on the whole territory of Kazakhstan 1 hour forward on 1992-01-19 at 2365# 2:00, specified DST rules. It acknowledged that Kazakhstan was 2366# located in the fourth and the fifth time belts and specified the 2367# border between them to be located east of Qostanay and Aktyubinsk 2368# oblasts (notably including Turgai and Qyzylorda oblasts into the fifth 2369# time belt). 2370# 2371# This means switch on 1992-01-19 at 2:00 from +04/+05 to +05/+06 for 2372# Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyraū and Qostanay oblasts; from 2373# +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk).... 2374# 2375# 2. Act of the Cabinet of Ministers of the Republic of Kazakhstan 2376# from 1992-03-27 No. 284 2377# http://adilet.zan.kz/rus/docs/P920000284_ 2378# cancels extra hour ("decree time") for Uralsk and Qyzylorda oblasts 2379# since the last Sunday of March 1992, while keeping them in the fourth 2380# and the fifth time belts respectively. 2381# 2382# 3. Order of the Prime Minister of the Republic of Kazakhstan 2383# from 1994-09-23 No. 384 2384# http://adilet.zan.kz/rus/docs/R940000384_ 2385# cancels the extra hour ("decree time") on the territory of Mangghystaū 2386# oblast since the last Sunday of September 1994 (saying that time on 2387# the territory would correspond to the third time belt as a 2388# result).... 2389# 2390# 4. Act of the Government of the Republic of Kazakhstan 2391# from 1996-05-08 No. 575 2392# http://adilet.zan.kz/rus/docs/P960000575_ 2393# amends the 1992-01-13 act to end summer time in October instead 2394# of September, mirroring identical Russian change from 1996-04-23 act. 2395# 2396# 5. Act of the Government of the Republic of Kazakhstan 2397# from 1999-03-26 No. 305 2398# http://adilet.zan.kz/rus/docs/P990000305_ 2399# cancels the extra hour ("decree time") for Atyraū oblast since the 2400# last Sunday of March 1999 while retaining the oblast in the fourth 2401# time belt. 2402# 2403# This means change from +05/+06 to +04/+05.... 2404# 2405# 6. Act of the Government of the Republic of Kazakhstan 2406# from 2000-11-23 No. 1749 2407# http://adilet.zan.kz/rus/archive/docs/P000001749_/23.11.2000 2408# replaces the previous five documents. 2409# 2410# The only changes I noticed are in definition of the border between the 2411# fourth and the fifth time belts. They account for changes in spelling 2412# and administrative division (splitting of Turgai oblast in 1997 2413# probably changed time in territories incorporated into Qostanay oblast 2414# (including Arkalyk) from +06/+07 to +05/+06) and move Qyzylorda oblast 2415# from being in the fifth time belt and not using decree time into the 2416# fourth time belt (no change in practice). 2417# 2418# 7. Act of the Government of the Republic of Kazakhstan 2419# from 2003-12-29 No. 1342 2420# http://adilet.zan.kz/rus/docs/P030001342_ 2421# modified the 2000-11-23 act. No relevant changes, apparently. 2422# 2423# 8. Act of the Government of the Republic of Kazakhstan 2424# from 2004-07-20 No. 775 2425# http://adilet.zan.kz/rus/archive/docs/P040000775_/20.07.2004 2426# modified the 2000-11-23 act to move Qostanay and Qyzylorda oblasts into 2427# the fifth time belt and add Aktobe oblast to the list of regions not 2428# using extra hour ("decree time"), leaving Kazakhstan with only 2 time 2429# zones (+04/+05 and +06/+07). The changes were to be implemented 2430# during DST transitions in 2004 and 2005 but the acts got radically 2431# amended before implementation happened. 2432# 2433# 9. Act of the Government of the Republic of Kazakhstan 2434# from 2004-09-15 No. 1059 2435# http://adilet.zan.kz/rus/docs/P040001059_ 2436# modified the 2000-11-23 act to remove exceptions from the "decree time" 2437# (leaving Kazakhstan in +05/+06 and +06/+07 zones), amended the 2438# 2004-07-20 act to implement changes for Atyraū, West Kazakhstan, 2439# Qostanay, Qyzylorda and Mangghystaū oblasts by not moving clocks 2440# during the 2004 transition to "winter" time. 2441# 2442# This means transition from +04/+05 to +05/+06 for Atyraū oblast (no 2443# zone currently), Asia/Oral, Asia/Aqtau and transition from +05/+06 to 2444# +06/+07 for Qostanay oblast (Qostanay and Arkalyk, no zones currently) 2445# and Asia/Qyzylorda on 2004-10-31 at 3:00.... 2446# 2447# 10. Act of the Government of the Republic of Kazakhstan 2448# from 2005-03-15 No. 231 2449# http://adilet.zan.kz/rus/docs/P050000231_ 2450# removes DST provisions from the 2000-11-23 act, removes most of the 2451# (already implemented) provisions from the 2004-07-20 and 2004-09-15 2452# acts, comes into effect 10 days after official publication. 2453# The only practical effect seems to be the abolition of the summer 2454# time. 2455# 2456# Unamended version of the act of the Government of the Russian Federation 2457# No. 23 from 1992-01-08 [See 'europe' file for details]. 2458# Kazakh 1992-01-13 act appears to provide the same rules and 1992-03-27 2459# act was to be enacted on the last Sunday of March 1992. 2460 2461# From Stepan Golosunov (2016-11-08): 2462# Turgai reorganization should affect only southern part of Qostanay 2463# oblast. Which should probably be separated into Asia/Arkalyk zone. 2464# (There were also 1970, 1988 and 1990 Turgai oblast reorganizations 2465# according to wikipedia.) 2466# 2467# [For Qostanay] http://www.ng.kz/gazeta/195/hranit/ 2468# suggests that clocks were to be moved 40 minutes backwards on 2469# 1920-01-01 to the fourth time belt. But I do not understand 2470# how that could happen.... 2471# 2472# [For Atyrau and Oral] 1919 decree 2473# (http://www.worldtimezone.com/dst_news/dst_news_russia-1919-02-08.html 2474# and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in 2475# the third time belt (before 1930 this means +03). 2476 2477# From Alexander Konzurovski (2018-12-20): 2478# (Asia/Qyzylorda) is changing its time zone from UTC+6 to UTC+5 2479# effective December 21st, 2018.... 2480# http://adilet.zan.kz/rus/docs/P1800000817 (russian language). 2481 2482# Zone NAME STDOFF RULES FORMAT [UNTIL] 2483# 2484# Almaty (formerly Alma-Ata), representing most locations in Kazakhstan 2485# This includes KZ-AKM, KZ-ALA, KZ-ALM, KZ-AST, KZ-BAY, KZ-VOS, KZ-ZHA, 2486# KZ-KAR, KZ-SEV, KZ-PAV, and KZ-YUZ. 2487Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata 2488 5:00 - +05 1930 Jun 21 2489 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 2490 5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s 2491 6:00 RussiaAsia +06/+07 2004 Oct 31 2:00s 2492 6:00 - +06 2493# Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY) 2494Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2 2495 4:00 - +04 1930 Jun 21 2496 5:00 - +05 1981 Apr 1 2497 5:00 1:00 +06 1981 Oct 1 2498 6:00 - +06 1982 Apr 1 2499 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2500 4:00 RussiaAsia +04/+05 1991 Sep 29 2:00s 2501 5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s 2502 6:00 RussiaAsia +06/+07 1992 Mar 29 2:00s 2503 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2504 6:00 - +06 2018 Dec 21 0:00 2505 5:00 - +05 2506# 2507# Qostanay (aka Kostanay, Kustanay) (KZ-KUS) 2508# The 1991/2 rules are unclear partly because of the 1997 Turgai 2509# reorganization. 2510Zone Asia/Qostanay 4:14:28 - LMT 1924 May 2 2511 4:00 - +04 1930 Jun 21 2512 5:00 - +05 1981 Apr 1 2513 5:00 1:00 +06 1981 Oct 1 2514 6:00 - +06 1982 Apr 1 2515 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2516 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2517 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2518 6:00 - +06 2519 2520# Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT) 2521Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2 2522 4:00 - +04 1930 Jun 21 2523 5:00 - +05 1981 Apr 1 2524 5:00 1:00 +06 1981 Oct 1 2525 6:00 - +06 1982 Apr 1 2526 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2527 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2528 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2529 5:00 - +05 2530# Mangghystaū (KZ-MAN) 2531# Aqtau was not founded until 1963, but it represents an inhabited region, 2532# so include timestamps before 1963. 2533Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2 2534 4:00 - +04 1930 Jun 21 2535 5:00 - +05 1981 Oct 1 2536 6:00 - +06 1982 Apr 1 2537 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2538 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2539 5:00 RussiaAsia +05/+06 1994 Sep 25 2:00s 2540 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2541 5:00 - +05 2542# Atyraū (KZ-ATY) is like Mangghystaū except it switched from 2543# +04/+05 to +05/+06 in spring 1999, not fall 1994. 2544Zone Asia/Atyrau 3:27:44 - LMT 1924 May 2 2545 3:00 - +03 1930 Jun 21 2546 5:00 - +05 1981 Oct 1 2547 6:00 - +06 1982 Apr 1 2548 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2549 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2550 5:00 RussiaAsia +05/+06 1999 Mar 28 2:00s 2551 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2552 5:00 - +05 2553# West Kazakhstan (KZ-ZAP) 2554# From Paul Eggert (2016-03-18): 2555# The 1989 transition is from USSR act No. 227 (1989-03-14). 2556Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk 2557 3:00 - +03 1930 Jun 21 2558 5:00 - +05 1981 Apr 1 2559 5:00 1:00 +06 1981 Oct 1 2560 6:00 - +06 1982 Apr 1 2561 5:00 RussiaAsia +05/+06 1989 Mar 26 2:00s 2562 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2563 5:00 RussiaAsia +05/+06 1992 Mar 29 2:00s 2564 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2565 5:00 - +05 2566 2567# Kyrgyzstan (Kirgizstan) 2568# Transitions through 1991 are from Shanks & Pottenger. 2569 2570# From Paul Eggert (2005-08-15): 2571# According to an article dated today in the Kyrgyzstan Development Gateway 2572# http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml 2573# Kyrgyzstan is canceling the daylight saving time system. I take the article 2574# to mean that they will leave their clocks at 6 hours ahead of UTC. 2575# From Malik Abdugaliev (2005-09-21): 2576# Our government cancels daylight saving time 6th of August 2005. 2577# From 2005-08-12 our GMT-offset is +6, w/o any daylight saving. 2578 2579# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2580Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 - 2581Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 - 2582Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 - 2583Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 - 2584# Zone NAME STDOFF RULES FORMAT [UNTIL] 2585Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2 2586 5:00 - +05 1930 Jun 21 2587 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 2588 5:00 RussiaAsia +05/+06 1991 Aug 31 2:00 2589 5:00 Kyrgyz +05/+06 2005 Aug 12 2590 6:00 - +06 2591 2592############################################################################### 2593 2594# Korea (North and South) 2595 2596# From Annie I. Bang (2006-07-10): 2597# http://www.koreaherald.com/view.php?ud=200607100012 2598# Korea ran a daylight saving program from 1949-61 but stopped it 2599# during the 1950-53 Korean War. The system was temporarily enforced 2600# between 1987 and 1988 ... 2601 2602# From Sanghyuk Jung (2014-10-29): 2603# https://mm.icann.org/pipermail/tz/2014-October/021830.html 2604# According to the Korean Wikipedia 2605# https://ko.wikipedia.org/wiki/한국_표준시 2606# [oldid=12896437 2014-09-04 08:03 UTC] 2607# DST in Republic of Korea was as follows.... And I checked old 2608# newspapers in Korean, all articles correspond with data in Wikipedia. 2609# For example, the article in 1948 (Korean Language) proved that DST 2610# started at June 1 in that year. For another example, the article in 2611# 1988 said that DST started at 2:00 AM in that year. 2612 2613# From Phake Nick (2018-10-27): 2614# 1. According to official announcement from Korean government, the DST end 2615# date in South Korea should be 2616# 1955-09-08 without specifying time 2617# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027977557 2618# 1956-09-29 without specifying time 2619# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027978341 2620# 1957-09-21 24 o'clock 2621# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027979690#3 2622# 1958-09-20 24 o'clock 2623# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027981189 2624# 1959-09-19 24 o'clock 2625# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027982974#2 2626# 1960-09-17 24 o'clock 2627# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0028044104 2628# ... 2629# 2.... https://namu.wiki/w/대한민국%20표준시 ... [says] 2630# when Korea was using GMT+8:30 as standard time, the international 2631# aviation/marine/meteorological industry in the country refused to 2632# follow and continued to use GMT+9:00 for interoperability. 2633 2634 2635# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2636Rule ROK 1948 only - Jun 1 0:00 1:00 D 2637Rule ROK 1948 only - Sep 12 24:00 0 S 2638Rule ROK 1949 only - Apr 3 0:00 1:00 D 2639Rule ROK 1949 1951 - Sep Sat>=7 24:00 0 S 2640Rule ROK 1950 only - Apr 1 0:00 1:00 D 2641Rule ROK 1951 only - May 6 0:00 1:00 D 2642Rule ROK 1955 only - May 5 0:00 1:00 D 2643Rule ROK 1955 only - Sep 8 24:00 0 S 2644Rule ROK 1956 only - May 20 0:00 1:00 D 2645Rule ROK 1956 only - Sep 29 24:00 0 S 2646Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D 2647Rule ROK 1957 1960 - Sep Sat>=17 24:00 0 S 2648Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D 2649Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S 2650 2651# From Paul Eggert (2016-08-23): 2652# The Korean Wikipedia entry gives the following sources for UT offsets: 2653# 2654# 1908: Official Journal Article No. 3994 (decree No. 5) 2655# 1912: Governor-General of Korea Official Gazette Issue No. 367 2656# (Announcement No. 338) 2657# 1954: Presidential Decree No. 876 (1954-03-17) 2658# 1961: Law No. 676 (1961-08-07) 2659# 2660# (Another source "1987: Law No. 3919 (1986-12-31)" was in the 2014-10-30 2661# edition of the Korean Wikipedia entry.) 2662# 2663# I guessed that time zone abbreviations through 1945 followed the same 2664# rules as discussed under Taiwan, with nominal switches from JST to KST 2665# when the respective cities were taken over by the Allies after WWII. 2666# 2667# For Pyongyang, guess no changes from World War II until 2015, as we 2668# have no information otherwise. 2669 2670# From Steffen Thorsen (2015-08-07): 2671# According to many news sources, North Korea is going to change to 2672# the 8:30 time zone on August 15, one example: 2673# http://www.bbc.com/news/world-asia-33815049 2674# 2675# From Paul Eggert (2015-08-15): 2676# Bells rang out midnight (00:00) Friday as part of the celebrations. See: 2677# Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time' 2678# http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html 2679# There is no common English-language abbreviation for this time zone. 2680# Use KST, as that's what we already use for 1954-1961 in ROK. 2681 2682# From Kang Seonghoon (2018-04-29): 2683# North Korea will revert its time zone from UTC+8:30 (PYT; Pyongyang 2684# Time) back to UTC+9 (KST; Korea Standard Time). 2685# 2686# From Seo Sanghyeon (2018-04-30): 2687# Rodong Sinmun 2018-04-30 announced Pyongyang Time transition plan. 2688# https://www.nknews.org/kcna/wp-content/uploads/sites/5/2018/04/rodong-2018-04-30.pdf 2689# ... the transition date is 2018-05-05 ... Citation should be Decree 2690# No. 2232 of April 30, 2018, of the Presidium of the Supreme People's 2691# Assembly, as published in Rodong Sinmun. 2692# From Tim Parenti (2018-04-29): 2693# It appears to be the front page story at the top in the right-most column. 2694# 2695# From Paul Eggert (2018-05-04): 2696# The BBC reported that the transition was from 23:30 to 24:00 today. 2697# https://www.bbc.com/news/world-asia-44010705 2698 2699# Zone NAME STDOFF RULES FORMAT [UNTIL] 2700Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 2701 8:30 - KST 1912 Jan 1 2702 9:00 - JST 1945 Sep 8 2703 9:00 ROK K%sT 1954 Mar 21 2704 8:30 ROK K%sT 1961 Aug 10 2705 9:00 ROK K%sT 2706Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 2707 8:30 - KST 1912 Jan 1 2708 9:00 - JST 1945 Aug 24 2709 9:00 - KST 2015 Aug 15 00:00 2710 8:30 - KST 2018 May 4 23:30 2711 9:00 - KST 2712 2713# Kuwait 2714# Zone NAME STDOFF RULES FORMAT [UNTIL] 2715Zone Asia/Kuwait 3:11:56 - LMT 1950 2716 3:00 - +03 2717 2718# Laos 2719# Zone NAME STDOFF RULES FORMAT [UNTIL] 2720Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1 2721 7:06:30 - PLMT 1911 May 1 2722 7:00 - +07 1942 Dec 31 23:00 2723 8:00 - +08 1945 Mar 14 23:00 2724 9:00 - +09 1945 Sep 2 2725 7:00 - +07 1947 Apr 1 2726 8:00 - +08 1955 Apr 15 2727 7:00 - +07 2728 2729# Lebanon 2730# 2731# From Saadallah Itani (2023-03-23): 2732# Lebanon ... announced today delay of Spring forward from March 25 to April 20. 2733# 2734# From Paul Eggert (2023-03-27): 2735# This announcement was by the Lebanese caretaker prime minister Najib Mikati. 2736# https://www.mtv.com.lb/en/News/Local/1352516/lebanon-postpones-daylight-saving-time-adoption 2737# A video was later leaked to the media of parliament speaker Nabih Berri 2738# asking Mikati to postpone DST to aid observance of Ramadan, Mikati objecting 2739# that this would cause problems such as scheduling airline flights, to which 2740# Berri interjected, "What flights?" 2741# 2742# The change was controversial and led to a partly-sectarian divide. 2743# Many Lebanese institutions, including the education ministry, the Maronite 2744# church, and two news channels LCBI and MTV, ignored the announcement and 2745# went ahead with the long-scheduled spring-forward on March 25/26, some 2746# arguing that the prime minister had not followed the law because the change 2747# had not been approved by the cabinet. Google went with the announcement; 2748# Apple ignored it. At least one bank followed the announcement for its doors, 2749# but ignored the announcement in internal computer systems. 2750# Beirut international airport listed two times for each departure. 2751# Dan Azzi wrote "My view is that this whole thing is a Dumb and Dumber movie." 2752# Eventually the prime minister backed down, said the cabinet had decided to 2753# stick with its 1998 decision, and that DST would begin midnight March 29/30. 2754# https://www.nna-leb.gov.lb/en/miscellaneous/604093/lebanon-has-two-times-of-day-amid-daylight-savings 2755# https://www.cnbc.com/2023/03/27/lebanon-in-two-different-time-zones-as-government-disagrees-on-daylight-savings.html 2756# 2757# Although we could model the chaos with two Zones, that would likely cause 2758# more trouble than it would cure. Since so many manual clocks and 2759# computer-based timestamps ignored the announcement, stick with official 2760# cabinet resolutions in the data while recording the prime minister's 2761# announcement as a comment. This is how we treated a similar situation in 2762# Rio de Janeiro in spring 1993. 2763# 2764# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2765Rule Lebanon 1920 only - Mar 28 0:00 1:00 S 2766Rule Lebanon 1920 only - Oct 25 0:00 0 - 2767Rule Lebanon 1921 only - Apr 3 0:00 1:00 S 2768Rule Lebanon 1921 only - Oct 3 0:00 0 - 2769Rule Lebanon 1922 only - Mar 26 0:00 1:00 S 2770Rule Lebanon 1922 only - Oct 8 0:00 0 - 2771Rule Lebanon 1923 only - Apr 22 0:00 1:00 S 2772Rule Lebanon 1923 only - Sep 16 0:00 0 - 2773Rule Lebanon 1957 1961 - May 1 0:00 1:00 S 2774Rule Lebanon 1957 1961 - Oct 1 0:00 0 - 2775Rule Lebanon 1972 only - Jun 22 0:00 1:00 S 2776Rule Lebanon 1972 1977 - Oct 1 0:00 0 - 2777Rule Lebanon 1973 1977 - May 1 0:00 1:00 S 2778Rule Lebanon 1978 only - Apr 30 0:00 1:00 S 2779Rule Lebanon 1978 only - Sep 30 0:00 0 - 2780Rule Lebanon 1984 1987 - May 1 0:00 1:00 S 2781Rule Lebanon 1984 1991 - Oct 16 0:00 0 - 2782Rule Lebanon 1988 only - Jun 1 0:00 1:00 S 2783Rule Lebanon 1989 only - May 10 0:00 1:00 S 2784Rule Lebanon 1990 1992 - May 1 0:00 1:00 S 2785Rule Lebanon 1992 only - Oct 4 0:00 0 - 2786Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S 2787Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 - 2788Rule Lebanon 1999 max - Oct lastSun 0:00 0 - 2789# This one-time rule, announced by the prime minister first for April 21 2790# then for March 30, is commented out for reasons described above. 2791#Rule Lebanon 2023 only - Mar 30 0:00 1:00 S 2792 2793# Zone NAME STDOFF RULES FORMAT [UNTIL] 2794Zone Asia/Beirut 2:22:00 - LMT 1880 2795 2:00 Lebanon EE%sT 2796 2797# Malaysia (eastern) 2798# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2799Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 - 2800Rule NBorneo 1935 1941 - Dec 14 0:00 0 - 2801# 2802# Peninsular Malaysia 2803# Zone NAME STDOFF RULES FORMAT [UNTIL] 2804Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 2805 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 2806 7:00 - +07 1933 Jan 1 2807 7:00 0:20 +0720 1936 Jan 1 2808 7:20 - +0720 1941 Sep 1 2809 7:30 - +0730 1942 Feb 16 2810 9:00 - +09 1945 Sep 12 2811 7:30 - +0730 1981 Dec 31 16:00u 2812 8:00 - +08 2813 2814# 2815# Sabah & Sarawak 2816# From Paul Eggert (2014-08-12): 2817# The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 2818# and 1982 transition dates are from Mok Ly Yng. 2819# Zone NAME STDOFF RULES FORMAT [UNTIL] 2820Zone Asia/Kuching 7:21:20 - LMT 1926 Mar 2821 7:30 - +0730 1933 2822 8:00 NBorneo +08/+0820 1942 Feb 16 2823 9:00 - +09 1945 Sep 12 2824 8:00 - +08 2825 2826# Maldives 2827# Zone NAME STDOFF RULES FORMAT [UNTIL] 2828Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé 2829 4:54:00 - MMT 1960 # Malé Mean Time 2830 5:00 - +05 2831 2832# Mongolia 2833 2834# Shanks & Pottenger say that Mongolia has three time zones, but 2835# The USNO (1995-12-21) and the CIA map Standard Time Zones of the World 2836# (2005-03) both say that it has just one. 2837 2838# From Oscar van Vlijmen (1999-12-11): 2839# General Information Mongolia 2840# <http://www.mongoliatourism.gov.mn/general.htm> (1999-09) 2841# "Time: Mongolia has two time zones. Three westernmost provinces of 2842# Bayan-Ölgii, Uvs, and Hovd are one hour earlier than the capital city, and 2843# the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus 2844# eight hours." 2845 2846# From Rives McDow (1999-12-13): 2847# Mongolia discontinued the use of daylight savings time in 1999; 1998 2848# being the last year it was implemented. The dates of implementation I am 2849# unsure of, but most probably it was similar to Russia, except for the time 2850# of implementation may have been different.... 2851# Some maps in the past have indicated that there was an additional time 2852# zone in the eastern part of Mongolia, including the provinces of Dornod, 2853# Sükhbaatar, and possibly Khentii. 2854 2855# From Paul Eggert (1999-12-15): 2856# Naming and spelling is tricky in Mongolia. 2857# We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone; 2858# the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us, 2859# and sometimes Jirgalanta (with variant spellings), but the name Hovd 2860# is good enough for our purposes. 2861 2862# From Rives McDow (2001-05-13): 2863# In addition to Mongolia starting daylight savings as reported earlier 2864# (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28), 2865# there are three time zones. 2866# 2867# Provinces [at 7:00]: Bayan-Ölgii, Uvs, Khovd, Zavkhan, Govi-Altai 2868# Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv, 2869# Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi 2870# Provinces [at 9:00]: Dornod, Sükhbaatar 2871# 2872# [The province of Selenge is omitted from the above lists.] 2873 2874# From Ganbold Ts., Ulaanbaatar (2004-04-17): 2875# Daylight saving occurs at 02:00 local time last Saturday of March. 2876# It will change back to normal at 02:00 local time last Saturday of 2877# September.... As I remember this rule was changed in 2001. 2878# 2879# From Paul Eggert (2004-04-17): 2880# For now, assume Rives McDow's informant got confused about Friday vs 2881# Saturday, and that his 2001 dates should have 1 added to them. 2882 2883# From Paul Eggert (2005-07-26): 2884# We have wildly conflicting information about Mongolia's time zones. 2885# Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says 2886# there is only one time zone and that DST is observed, citing Microsoft 2887# Windows XP as the source. Risto Nykänen (2005-05-16) reports that 2888# travelmongolia.org says there are two time zones (UT +07, +08) with no DST. 2889# Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in 2890# Washington, DC says there are two time zones, with DST observed. 2891# He also found 2892# http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1& 2893# which also says that there is DST, and which has a comment by "Toddius" 2894# (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones. 2895# The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT 2896# and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT. 2897# The SUKH timezone is new this year, it is one of the few things the 2898# parliament passed during the tumultuous winter session." 2899# For now, let's ignore this information, until we have more confirmation. 2900 2901# From Ganbold Ts. (2007-02-26): 2902# Parliament of Mongolia has just changed the daylight-saving rule in February. 2903# They decided not to adopt daylight-saving time.... 2904# http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742 2905 2906# From Deborah Goldsmith (2008-03-30): 2907# We received a bug report claiming that the tz database UTC offset for 2908# Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT 2909# +08:00 instead. Different sources appear to disagree with the tz 2910# database on this, e.g.: 2911# 2912# https://www.timeanddate.com/worldclock/city.html?n=1026 2913# http://www.worldtimeserver.com/current_time_in_MN.aspx 2914# 2915# both say GMT+08:00. 2916 2917# From Steffen Thorsen (2008-03-31): 2918# eznis airways, which operates several domestic flights, has a flight 2919# schedule here: 2920# http://www.eznis.com/Container.jsp?id=112 2921# (click the English flag for English) 2922# 2923# There it appears that flights between Choibalsan and Ulaanbaatar arrive 2924# about 1:35 - 1:50 hours later in local clock time, no matter the 2925# direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern 2926# direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are 2927# in different time zones (like we know about), while Choibalsan and 2928# Ulaanbaatar are in the same time zone (correction needed). 2929 2930# From Arthur David Olson (2008-05-19): 2931# Assume that Choibalsan is indeed offset by 8:00. 2932# XXX--in the absence of better information, assume that transition 2933# was at the start of 2008-03-31 (the day of Steffen Thorsen's report); 2934# this is almost surely wrong. 2935 2936# From Ganbold Tsagaankhuu (2015-03-10): 2937# It seems like yesterday Mongolian Government meeting has concluded to use 2938# daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of 2939# March 2015, daylight saving time starts. And 00:00AM of last Saturday of 2940# September daylight saving time ends. Source: 2941# http://zasag.mn/news/view/8969 2942 2943# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 2944Rule Mongol 1983 1984 - Apr 1 0:00 1:00 - 2945Rule Mongol 1983 only - Oct 1 0:00 0 - 2946# Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00, 2947# but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM 2948# (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998. 2949# 2950# Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches 2951# in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place 2952# at 02:00 standard time, not at 00:00 local time as in the rest of 2953# the country. That would be odd, and possibly is a result of their 2954# correction of 02:00 (in the previous edition) not being done correctly 2955# in the latest edition; so ignore it for now. 2956 2957# From Ganbold Tsagaankhuu (2017-02-09): 2958# Mongolian Government meeting has concluded today to cancel daylight 2959# saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192 2960 2961Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 - 2962Rule Mongol 1984 1998 - Sep lastSun 0:00 0 - 2963# IATA SSIM (1999-09) says Mongolia no longer observes DST. 2964Rule Mongol 2001 only - Apr lastSat 2:00 1:00 - 2965Rule Mongol 2001 2006 - Sep lastSat 2:00 0 - 2966Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 - 2967Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 - 2968Rule Mongol 2015 2016 - Sep lastSat 0:00 0 - 2969 2970# Zone NAME STDOFF RULES FORMAT [UNTIL] 2971# Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta 2972Zone Asia/Hovd 6:06:36 - LMT 1905 Aug 2973 6:00 - +06 1978 2974 7:00 Mongol +07/+08 2975# Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga 2976Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug 2977 7:00 - +07 1978 2978 8:00 Mongol +08/+09 2979# Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan, 2980# Choybalsan, Sanbejse, Tchoibalsan 2981Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug 2982 7:00 - +07 1978 2983 8:00 - +08 1983 Apr 2984 9:00 Mongol +09/+10 2008 Mar 31 2985 8:00 Mongol +08/+09 2986 2987# Nepal 2988# Zone NAME STDOFF RULES FORMAT [UNTIL] 2989Zone Asia/Kathmandu 5:41:16 - LMT 1920 2990 5:30 - +0530 1986 2991 5:45 - +0545 2992 2993# Oman 2994# Zone NAME STDOFF RULES FORMAT [UNTIL] 2995Zone Asia/Muscat 3:54:24 - LMT 1920 2996 4:00 - +04 2997 2998# Pakistan 2999 3000# From Rives McDow (2002-03-13): 3001# I have been advised that Pakistan has decided to adopt dst on a 3002# TRIAL basis for one year, starting 00:01 local time on April 7, 2002 3003# and ending at 00:01 local time October 6, 2002. This is what I was 3004# told, but I believe that the actual time of change may be 00:00; the 3005# 00:01 was to make it clear which day it was on. 3006 3007# From Paul Eggert (2002-03-15): 3008# Jesper Nørgaard found this URL: 3009# http://www.pak.gov.pk/public/news/app/app06_dec.htm 3010# (dated 2001-12-06) which says that the Cabinet adopted a scheme "to 3011# advance the clocks by one hour on the night between the first 3012# Saturday and Sunday of April and revert to the original position on 3013# 15th October each year". This agrees with McDow's 04-07 at 00:00, 3014# but disagrees about the October transition, and makes it sound like 3015# it's not on a trial basis. Also, the "between the first Saturday 3016# and Sunday of April" phrase, if taken literally, means that the 3017# transition takes place at 00:00 on the first Sunday on or after 04-02. 3018 3019# From Paul Eggert (2003-02-09): 3020# DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05 3021# that 2002 DST ended that day at midnight. Go with McDow for now. 3022 3023# From Steffen Thorsen (2003-03-14): 3024# According to http://www.dawn.com/2003/03/07/top15.htm 3025# there will be no DST in Pakistan this year: 3026# 3027# ISLAMABAD, March 6: Information and Media Development Minister Sheikh 3028# Rashid Ahmed on Thursday said the cabinet had reversed a previous 3029# decision to advance clocks by one hour in summer and put them back by 3030# one hour in winter with the aim of saving light hours and energy. 3031# 3032# The minister told a news conference that the experiment had rather 3033# shown 8 per cent higher consumption of electricity. 3034 3035# From Alex Krivenyshev (2008-05-15): 3036# 3037# Here is an article that Pakistan plan to introduce Daylight Saving Time 3038# on June 1, 2008 for 3 months. 3039# 3040# "... The federal cabinet on Wednesday announced a new conservation plan to 3041# help reduce load shedding by approving the closure of commercial centres at 3042# 9pm and moving clocks forward by one hour for the next three months. ...." 3043# 3044# http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html 3045# http://www.dailytimes.com.pk/default.asp?page=2008\05\15\story_15-5-2008_pg1_4 3046 3047# From Arthur David Olson (2008-05-19): 3048# XXX--midnight transitions is a guess; 2008 only is a guess. 3049 3050# From Alexander Krivenyshev (2008-08-28): 3051# Pakistan government has decided to keep the watches one-hour advanced 3052# for another 2 months - plan to return to Standard Time on October 31 3053# instead of August 31. 3054# 3055# http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html 3056# http://dailymailnews.com/200808/28/news/dmbrn03.html 3057 3058# From Alexander Krivenyshev (2009-04-08): 3059# Based on previous media reports that "... proposed plan to 3060# advance clocks by one hour from May 1 will cause disturbance 3061# to the working schedules rather than bringing discipline in 3062# official working." 3063# http://www.thenews.com.pk/daily_detail.asp?id=171280 3064# 3065# recent news that instead of May 2009 - Pakistan plan to 3066# introduce DST from April 15, 2009 3067# 3068# FYI: Associated Press Of Pakistan 3069# April 08, 2009 3070# Cabinet okays proposal to advance clocks by one hour from April 15 3071# http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1 3072# http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html 3073# 3074# .... 3075# The Federal Cabinet on Wednesday approved the proposal to 3076# advance clocks in the country by one hour from April 15 to 3077# conserve energy" 3078 3079# From Steffen Thorsen (2009-09-17): 3080# "The News International," Pakistan reports that: "The Federal 3081# Government has decided to restore the previous time by moving the 3082# clocks backward by one hour from October 1. A formal announcement to 3083# this effect will be made after the Prime Minister grants approval in 3084# this regard." 3085# http://www.thenews.com.pk/updates.asp?id=87168 3086 3087# From Alexander Krivenyshev (2009-09-28): 3088# According to Associated Press Of Pakistan, it is confirmed that 3089# Pakistan clocks across the country would be turned back by an hour from 3090# October 1, 2009. 3091# 3092# "Clocks to go back one hour from 1 Oct" 3093# http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=86715&Itemid=2 3094# http://www.worldtimezone.com/dst_news/dst_news_pakistan07.htm 3095# 3096# From Steffen Thorsen (2009-09-29): 3097# Now they seem to have changed their mind, November 1 is the new date: 3098# http://www.thenews.com.pk/top_story_detail.asp?Id=24742 3099# "The country's clocks will be reversed by one hour on November 1. 3100# Officials of Federal Ministry for Interior told this to Geo News on 3101# Monday." 3102# 3103# And more importantly, it seems that these dates will be kept every year: 3104# "It has now been decided that clocks will be wound forward by one hour 3105# on April 15 and reversed by an hour on November 1 every year without 3106# obtaining prior approval, the officials added." 3107# 3108# We have confirmed this year's end date with both with the Ministry of 3109# Water and Power and the Pakistan Electric Power Company: 3110# https://www.timeanddate.com/news/time/pakistan-ends-dst09.html 3111 3112# From Christoph Göhre (2009-10-01): 3113# [T]he German Consulate General in Karachi reported me today that Pakistan 3114# will go back to standard time on 1st of November. 3115 3116# From Steffen Thorsen (2010-03-26): 3117# Steffen Thorsen wrote: 3118# > On Thursday (2010-03-25) it was announced that DST would start in 3119# > Pakistan on 2010-04-01. 3120# > 3121# > Then today, the president said that they might have to revert the 3122# > decision if it is not supported by the parliament. So at the time 3123# > being, it seems unclear if DST will be actually observed or not - but 3124# > April 1 could be a more likely date than April 15. 3125# Now, it seems that the decision to not observe DST in final: 3126# 3127# "Govt Withdraws Plan To Advance Clocks" 3128# http://www.apakistannews.com/govt-withdraws-plan-to-advance-clocks-172041 3129# 3130# "People laud PM's announcement to end DST" 3131# http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=99374&Itemid=2 3132 3133# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 3134Rule Pakistan 2002 only - Apr Sun>=2 0:00 1:00 S 3135Rule Pakistan 2002 only - Oct Sun>=2 0:00 0 - 3136Rule Pakistan 2008 only - Jun 1 0:00 1:00 S 3137Rule Pakistan 2008 2009 - Nov 1 0:00 0 - 3138Rule Pakistan 2009 only - Apr 15 0:00 1:00 S 3139 3140# Zone NAME STDOFF RULES FORMAT [UNTIL] 3141Zone Asia/Karachi 4:28:12 - LMT 1907 3142 5:30 - +0530 1942 Sep 3143 5:30 1:00 +0630 1945 Oct 15 3144 5:30 - +0530 1951 Sep 30 3145 5:00 - +05 1971 Mar 26 3146 5:00 Pakistan PK%sT # Pakistan Time 3147 3148# Palestine 3149 3150# From Amos Shapir (1998-02-15): 3151# 3152# From 1917 until 1948-05-15, all of Palestine, including the parts now 3153# known as the Gaza Strip and the West Bank, was under British rule. 3154# Therefore the rules given for Israel for that period, apply there too... 3155# 3156# The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05 3157# (except a short occupation by Israel from 1956-11 till 1957-03, but no 3158# time zone was affected then). It was never formally annexed to Egypt, 3159# though. 3160# 3161# The rest of Palestine was under Jordanian rule at that time, formally 3162# annexed in 1950 as the West Bank (and the word "Trans" was dropped from 3163# the country's previous name of "the Hashemite Kingdom of the 3164# Trans-Jordan"). So the rules for Jordan for that time apply. Major 3165# towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and 3166# East Jerusalem. 3167# 3168# Both areas were occupied by Israel in June 1967, but not annexed (except 3169# for East Jerusalem). They were on Israel time since then; there might 3170# have been a Military Governor's order about time zones, but I'm not aware 3171# of any (such orders may have been issued semi-annually whenever summer 3172# time was in effect, but maybe the legal aspect of time was just neglected). 3173# 3174# The Palestinian Authority was established in 1993, and got hold of most 3175# towns in the West Bank and Gaza by 1995. I know that in order to 3176# demonstrate...independence, they have been switching to 3177# summer time and back on a different schedule than Israel's, but I don't 3178# know when this was started, or what algorithm is used (most likely the 3179# Jordanian one). 3180# 3181# To summarize, the table should probably look something like that: 3182# 3183# Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996- 3184# ------------+-----------+-----------+-----------+----------- 3185# Israel | Zion | Zion | Zion | Zion 3186# West bank | Zion | Jordan | Zion | Jordan 3187# Gaza | Zion | Egypt | Zion | Jordan 3188# 3189# I guess more info may be available from the PA's web page (if/when they 3190# have one). 3191 3192# From Paul Eggert (2006-03-22): 3193# Shanks & Pottenger write that Gaza did not observe DST until 1957, but go 3194# with Shapir and assume that it observed DST from 1940 through 1947, 3195# and that it used Jordanian rules starting in 1996. 3196# We don't yet need a separate entry for the West Bank, since 3197# the only differences between it and Gaza that we know about 3198# occurred before our cutoff date of 1970. 3199# However, as we get more information, we may need to add entries 3200# for parts of the West Bank as they transitioned from Israel's rules 3201# to Palestine's rules. 3202 3203# From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time, 3204# forwarded by Ephraim Silverberg: 3205# 3206# Despite the fact that Israel changed over to daylight savings time 3207# last week, the PLO Authority (PA) has decided not to turn its clocks 3208# one-hour forward at this time. As a sign of independence from Israeli rule, 3209# the PA has decided to implement DST in April. 3210 3211# From Paul Eggert (1999-09-20): 3212# Daoud Kuttab writes in Holiday havoc 3213# http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html 3214# (Jerusalem Post, 1999-04-22) that 3215# the Palestinian National Authority changed to DST on 1999-04-15. 3216# I vaguely recall that they switch back in October (sorry, forgot the source). 3217# For now, let's assume that the spring switch was at 24:00, 3218# and that they switch at 0:00 on the 3rd Fridays of April and October. 3219 3220# From Paul Eggert (2005-11-22): 3221# Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com. 3222 3223# From Steffen Thorsen (2005-11-23): 3224# A user from Gaza reported that Gaza made the change early because of 3225# the Ramadan. Next year Ramadan will be even earlier, so I think 3226# there is a good chance next year's end date will be around two weeks 3227# earlier - the same goes for Jordan. 3228 3229# From Steffen Thorsen (2006-08-17): 3230# I was informed by a user in Bethlehem that in Bethlehem it started the 3231# same day as Israel, and after checking with other users in the area, I 3232# was informed that they started DST one day after Israel. I was not 3233# able to find any authoritative sources at the time, nor details if 3234# Gaza changed as well, but presumed Gaza to follow the same rules as 3235# the West Bank. 3236 3237# From Steffen Thorsen (2006-09-26): 3238# according to the Palestine News Network (2006-09-19): 3239# http://english.pnn.ps/index.php?option=com_content&task=view&id=596&Itemid=5 3240# > The Council of Ministers announced that this year its winter schedule 3241# > will begin early, as of midnight Thursday. It is also time to turn 3242# > back the clocks for winter. Friday will begin an hour late this week. 3243# I guess it is likely that next year's date will be moved as well, 3244# because of the Ramadan. 3245 3246# From Jesper Nørgaard Welen (2007-09-18): 3247# According to Steffen Thorsen's web site the Gaza Strip and the rest of the 3248# Palestinian territories left DST early on 13.th. of September at 2:00. 3249 3250# From Paul Eggert (2007-09-20): 3251# My understanding is that Gaza and the West Bank disagree even over when 3252# the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit 3253# surprised if they agreed about DST. But for now, assume they agree. 3254# For lack of better information, predict that future changes will be 3255# the 2nd Thursday of September at 02:00. 3256 3257# From Alexander Krivenyshev (2008-08-28): 3258# Here is an article, that Mideast running on different clocks at Ramadan. 3259# 3260# Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while 3261# the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008). 3262# 3263# http://www.guardian.co.uk/world/feedarticle/7759001 3264# http://www.abcnews.go.com/International/wireStory?id=5676087 3265# http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html 3266 3267# From Alexander Krivenyshev (2009-03-26): 3268# According to the Palestine News Network (arabic.pnn.ps), Palestinian 3269# government decided to start Daylight Time on Thursday night March 3270# 26 and continue until the night of 27 September 2009. 3271# 3272# (in Arabic) 3273# http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850 3274# 3275# (English translation) 3276# http://www.worldtimezone.com/dst_news/dst_news_westbank01.html 3277 3278# From Steffen Thorsen (2009-08-31): 3279# Palestine's Council of Ministers announced that they will revert back to 3280# winter time on Friday, 2009-09-04. 3281# 3282# One news source: 3283# http://www.safa.ps/ara/?action=showdetail&seid=4158 3284# (Palestinian press agency, Arabic), 3285# Google translate: "Decided that the Palestinian government in Ramallah 3286# headed by Salam Fayyad, the start of work in time for the winter of 3287# 2009, starting on Friday approved the fourth delay Sept. clock sixty 3288# minutes per hour as of Friday morning." 3289# 3290# We are not sure if Gaza will do the same, last year they had a different 3291# end date, we will keep this page updated: 3292# https://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html 3293 3294# From Alexander Krivenyshev (2009-09-02): 3295# Seems that Gaza Strip will go back to Winter Time same date as West Bank. 3296# 3297# According to Palestinian Ministry Of Interior, West Bank and Gaza Strip plan 3298# to change time back to Standard time on September 4, 2009. 3299# 3300# "Winter time unite the West Bank and Gaza" 3301# (from Palestinian National Authority): 3302# http://www.moi.gov.ps/en/?page=633167343250594025&nid=11505 3303# http://www.worldtimezone.com/dst_news/dst_news_gazastrip02.html 3304 3305# From Alexander Krivenyshev (2010-03-19): 3306# According to Voice of Palestine DST will last for 191 days, from March 3307# 26, 2010 till "the last Sunday before the tenth day of Tishri 3308# (October), each year" (October 03, 2010?) 3309# 3310# http://palvoice.org/forums/showthread.php?t=245697 3311# (in Arabic) 3312# http://www.worldtimezone.com/dst_news/dst_news_westbank03.html 3313 3314# From Steffen Thorsen (2010-03-24): 3315# ...Ma'an News Agency reports that Hamas cabinet has decided it will 3316# start one day later, at 12:01am. Not sure if they really mean 12:01am or 3317# noon though: 3318# 3319# http://www.maannews.net/eng/ViewDetails.aspx?ID=271178 3320# (Ma'an News Agency) 3321# "At 12:01am Friday, clocks in Israel and the West Bank will change to 3322# 1:01am, while Gaza clocks will change at 12:01am Saturday morning." 3323 3324# From Steffen Thorsen (2010-08-11): 3325# According to several sources, including 3326# http://www.maannews.net/eng/ViewDetails.aspx?ID=306795 3327# the clocks were set back one hour at 2010-08-11 00:00:00 local time in 3328# Gaza and the West Bank. 3329# Some more background info: 3330# https://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html 3331 3332# From Steffen Thorsen (2011-08-26): 3333# Gaza and the West Bank did go back to standard time in the beginning of 3334# August, and will now enter daylight saving time again on 2011-08-30 3335# 00:00 (so two periods of DST in 2011). The pause was because of 3336# Ramadan. 3337# 3338# http://www.maannews.net/eng/ViewDetails.aspx?ID=416217 3339# Additional info: 3340# https://www.timeanddate.com/news/time/palestine-dst-2011.html 3341 3342# From Alexander Krivenyshev (2011-08-27): 3343# According to the article in The Jerusalem Post: 3344# "...Earlier this month, the Palestinian government in the West Bank decided to 3345# move to standard time for 30 days, during Ramadan. The Palestinians in the 3346# Gaza Strip accepted the change and also moved their clocks one hour back. 3347# The Hamas government said on Saturday that it won't observe summertime after 3348# the Muslim feast of Id al-Fitr, which begins on Tuesday..." 3349# ... 3350# https://www.jpost.com/MiddleEast/Article.aspx?id=235650 3351# http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html 3352# The rules for Egypt are stolen from the 'africa' file. 3353 3354# From Steffen Thorsen (2011-09-30): 3355# West Bank did end Daylight Saving Time this morning/midnight (2011-09-30 3356# 00:00). 3357# So West Bank and Gaza now have the same time again. 3358# 3359# Many sources, including: 3360# http://www.maannews.net/eng/ViewDetails.aspx?ID=424808 3361 3362# From Steffen Thorsen (2012-03-26): 3363# Palestinian news sources tell that both Gaza and West Bank will start DST 3364# on Friday (Thursday midnight, 2012-03-29 24:00). 3365# Some of many sources in Arabic: 3366# http://www.samanews.com/index.php?act=Show&id=122638 3367# 3368# http://safa.ps/details/news/74352/بدء-التوقيت-الصيفي-بالضفة-وغزة-ليلة-الجمعة.html 3369# 3370# Our brief summary: 3371# https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html 3372 3373# From Steffen Thorsen (2013-03-26): 3374# The following news sources tells that Palestine will "start daylight saving 3375# time from midnight on Friday, March 29, 2013" (translated). 3376# [These are in Arabic and are for Gaza and for Ramallah, respectively.] 3377# http://www.samanews.com/index.php?act=Show&id=154120 3378# http://safa.ps/details/news/99844/رام-الله-بدء-التوقيت-الصيفي-29-الجاري.html 3379 3380# From Steffen Thorsen (2013-09-24): 3381# The Gaza and West Bank are ending DST Thursday at midnight 3382# (2013-09-27 00:00:00) (one hour earlier than last year...). 3383# This source in English, says "that winter time will go into effect 3384# at midnight on Thursday in the West Bank and Gaza Strip": 3385# http://english.wafa.ps/index.php?action=detail&id=23246 3386# official source...: 3387# http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252 3388 3389# From Steffen Thorsen (2015-03-03): 3390# Sources such as http://www.alquds.com/news/article/view/id/548257 3391# and https://www.raya.ps/ar/news/890705.html say Palestine areas will 3392# start DST on 2015-03-28 00:00 which is one day later than expected. 3393# 3394# From Paul Eggert (2015-03-03): 3395# https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014 3396# says that the fall 2014 transition was Oct 23 at 24:00. 3397 3398# From Hannah Kreitem (2016-03-09): 3399# http://www.palestinecabinet.gov.ps/WebSite/ar/ViewDetails?ID=31728 3400# [Google translation]: "The Council also decided to start daylight 3401# saving in Palestine as of one o'clock on Saturday morning, 3402# 2016-03-26, to provide the clock 60 minutes ahead." 3403 3404# From Sharef Mustafa (2016-10-19): 3405# [T]he Palestinian cabinet decision (Mar 8th 2016) published on 3406# http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf 3407# states that summer time will end on Oct 29th at 01:00. 3408 3409# From Sharef Mustafa (2018-03-16): 3410# Palestine summer time will start on Mar 24th 2018 ... 3411# http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817 3412 3413# From Even Scharning (2019-03-23): 3414# http://pnn.ps/news/401130 3415# http://palweather.ps/ar/node/50136.html 3416# 3417# From Sharif Mustafa (2019-03-26): 3418# The Palestinian cabinet announced today that the switch to DST will 3419# be on Fri Mar 29th 2019 by advancing the clock by 60 minutes. 3420# http://palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e54e9ea1-50ee-4137-84df-0d6c78da259b 3421# 3422# From Even Scharning (2019-04-10): 3423# Our source in Palestine said it happened Friday 29 at 00:00 local time.... 3424 3425# From Sharef Mustafa (2019-10-18): 3426# Palestine summer time will end on midnight Oct 26th 2019 ... 3427# 3428# From Steffen Thorsen (2020-10-20): 3429# Some sources such as these say, and display on clocks, that DST ended at 3430# midnight last year... 3431# https://www.amad.ps/ar/post/320006 3432# 3433# From Tim Parenti (2020-10-20): 3434# The report of the Palestinian Cabinet meeting of 2019-10-14 confirms 3435# a decision on (translated): "The start of the winter time in Palestine, by 3436# delaying the clock by sixty minutes, starting from midnight on Friday / 3437# Saturday corresponding to 26/10/2019." 3438# http://www.palestinecabinet.gov.ps/portal/meeting/details/43948 3439 3440# From Sharef Mustafa (2020-10-20): 3441# As per the palestinian cabinet announcement yesterday , the day light saving 3442# shall [end] on Oct 24th 2020 at 01:00AM by delaying the clock by 60 minutes. 3443# http://www.palestinecabinet.gov.ps/portal/Meeting/Details/51584 3444 3445# From Pierre Cashon (2020-10-20): 3446# The summer time this year started on March 28 at 00:00. 3447# https://wafa.ps/ar_page.aspx?id=GveQNZa872839351758aGveQNZ 3448# http://www.palestinecabinet.gov.ps/portal/meeting/details/50284 3449# The winter time in 2015 started on October 23 at 01:00. 3450# https://wafa.ps/ar_page.aspx?id=CgpCdYa670694628582aCgpCdY 3451# http://www.palestinecabinet.gov.ps/portal/meeting/details/27583 3452 3453# From P Chan (2021-10-18): 3454# http://wafa.ps/Pages/Details/34701 3455# Palestine winter time will start from midnight 2021-10-29 (Thursday-Friday). 3456# 3457# From Heba Hemad, Palestine Ministry of Telecom & IT (2021-10-20): 3458# ... winter time will begin in Palestine from Friday 10-29, 01:00 AM 3459# by 60 minutes backwards. 3460# 3461# From Tim Parenti (2021-10-25), per Paul Eggert (2021-10-24): 3462# Guess future fall transitions at 01:00 on the Friday preceding October's 3463# last Sunday (i.e., Fri>=23), as this is more consistent with recent practice. 3464 3465# From Heba Hamad (2022-03-10): 3466# summer time will begin in Palestine from Sunday 03-27-2022, 00:00 AM. 3467 3468# From Heba Hamad (2022-08-30): 3469# winter time will begin in Palestine from Saturday 10-29, 02:00 AM by 3470# 60 minutes backwards. Also the state of Palestine adopted the summer 3471# and winter time for the years: 2023,2024,2025,2026 ... 3472# https://mm.icann.org/pipermail/tz/attachments/20220830/9f024566/Time-0001.pdf 3473# (2022-08-31): ... the Saturday before the last Sunday in March and October 3474# at 2:00 AM ,for the years from 2023 to 2026. 3475# (2022-09-05): https://mtit.pna.ps/Site/New/1453 3476 3477# From Heba Hamad (2023-03-22): 3478# ... summer time will begin in Palestine from Saturday 04-29-2023, 3479# 02:00 AM by 60 minutes forward. 3480# From Heba Hemad (2023-10-09): 3481# ... winter time will begin in Palestine from Saturday 10-28-2023, 3482# 02:00 AM by 60 minutes back. 3483# 3484# From Paul Eggert (2023-03-22): 3485# For now, guess that spring and fall transitions will normally 3486# continue to use 2022's rules, that during DST Palestine will switch 3487# to standard time at 02:00 the last Saturday before Ramadan and back 3488# to DST at 02:00 the first Saturday after Ramadan, and that 3489# if the normal spring-forward or fall-back transition occurs during 3490# Ramadan the former is delayed and the latter advanced. 3491# To implement this, I predicted Ramadan-oriented transition dates for 3492# 2023 through 2086 by running the following program under GNU Emacs 28.2, 3493# with the results integrated by hand into the table below. 3494# Predictions after 2086 are approximated without Ramadan. 3495# 3496# (let ((islamic-year 1444)) 3497# (require 'cal-islam) 3498# (while (< islamic-year 1510) 3499# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) 3500# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) 3501# (saturday 6)) 3502# (while (/= saturday (mod (setq a (1- a)) 7))) 3503# (while (/= saturday (mod b 7)) 3504# (setq b (1+ b))) 3505# (setq a (calendar-gregorian-from-absolute a)) 3506# (setq b (calendar-gregorian-from-absolute b)) 3507# (insert 3508# (format 3509# (concat "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t0\t-\n" 3510# "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t1:00\tS\n") 3511# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) 3512# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) 3513# (setq islamic-year (+ 1 islamic-year)))) 3514 3515# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 3516Rule EgyptAsia 1957 only - May 10 0:00 1:00 S 3517Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 - 3518Rule EgyptAsia 1958 only - May 1 0:00 1:00 S 3519Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S 3520Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 - 3521Rule EgyptAsia 1966 only - Oct 1 3:00 0 - 3522 3523Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S 3524Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 - 3525Rule Palestine 2004 only - Oct 1 1:00 0 - 3526Rule Palestine 2005 only - Oct 4 2:00 0 - 3527Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S 3528Rule Palestine 2006 only - Sep 22 0:00 0 - 3529Rule Palestine 2007 only - Sep 13 2:00 0 - 3530Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S 3531Rule Palestine 2008 only - Sep 1 0:00 0 - 3532Rule Palestine 2009 only - Sep 4 1:00 0 - 3533Rule Palestine 2010 only - Mar 26 0:00 1:00 S 3534Rule Palestine 2010 only - Aug 11 0:00 0 - 3535Rule Palestine 2011 only - Apr 1 0:01 1:00 S 3536Rule Palestine 2011 only - Aug 1 0:00 0 - 3537Rule Palestine 2011 only - Aug 30 0:00 1:00 S 3538Rule Palestine 2011 only - Sep 30 0:00 0 - 3539Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S 3540Rule Palestine 2012 only - Sep 21 1:00 0 - 3541Rule Palestine 2013 only - Sep 27 0:00 0 - 3542Rule Palestine 2014 only - Oct 24 0:00 0 - 3543Rule Palestine 2015 only - Mar 28 0:00 1:00 S 3544Rule Palestine 2015 only - Oct 23 1:00 0 - 3545Rule Palestine 2016 2018 - Mar Sat<=30 1:00 1:00 S 3546Rule Palestine 2016 2018 - Oct Sat<=30 1:00 0 - 3547Rule Palestine 2019 only - Mar 29 0:00 1:00 S 3548Rule Palestine 2019 only - Oct Sat<=30 0:00 0 - 3549Rule Palestine 2020 2021 - Mar Sat<=30 0:00 1:00 S 3550Rule Palestine 2020 only - Oct 24 1:00 0 - 3551Rule Palestine 2021 only - Oct 29 1:00 0 - 3552Rule Palestine 2022 only - Mar 27 0:00 1:00 S 3553Rule Palestine 2022 2035 - Oct Sat<=30 2:00 0 - 3554Rule Palestine 2023 only - Apr 29 2:00 1:00 S 3555Rule Palestine 2024 only - Apr 13 2:00 1:00 S 3556Rule Palestine 2025 only - Apr 5 2:00 1:00 S 3557Rule Palestine 2026 2054 - Mar Sat<=30 2:00 1:00 S 3558Rule Palestine 2036 only - Oct 18 2:00 0 - 3559Rule Palestine 2037 only - Oct 10 2:00 0 - 3560Rule Palestine 2038 only - Sep 25 2:00 0 - 3561Rule Palestine 2039 only - Sep 17 2:00 0 - 3562Rule Palestine 2039 only - Oct 22 2:00 1:00 S 3563Rule Palestine 2039 2067 - Oct Sat<=30 2:00 0 - 3564Rule Palestine 2040 only - Sep 1 2:00 0 - 3565Rule Palestine 2040 only - Oct 13 2:00 1:00 S 3566Rule Palestine 2041 only - Aug 24 2:00 0 - 3567Rule Palestine 2041 only - Sep 28 2:00 1:00 S 3568Rule Palestine 2042 only - Aug 16 2:00 0 - 3569Rule Palestine 2042 only - Sep 20 2:00 1:00 S 3570Rule Palestine 2043 only - Aug 1 2:00 0 - 3571Rule Palestine 2043 only - Sep 12 2:00 1:00 S 3572Rule Palestine 2044 only - Jul 23 2:00 0 - 3573Rule Palestine 2044 only - Aug 27 2:00 1:00 S 3574Rule Palestine 2045 only - Jul 15 2:00 0 - 3575Rule Palestine 2045 only - Aug 19 2:00 1:00 S 3576Rule Palestine 2046 only - Jun 30 2:00 0 - 3577Rule Palestine 2046 only - Aug 11 2:00 1:00 S 3578Rule Palestine 2047 only - Jun 22 2:00 0 - 3579Rule Palestine 2047 only - Jul 27 2:00 1:00 S 3580Rule Palestine 2048 only - Jun 6 2:00 0 - 3581Rule Palestine 2048 only - Jul 18 2:00 1:00 S 3582Rule Palestine 2049 only - May 29 2:00 0 - 3583Rule Palestine 2049 only - Jul 3 2:00 1:00 S 3584Rule Palestine 2050 only - May 21 2:00 0 - 3585Rule Palestine 2050 only - Jun 25 2:00 1:00 S 3586Rule Palestine 2051 only - May 6 2:00 0 - 3587Rule Palestine 2051 only - Jun 17 2:00 1:00 S 3588Rule Palestine 2052 only - Apr 27 2:00 0 - 3589Rule Palestine 2052 only - Jun 1 2:00 1:00 S 3590Rule Palestine 2053 only - Apr 12 2:00 0 - 3591Rule Palestine 2053 only - May 24 2:00 1:00 S 3592Rule Palestine 2054 only - Apr 4 2:00 0 - 3593Rule Palestine 2054 only - May 16 2:00 1:00 S 3594Rule Palestine 2055 only - May 1 2:00 1:00 S 3595Rule Palestine 2056 only - Apr 22 2:00 1:00 S 3596Rule Palestine 2057 only - Apr 7 2:00 1:00 S 3597Rule Palestine 2058 max - Mar Sat<=30 2:00 1:00 S 3598Rule Palestine 2068 only - Oct 20 2:00 0 - 3599Rule Palestine 2069 only - Oct 12 2:00 0 - 3600Rule Palestine 2070 only - Oct 4 2:00 0 - 3601Rule Palestine 2071 only - Sep 19 2:00 0 - 3602Rule Palestine 2072 only - Sep 10 2:00 0 - 3603Rule Palestine 2072 only - Oct 15 2:00 1:00 S 3604Rule Palestine 2072 max - Oct Sat<=30 2:00 0 - 3605Rule Palestine 2073 only - Sep 2 2:00 0 - 3606Rule Palestine 2073 only - Oct 7 2:00 1:00 S 3607Rule Palestine 2074 only - Aug 18 2:00 0 - 3608Rule Palestine 2074 only - Sep 29 2:00 1:00 S 3609Rule Palestine 2075 only - Aug 10 2:00 0 - 3610Rule Palestine 2075 only - Sep 14 2:00 1:00 S 3611Rule Palestine 2076 only - Jul 25 2:00 0 - 3612Rule Palestine 2076 only - Sep 5 2:00 1:00 S 3613Rule Palestine 2077 only - Jul 17 2:00 0 - 3614Rule Palestine 2077 only - Aug 28 2:00 1:00 S 3615Rule Palestine 2078 only - Jul 9 2:00 0 - 3616Rule Palestine 2078 only - Aug 13 2:00 1:00 S 3617Rule Palestine 2079 only - Jun 24 2:00 0 - 3618Rule Palestine 2079 only - Aug 5 2:00 1:00 S 3619Rule Palestine 2080 only - Jun 15 2:00 0 - 3620Rule Palestine 2080 only - Jul 20 2:00 1:00 S 3621Rule Palestine 2081 only - Jun 7 2:00 0 - 3622Rule Palestine 2081 only - Jul 12 2:00 1:00 S 3623Rule Palestine 2082 only - May 23 2:00 0 - 3624Rule Palestine 2082 only - Jul 4 2:00 1:00 S 3625Rule Palestine 2083 only - May 15 2:00 0 - 3626Rule Palestine 2083 only - Jun 19 2:00 1:00 S 3627Rule Palestine 2084 only - Apr 29 2:00 0 - 3628Rule Palestine 2084 only - Jun 10 2:00 1:00 S 3629Rule Palestine 2085 only - Apr 21 2:00 0 - 3630Rule Palestine 2085 only - Jun 2 2:00 1:00 S 3631Rule Palestine 2086 only - Apr 13 2:00 0 - 3632Rule Palestine 2086 only - May 18 2:00 1:00 S 3633 3634# Zone NAME STDOFF RULES FORMAT [UNTIL] 3635Zone Asia/Gaza 2:17:52 - LMT 1900 Oct 3636 2:00 Zion EET/EEST 1948 May 15 3637 2:00 EgyptAsia EE%sT 1967 Jun 5 3638 2:00 Zion I%sT 1996 3639 2:00 Jordan EE%sT 1999 3640 2:00 Palestine EE%sT 2008 Aug 29 0:00 3641 2:00 - EET 2008 Sep 3642 2:00 Palestine EE%sT 2010 3643 2:00 - EET 2010 Mar 27 0:01 3644 2:00 Palestine EE%sT 2011 Aug 1 3645 2:00 - EET 2012 3646 2:00 Palestine EE%sT 3647 3648Zone Asia/Hebron 2:20:23 - LMT 1900 Oct 3649 2:00 Zion EET/EEST 1948 May 15 3650 2:00 EgyptAsia EE%sT 1967 Jun 5 3651 2:00 Zion I%sT 1996 3652 2:00 Jordan EE%sT 1999 3653 2:00 Palestine EE%sT 3654 3655# Paracel Is 3656# no information 3657 3658# Philippines 3659 3660# From Paul Eggert (2018-11-18): 3661# The Spanish initially used American (west-of-Greenwich) time. 3662# It is unknown what time Manila kept when the British occupied it from 3663# 1762-10-06 through 1764-04; for now assume it kept American time. 3664# On 1844-08-16, Narciso Clavería, governor-general of the 3665# Philippines, issued a proclamation announcing that 1844-12-30 was to 3666# be immediately followed by 1845-01-01; see R.H. van Gent's 3667# History of the International Date Line 3668# https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm 3669# The rest of the data entries are from Shanks & Pottenger. 3670 3671# From Jesper Nørgaard Welen (2006-04-26): 3672# ... claims that Philippines had DST last time in 1990: 3673# http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/ 3674# [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires, 3675# but no details] 3676 3677# From Paul Eggert (2014-08-14): 3678# The following source says DST may be instituted November-January and again 3679# March-June, but this is not definite. It also says DST was last proclaimed 3680# during the Ramos administration (1992-1998); but again, no details. 3681# Carcamo D. PNoy urged to declare use of daylight saving time. 3682# Philippine Star 2014-08-05 3683# http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time 3684 3685# From Paul Goyette (2018-06-15): 3686# In the Philippines, there is a national law, Republic Act No. 10535 3687# which declares the official time here as "Philippine Standard Time". 3688# The act [1] even specifies use of PST as the abbreviation, although 3689# the FAQ provided by PAGASA [2] uses the "acronym PhST to distinguish 3690# it from the Pacific Standard Time (PST)." 3691# [1] http://www.officialgazette.gov.ph/2013/05/15/republic-act-no-10535/ 3692# [2] https://www1.pagasa.dost.gov.ph/index.php/astronomy/philippine-standard-time#republic-act-10535 3693# 3694# From Paul Eggert (2018-06-19): 3695# I surveyed recent news reports, and my impression is that "PST" is 3696# more popular among reliable English-language news sources. This is 3697# not just a measure of Google hit counts: it's also the sizes and 3698# influence of the sources. There is no current abbreviation for DST, 3699# so use "PDT", the usual American style. 3700 3701# From P Chan (2021-05-10): 3702# Here's a fairly comprehensive article in Japanese: 3703# https://wiki.suikawiki.org/n/Philippine%20Time 3704# From Paul Eggert (2021-05-10): 3705# The info in the Japanese table has not been absorbed (yet) below. 3706 3707# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 3708Rule Phil 1936 only - Nov 1 0:00 1:00 D 3709Rule Phil 1937 only - Feb 1 0:00 0 S 3710Rule Phil 1954 only - Apr 12 0:00 1:00 D 3711Rule Phil 1954 only - Jul 1 0:00 0 S 3712Rule Phil 1978 only - Mar 22 0:00 1:00 D 3713Rule Phil 1978 only - Sep 21 0:00 0 S 3714# Zone NAME STDOFF RULES FORMAT [UNTIL] 3715Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 3716 8:04:00 - LMT 1899 May 11 3717 8:00 Phil P%sT 1942 May 3718 9:00 - JST 1944 Nov 3719 8:00 Phil P%sT 3720 3721# Qatar 3722# Zone NAME STDOFF RULES FORMAT [UNTIL] 3723Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha 3724 4:00 - +04 1972 Jun 3725 3:00 - +03 3726 3727# Saudi Arabia 3728# 3729# Japan's year-round bases in Antarctica match this since 1970. 3730# 3731# From Paul Eggert (2018-08-29): 3732# Time in Saudi Arabia and other countries in the Arabian peninsula was not 3733# standardized until 1968 or so; we don't know exactly when, and possibly it 3734# has never been made official. Richard P Hunt, in "Islam city yielding to 3735# modern times", New York Times (1961-04-09), p 20, wrote that only airlines 3736# observed standard time, and that people in Jeddah mostly observed quasi-solar 3737# time, doing so by setting their watches at sunrise to 6 o'clock (or to 12 3738# o'clock for "Arab" time). 3739# 3740# Timekeeping differed depending on who you were and which part of Saudi 3741# Arabia you were in. In 1969, Elias Antar wrote that although a common 3742# practice had been to set one's watch to 12:00 (i.e., midnight) at sunset - 3743# which meant that the time on one side of a mountain could differ greatly from 3744# the time on the other side - many foreigners set their watches to 6pm 3745# instead, while airlines instead used UTC +03 (except in Dhahran, where they 3746# used UTC +04), Aramco used UTC +03 with DST, and the Trans-Arabian Pipe Line 3747# Company used Aramco time in eastern Saudi Arabia and airline time in western. 3748# (The American Military Aid Advisory Group used plain UTC.) Antar writes, 3749# "A man named Higgins, so the story goes, used to run a local power 3750# station. One day, the whole thing became too much for Higgins and he 3751# assembled his staff and laid down the law. 'I've had enough of this,' he 3752# shrieked. 'It is now 12 o'clock Higgins Time, and from now on this station is 3753# going to run on Higgins Time.' And so, until last year, it did." See: 3754# Antar E. Dinner at When? Saudi Aramco World, 1969 March/April. 2-3. 3755# http://archive.aramcoworld.com/issue/196902/dinner.at.when.htm 3756# Also see: Antar EN. Arabian flying is confusing. 3757# Port Angeles (WA) Evening News. 1965-03-10. page 3. 3758# 3759# The TZ database cannot represent quasi-solar time; airline time is the best 3760# we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics 3761# Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated 3762# a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and 3763# Jidda, on March 14, 1947". Shanks & Pottenger guessed 1950; go with the 3764# earlier date. 3765# 3766# Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two 3767# time zones; the other zone, at UT +04, was in the far eastern part of 3768# the country. Presumably this is documenting airline time. Ignore this, 3769# as it's before our 1970 cutoff. 3770# 3771# Zone NAME STDOFF RULES FORMAT [UNTIL] 3772Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 3773 3:00 - +03 3774 3775# Singapore 3776# taken from Mok Ly Yng (2003-10-30) 3777# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html 3778# Zone NAME STDOFF RULES FORMAT [UNTIL] 3779Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 3780 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 3781 7:00 - +07 1933 Jan 1 3782 7:00 0:20 +0720 1936 Jan 1 3783 7:20 - +0720 1941 Sep 1 3784 7:30 - +0730 1942 Feb 16 3785 9:00 - +09 1945 Sep 12 3786 7:30 - +0730 1981 Dec 31 16:00u 3787 8:00 - +08 3788 3789# Spratly Is 3790# no information 3791 3792# Sri Lanka 3793 3794# From Paul Eggert (2013-02-21): 3795# Milne says "Madras mean time use from May 1, 1898. Prior to this Colombo 3796# mean time, 5h. 4m. 21.9s. F., was used." But 5:04:21.9 differs considerably 3797# from Colombo's meridian 5:19:24, so for now ignore Milne and stick with 3798# Shanks and Pottenger. 3799 3800# From Paul Eggert (1996-09-03): 3801# "Sri Lanka advances clock by an hour to avoid blackout" 3802# (<http://www.virtual-pc.com/lankaweb/news/items/240596-2.html>, 1996-05-24, 3803# no longer available as of 1999-08-17) 3804# reported "the country's standard time will be put forward by one hour at 3805# midnight Friday (1830 GMT) 'in the light of the present power crisis'." 3806# 3807# From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted 3808# by Shamindra in Daily News - Hot News Section 3809# <news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net> (1996-10-26): 3810# With effect from 12.30 a.m. on 26th October 1996 3811# Sri Lanka will be six (06) hours ahead of GMT. 3812 3813# From Jesper Nørgaard Welen (2006-04-14), quoting Sri Lanka News Online 3814# <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13): 3815# 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes) 3816# at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006). 3817 3818# From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in: 3819# http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML 3820# [The Tamil Tigers] never accepted the original 1996 time change and simply 3821# kept their clocks set five and a half hours ahead of Greenwich Mean 3822# Time (GMT), in line with neighbor India. 3823# From Paul Eggert (2006-04-18): 3824# People who live in regions under Tamil control can use [TZ='Asia/Kolkata'], 3825# as that zone has agreed with the Tamil areas since our cutoff date of 1970. 3826 3827# From Sadika Sumanapala (2016-10-19): 3828# According to http://www.sltime.org (maintained by Measurement Units, 3829# Standards & Services Department, Sri Lanka) abbreviation for Sri Lanka 3830# standard time is SLST. 3831# 3832# From Paul Eggert (2016-10-18): 3833# "SLST" seems to be reasonably recent and rarely used outside time 3834# zone nerd sources. I searched Google News and found three uses of 3835# it in the International Business Times of India in February and 3836# March of this year when discussing cricket match times, but nothing 3837# since then (though there has been a lot of cricket) and nothing in 3838# other English-language news sources. Our old abbreviation "LKT" is 3839# even worse. For now, let's use a numeric abbreviation; we can 3840# switch to "SLST" if it catches on. 3841 3842# Zone NAME STDOFF RULES FORMAT [UNTIL] 3843Zone Asia/Colombo 5:19:24 - LMT 1880 3844 5:19:32 - MMT 1906 # Moratuwa Mean Time 3845 5:30 - +0530 1942 Jan 5 3846 5:30 0:30 +06 1942 Sep 3847 5:30 1:00 +0630 1945 Oct 16 2:00 3848 5:30 - +0530 1996 May 25 0:00 3849 6:30 - +0630 1996 Oct 26 0:30 3850 6:00 - +06 2006 Apr 15 0:30 3851 5:30 - +0530 3852 3853# Syria 3854# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 3855Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S 3856Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 - 3857Rule Syria 1962 only - Apr 29 2:00 1:00 S 3858Rule Syria 1962 only - Oct 1 2:00 0 - 3859Rule Syria 1963 1965 - May 1 2:00 1:00 S 3860Rule Syria 1963 only - Sep 30 2:00 0 - 3861Rule Syria 1964 only - Oct 1 2:00 0 - 3862Rule Syria 1965 only - Sep 30 2:00 0 - 3863Rule Syria 1966 only - Apr 24 2:00 1:00 S 3864Rule Syria 1966 1976 - Oct 1 2:00 0 - 3865Rule Syria 1967 1978 - May 1 2:00 1:00 S 3866Rule Syria 1977 1978 - Sep 1 2:00 0 - 3867Rule Syria 1983 1984 - Apr 9 2:00 1:00 S 3868Rule Syria 1983 1984 - Oct 1 2:00 0 - 3869Rule Syria 1986 only - Feb 16 2:00 1:00 S 3870Rule Syria 1986 only - Oct 9 2:00 0 - 3871Rule Syria 1987 only - Mar 1 2:00 1:00 S 3872Rule Syria 1987 1988 - Oct 31 2:00 0 - 3873Rule Syria 1988 only - Mar 15 2:00 1:00 S 3874Rule Syria 1989 only - Mar 31 2:00 1:00 S 3875Rule Syria 1989 only - Oct 1 2:00 0 - 3876Rule Syria 1990 only - Apr 1 2:00 1:00 S 3877Rule Syria 1990 only - Sep 30 2:00 0 - 3878Rule Syria 1991 only - Apr 1 0:00 1:00 S 3879Rule Syria 1991 1992 - Oct 1 0:00 0 - 3880Rule Syria 1992 only - Apr 8 0:00 1:00 S 3881Rule Syria 1993 only - Mar 26 0:00 1:00 S 3882Rule Syria 1993 only - Sep 25 0:00 0 - 3883# IATA SSIM (1998-02) says 1998-04-02; 3884# (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02, 3885# 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31; 3886# (2006) says 2006-03-31 and 2006-09-22; 3887# for now ignore all these claims and go with Shanks & Pottenger, 3888# except for the 2006-09-22 claim (which seems right for Ramadan). 3889Rule Syria 1994 1996 - Apr 1 0:00 1:00 S 3890Rule Syria 1994 2005 - Oct 1 0:00 0 - 3891Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S 3892Rule Syria 1999 2006 - Apr 1 0:00 1:00 S 3893# From Stephen Colebourne (2006-09-18): 3894# According to IATA data, Syria will change DST on 21st September [21:00 UTC] 3895# this year [only].... This is probably related to Ramadan, like Egypt. 3896Rule Syria 2006 only - Sep 22 0:00 0 - 3897# From Paul Eggert (2007-03-29): 3898# Today the AP reported "Syria will switch to summertime at midnight Thursday." 3899# http://www.iht.com/articles/ap/2007/03/29/africa/ME-GEN-Syria-Time-Change.php 3900Rule Syria 2007 only - Mar lastFri 0:00 1:00 S 3901# From Jesper Nørgaard (2007-10-27): 3902# The sister center ICARDA of my work CIMMYT is confirming that Syria DST will 3903# not take place 1st November at 0:00 o'clock but 1st November at 24:00 or 3904# rather Midnight between Thursday and Friday. This does make more sense than 3905# having it between Wednesday and Thursday (two workdays in Syria) since the 3906# weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now 3907# it is implemented at midnight of the last workday before weekend... 3908# 3909# From Steffen Thorsen (2007-10-27): 3910# Jesper Nørgaard Welen wrote: 3911# 3912# > "Winter local time in Syria will be observed at midnight of Thursday 1 3913# > November 2007, and the clock will be put back 1 hour." 3914# 3915# I found confirmation on this in this gov.sy-article (Arabic): 3916# http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247 3917# 3918# which using Google's translate tools says: 3919# Council of Ministers also approved the commencement of work on 3920# identifying the winter time as of Friday, 2/11/2007 where the 60th 3921# minute delay at midnight Thursday 1/11/2007. 3922Rule Syria 2007 only - Nov Fri>=1 0:00 0 - 3923 3924# From Stephen Colebourne (2008-03-17): 3925# For everyone's info, I saw an IATA time zone change for [Syria] for 3926# this month (March 2008) in the last day or so.... 3927# Country Time Standard --- DST Start --- --- DST End --- DST 3928# Name Zone Variation Time Date Time Date 3929# Variation 3930# Syrian Arab 3931# Republic SY +0200 2200 03APR08 2100 30SEP08 +0300 3932# 2200 02APR09 2100 30SEP09 +0300 3933# 2200 01APR10 2100 30SEP10 +0300 3934 3935# From Arthur David Olson (2008-03-17): 3936# Here's a link to English-language coverage by the Syrian Arab News 3937# Agency (SANA)... 3938# http://www.sana.sy/eng/21/2008/03/11/165173.htm 3939# ...which reads (in part) "The Cabinet approved the suggestion of the 3940# Ministry of Electricity to begin daylight savings time on Friday April 3941# 4th, advancing clocks one hour ahead on midnight of Thursday April 3rd." 3942# Since Syria is two hours east of UTC, the 2200 and 2100 transition times 3943# shown above match up with midnight in Syria. 3944 3945# From Arthur David Olson (2008-03-18): 3946# My best guess at a Syrian rule is "the Friday nearest April 1"; 3947# coding that involves either using a "Mar Fri>=29" construct that old time zone 3948# compilers can't handle or having multiple Rules (a la Israel). 3949# For now, use "Apr Fri>=1", and go with IATA on a uniform Sep 30 end. 3950 3951# From Steffen Thorsen (2008-10-07): 3952# Syria has now officially decided to end DST on 2008-11-01 this year, 3953# according to the following article in the Syrian Arab News Agency (SANA). 3954# 3955# The article is in Arabic, and seems to tell that they will go back to 3956# winter time on 2008-11-01 at 00:00 local daylight time (delaying/setting 3957# clocks back 60 minutes). 3958# 3959# http://sana.sy/ara/2/2008/10/07/195459.htm 3960 3961# From Steffen Thorsen (2009-03-19): 3962# Syria will start DST on 2009-03-27 00:00 this year according to many sources, 3963# two examples: 3964# 3965# http://www.sana.sy/eng/21/2009/03/17/217563.htm 3966# (English, Syrian Arab News # Agency) 3967# http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209 3968# (Arabic, gov-site) 3969# 3970# We have not found any sources saying anything about when DST ends this year. 3971# 3972# Our summary 3973# https://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html 3974 3975# From Steffen Thorsen (2009-10-27): 3976# The Syrian Arab News Network on 2009-09-29 reported that Syria will 3977# revert back to winter (standard) time on midnight between Thursday 3978# 2009-10-29 and Friday 2009-10-30: 3979# http://www.sana.sy/ara/2/2009/09/29/247012.htm (Arabic) 3980 3981# From Arthur David Olson (2009-10-28): 3982# We'll see if future DST switching times turn out to be end of the last 3983# Thursday of the month or the start of the last Friday of the month or 3984# something else. For now, use the start of the last Friday. 3985 3986# From Steffen Thorsen (2010-03-17): 3987# The "Syrian News Station" reported on 2010-03-16 that the Council of 3988# Ministers has decided that Syria will start DST on midnight Thursday 3989# 2010-04-01: (midnight between Thursday and Friday): 3990# http://sns.sy/sns/?path=news/read/11421 (Arabic) 3991 3992# From Steffen Thorsen (2012-03-26): 3993# Today, Syria's government announced that they will start DST early on Friday 3994# (00:00). This is a bit earlier than the past two years. 3995# 3996# From Syrian Arab News Agency, in Arabic: 3997# http://www.sana.sy/ara/2/2012/03/26/408215.htm 3998# 3999# Our brief summary: 4000# https://www.timeanddate.com/news/time/syria-dst-2012.html 4001 4002# From Steffen Thorsen (2022-10-05): 4003# Syria is adopting year-round DST, starting this autumn.... 4004# From https://www.enabbaladi.net/archives/607812 4005# "This [the decision] came after the weekly government meeting today, 4006# Tuesday 4 October ..." 4007# 4008# From Paul Eggert (2022-10-05): 4009# Like Jordan, model this as a transition from EEST +03 (DST) to plain +03 4010# (non-DST) at the point where DST would otherwise have ended. 4011 4012Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S 4013Rule Syria 2008 only - Nov 1 0:00 0 - 4014Rule Syria 2009 only - Mar lastFri 0:00 1:00 S 4015Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S 4016Rule Syria 2012 2022 - Mar lastFri 0:00 1:00 S 4017Rule Syria 2009 2022 - Oct lastFri 0:00 0 - 4018 4019# Zone NAME STDOFF RULES FORMAT [UNTIL] 4020Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 4021 2:00 Syria EE%sT 2022 Oct 28 0:00 4022 3:00 - +03 4023 4024# Tajikistan 4025# From Shanks & Pottenger. 4026# Zone NAME STDOFF RULES FORMAT [UNTIL] 4027Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 4028 5:00 - +05 1930 Jun 21 4029 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 4030 5:00 1:00 +06 1991 Sep 9 2:00s 4031 5:00 - +05 4032 4033# Thailand 4034# Zone NAME STDOFF RULES FORMAT [UNTIL] 4035Zone Asia/Bangkok 6:42:04 - LMT 1880 4036 6:42:04 - BMT 1920 Apr # Bangkok Mean Time 4037 7:00 - +07 4038 4039# Turkmenistan 4040# From Shanks & Pottenger. 4041# Zone NAME STDOFF RULES FORMAT [UNTIL] 4042Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad 4043 4:00 - +04 1930 Jun 21 4044 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00 4045 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00 4046 5:00 - +05 4047 4048# United Arab Emirates 4049# 4050# The Crozet Is also observe Réunion time; see the 'antarctica' file. 4051# Zone NAME STDOFF RULES FORMAT [UNTIL] 4052Zone Asia/Dubai 3:41:12 - LMT 1920 4053 4:00 - +04 4054 4055# Uzbekistan 4056# Byalokoz 1919 says Uzbekistan was 4:27:53. 4057# Zone NAME STDOFF RULES FORMAT [UNTIL] 4058Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2 4059 4:00 - +04 1930 Jun 21 4060 5:00 - +05 1981 Apr 1 4061 5:00 1:00 +06 1981 Oct 1 4062 6:00 - +06 1982 Apr 1 4063 5:00 RussiaAsia +05/+06 1992 4064 5:00 - +05 4065# Milne says Tashkent was 4:37:10.8. 4066 #STDOFF 4:37:10.8 4067Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 4068 5:00 - +05 1930 Jun 21 4069 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00 4070 5:00 RussiaAsia +05/+06 1992 4071 5:00 - +05 4072 4073# Vietnam (southern) 4074 4075# From Paul Eggert (2014-10-04): 4076# Milne gives 7:16:56 for the meridian of Saigon in 1899, as being 4077# used in Lower Laos, Cambodia, and Annam. But this is quite a ways 4078# from Saigon's location. For now, ignore this and stick with Shanks 4079# and Pottenger for LMT before 1906. 4080 4081# From Arthur David Olson (2008-03-18): 4082# The English-language name of Vietnam's most populous city is "Ho Chi Minh 4083# City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters. 4084 4085# From Paul Eggert (2022-07-27) after a 2014 heads-up from Trần Ngọc Quân: 4086# Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)" 4087# (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50, 4088# is quoted verbatim in: 4089# http://www.thoigian.com.vn/?mPage=P80D01 4090# is translated by Brian Inglis in: 4091# https://mm.icann.org/pipermail/tz/2014-October/021654.html 4092# and is the basis for the information below. 4093# 4094# The 1906 transition was effective July 1 and standardized Indochina to 4095# Phù Liễn Observatory, legally 104° 17' 17" east of Paris. 4096# It's unclear whether this meant legal Paris Mean Time (00:09:21) or 4097# the Paris Meridian; for now guess the former and round the exact 4098# 07:06:30.1333... to 07:06:30.13 as the legal spec used 66 2/3 ms precision. 4099# which is used below even though the modern-day Phù Liễn Observatory 4100# is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. 4101# 4102# The following transitions occurred in Indochina in general (before 1954) 4103# and in South Vietnam in particular (after 1954): 4104# To 07:00 on 1911-05-01. 4105# To 08:00 on 1942-12-31 at 23:00. 4106# To 09:00 on 1945-03-14 at 23:00. 4107# To 07:00 on 1945-09-02 in Vietnam. 4108# To 08:00 on 1947-04-01 in French-controlled Indochina. 4109# To 07:00 on 1955-07-01 in South Vietnam. 4110# To 08:00 on 1959-12-31 at 23:00 in South Vietnam. 4111# To 07:00 on 1975-06-13 in South Vietnam. 4112# 4113# Trần cites the following sources; it's unclear which supplied the info above. 4114# 4115# Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội, 4116# No. 9, Paris, February 1982. 4117# 4118# Lê Thành Lân: "Lịch và niên biểu lịch sử hai mươi thế kỷ (0001-2010)", 4119# NXB Thống kê, Hanoi, 2000. 4120# 4121# Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu", 4122# NXB Thuận Hoá, Huế, 1995. 4123 4124# Zone NAME STDOFF RULES FORMAT [UNTIL] 4125 #STDOFF 7:06:30.13 4126Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1 4127 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 4128 7:00 - +07 1942 Dec 31 23:00 4129 8:00 - +08 1945 Mar 14 23:00 4130 9:00 - +09 1945 Sep 2 4131 7:00 - +07 1947 Apr 1 4132 8:00 - +08 1955 Jul 1 4133 7:00 - +07 1959 Dec 31 23:00 4134 8:00 - +08 1975 Jun 13 4135 7:00 - +07 4136 4137# From Paul Eggert (2019-02-19): 4138# 4139# The Ho Chi Minh entry suffices for most purposes as it agrees with all of 4140# Vietnam since 1975-06-13. Presumably clocks often changed in south Vietnam 4141# in the early 1970s as locations changed hands during the war; however the 4142# details are unknown and would likely be too voluminous for this database. 4143# 4144# For timestamps in north Vietnam back to 1970 (the tzdb cutoff), 4145# use Asia/Bangkok; see the VN entries in the file zone1970.tab. 4146# For timestamps before 1970, see Asia/Hanoi in the file 'backzone'. 4147 4148# Yemen 4149# Zone NAME STDOFF RULES FORMAT [UNTIL] 4150Zone Asia/Aden 2:59:54 - LMT 1950 4151 3:00 - +03 4152 4153