1# <pre> 2# This file is in the public domain, so clarified as of 3# 2009-05-17 by Arthur David Olson. 4 5# This data is by no means authoritative; if you think you know better, 6# go ahead and edit the file (and please send any changes to 7# tz@elsie.nci.nih.gov for general use in the future). 8 9# From Paul Eggert (2006-03-22): 10# A good source for time zone historical data outside the U.S. is 11# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 12# San Diego: ACS Publications, Inc. (2003). 13# 14# Gwillim Law writes that a good source 15# for recent time zone data is the International Air Transport 16# Association's Standard Schedules Information Manual (IATA SSIM), 17# published semiannually. Law sent in several helpful summaries 18# of the IATA's data after 1990. 19# 20# Except where otherwise noted, Shanks & Pottenger is the source for 21# entries through 1990, and IATA SSIM is the source for entries afterwards. 22# 23# Earlier editions of these tables used the North American style (e.g. ARST and 24# ARDT for Argentine Standard and Daylight Time), but the following quote 25# suggests that it's better to use European style (e.g. ART and ARST). 26# I suggest the use of _Summer time_ instead of the more cumbersome 27# _daylight-saving time_. _Summer time_ seems to be in general use 28# in Europe and South America. 29# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 30# H L Mencken, _The American Language: Supplement I_ (1960), p 466 31# 32# Earlier editions of these tables also used the North American style 33# for time zones in Brazil, but this was incorrect, as Brazilians say 34# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 35# the railroad sector, writes (1999-07-06): 36# The subject of time zones is currently a matter of discussion/debate in 37# Brazil. Let's say that "the Brasilia time" is considered the 38# "official time" because Brasilia is the capital city. 39# The other three time zones are called "Brasilia time "minus one" or 40# "plus one" or "plus two". As far as I know there is no such 41# name/designation as "Eastern Time" or "Central Time". 42# So I invented the following (English-language) abbreviations for now. 43# Corrections are welcome! 44# std dst 45# -2:00 FNT FNST Fernando de Noronha 46# -3:00 BRT BRST Brasilia 47# -4:00 AMT AMST Amazon 48# -5:00 ACT ACST Acre 49 50############################################################################### 51 52############################################################################### 53 54# Argentina 55 56# From Bob Devine (1988-01-28): 57# Argentina: first Sunday in October to first Sunday in April since 1976. 58# Double Summer time from 1969 to 1974. Switches at midnight. 59 60# From U. S. Naval Observatory (1988-01-199): 61# ARGENTINA 3 H BEHIND UTC 62 63# From Hernan G. Otero (1995-06-26): 64# I am sending modifications to the Argentine time zone table... 65# AR was chosen because they are the ISO letters that represent Argentina. 66 67# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 68Rule Arg 1930 only - Dec 1 0:00 1:00 S 69Rule Arg 1931 only - Apr 1 0:00 0 - 70Rule Arg 1931 only - Oct 15 0:00 1:00 S 71Rule Arg 1932 1940 - Mar 1 0:00 0 - 72Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 73Rule Arg 1940 only - Jul 1 0:00 1:00 S 74Rule Arg 1941 only - Jun 15 0:00 0 - 75Rule Arg 1941 only - Oct 15 0:00 1:00 S 76Rule Arg 1943 only - Aug 1 0:00 0 - 77Rule Arg 1943 only - Oct 15 0:00 1:00 S 78Rule Arg 1946 only - Mar 1 0:00 0 - 79Rule Arg 1946 only - Oct 1 0:00 1:00 S 80Rule Arg 1963 only - Oct 1 0:00 0 - 81Rule Arg 1963 only - Dec 15 0:00 1:00 S 82Rule Arg 1964 1966 - Mar 1 0:00 0 - 83Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 84Rule Arg 1967 only - Apr 2 0:00 0 - 85Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 86Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 87Rule Arg 1974 only - Jan 23 0:00 1:00 S 88Rule Arg 1974 only - May 1 0:00 0 - 89Rule Arg 1988 only - Dec 1 0:00 1:00 S 90# 91# From Hernan G. Otero (1995-06-26): 92# These corrections were contributed by InterSoft Argentina S.A., 93# obtaining the data from the: 94# Talleres de Hidrografia Naval Argentina 95# (Argentine Naval Hydrography Institute) 96Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 97Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 98# 99# From Hernan G. Otero (1995-06-26): 100# From this moment on, the law that mandated the daylight saving 101# time corrections was derogated and no more modifications 102# to the time zones (for daylight saving) are now made. 103# 104# From Rives McDow (2000-01-10): 105# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 106# which did not result in the switch of a time zone, as they stayed 9 hours 107# from the International Date Line. 108Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 109# From Paul Eggert (2007-12-28): 110# DST was set to expire on March 5, not March 3, but since it was converted 111# to standard time on March 3 it's more convenient for us to pretend that 112# it ended on March 3. 113Rule Arg 2000 only - Mar 3 0:00 0 - 114# 115# From Peter Gradelski via Steffen Thorsen (2000-03-01): 116# We just checked with our Sao Paulo office and they say the government of 117# Argentina decided not to become one of the countries that go on or off DST. 118# So Buenos Aires should be -3 hours from GMT at all times. 119# 120# From Fabian L. Arce Jofre (2000-04-04): 121# The law that claimed DST for Argentina was derogated by President Fernando 122# de la Rua on March 2, 2000, because it would make people spend more energy 123# in the winter time, rather than less. The change took effect on March 3. 124# 125# From Mariano Absatz (2001-06-06): 126# one of the major newspapers here in Argentina said that the 1999 127# Timezone Law (which never was effectively applied) will (would?) be 128# in effect.... The article is at 129# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 130# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 131# 1999-09-17, and published 1999-09-21. The official publication is at: 132# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 133# Regretfully, you have to subscribe (and pay) for the on-line version.... 134# 135# (2001-06-12): 136# the timezone for Argentina will not change next Sunday. 137# Apparently it will do so on Sunday 24th.... 138# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 139# 140# (2001-06-25): 141# Last Friday (yes, the last working day before the date of the change), the 142# Senate annulled the 1999 law that introduced the changes later postponed. 143# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 144# It remains the vote of the Deputies..., but it will be the same.... 145# This kind of things had always been done this way in Argentina. 146# We are still -03:00 all year round in all of the country. 147# 148# From Steffen Thorsen (2007-12-21): 149# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 150# all of the country (all Zone-entries) are affected. News reports like 151# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 152# that Argentina will use DST next year as well, from October to 153# March, although exact rules are not given. 154# 155# From Jesper Norgaard Welen (2007-12-26) 156# The last hurdle of Argentina DST is over, the proposal was approved in 157# the lower chamber too (Deputados) with a vote 192 for and 2 against. 158# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 159# the original scanned proposal, where the dates and the zero hours are 160# clear and unambiguous...This is the article about final approval: 161# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 162# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 163# </a> 164# 165# From Paul Eggert (2007-12-22): 166# For dates after mid-2008, the following rules are my guesses and 167# are quite possibly wrong, but are more likely than no DST at all. 168 169# From Alexander Krivenyshev (2008-09-05): 170# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 171# Argentina will start DST on Sunday October 19, 2008. 172# 173# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 174# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 175# </a> 176# OR 177# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 178# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 179# </a> 180 181# From Rodrigo Severo (2008-10-06): 182# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 183# ... 184# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 185# Hi, there is a problem with timezone-data-2008e and maybe with 186# timezone-data-2008f 187# Argentinian law [Number] 25.155 is no longer valid. 188# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 189# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 190# </a> 191# The new one is law [Number] 26.350 192# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 193# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 194# </a> 195# So there is no summer time in Argentina for now. 196 197# From Mariano Absatz (2008-10-20): 198# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 199# From 2008-10-19 until 2009-03-15 200# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 201# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 202# </a> 203# 204# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 205# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 206# and Tierra del Fuego 207# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 208# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 209# </a> 210# 211# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 212# it will not apply DST either (even when it was not included in Decree 1705/2008) 213# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 214# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 215# </a> 216 217# From fullinet (2009-10-18): 218# As announced in 219# <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> 220# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 221# </a> 222# (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") 223# 224# "Por el momento, el Gobierno Nacional resolvio no modificar la hora 225# oficial, decision que estaba en estudio para su implementacion el 226# domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio 227# que la Argentina hoy, en estas condiciones meteorologicas, no necesita 228# la modificacion del huso horario, ya que 2009 nos encuentra con 229# crecimiento en la produccion y distribucion energetica." 230 231Rule Arg 2007 only - Dec 30 0:00 1:00 S 232Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 233Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 234 235# From Mariano Absatz (2004-05-21): 236# Today it was officially published that the Province of Mendoza is changing 237# its timezone this winter... starting tomorrow night.... 238# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 239# From Paul Eggert (2004-05-24): 240# It's Law No. 7,210. This change is due to a public power emergency, so for 241# now we'll assume it's for this year only. 242# 243# From Paul Eggert (2006-03-22): 244# <a href="http://www.spicasc.net/horvera.html"> 245# Hora de verano para la Republica Argentina (2003-06-08) 246# </a> says that standard time in Argentina from 1894-10-31 247# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 248# over Shanks & Pottenger. 249# 250# From Mariano Absatz (2004-06-05): 251# These media articles from a major newspaper mostly cover the current state: 252# http://www.lanacion.com.ar/04/05/27/de_604825.asp 253# http://www.lanacion.com.ar/04/05/28/de_605203.asp 254# 255# The following eight (8) provinces pulled clocks back to UTC-04:00 at 256# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 257# Apparently, all nine provinces would go back to UTC-03:00 at the same 258# time in October 17th. 259# 260# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 261# Tierra del Fuego, Tucuman. 262# 263# From Mariano Absatz (2004-06-14): 264# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 265# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 266# annoyance with the change is much higher than the power savings obtained.... 267# 268# From Gwillim Law (2004-06-14): 269# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 270# "The time change in Tierra del Fuego was a conflicted decision from 271# the start. The government had decreed that the measure would take 272# effect on June 1, but a normative error forced the new time to begin 273# three days earlier, from a Saturday to a Sunday.... 274# Our understanding was that the change was originally scheduled to take place 275# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 276# provinces). Sunday was May 30, only two days earlier. So the article 277# contains a contradiction. I would give more credence to the Saturday/Sunday 278# date than the "three days earlier" phrase, and conclude that Tierra del 279# Fuego set its clocks back at 2004-05-30 00:00. 280# 281# From Steffen Thorsen (2004-10-05): 282# The previous law 7210 which changed the province of Mendoza's time zone 283# back in May have been modified slightly in a new law 7277, which set the 284# new end date to 2004-09-26 (original date was 2004-10-17). 285# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 286# 287# From Mariano Absatz (2004-10-05): 288# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 289# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 290# at midnight between Saturday, July 24th and Sunday, July 25th.... 291# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 292# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 293# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 294 295# From Alex Krivenyshev (2008-01-17): 296# Here are articles that Argentina Province San Luis is planning to end DST 297# as earlier as upcoming Monday January 21, 2008 or February 2008: 298# 299# Provincia argentina retrasa reloj y marca diferencia con resto del pais 300# (Argentine Province delayed clock and mark difference with the rest of the 301# country) 302# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 303# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 304# </a> 305# 306# Es inminente que en San Luis atrasen una hora los relojes 307# (It is imminent in San Luis clocks one hour delay) 308# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 309# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 310# </a> 311# 312# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 313# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 314# </a> 315 316# From Jesper Norgaard Welen (2008-01-18): 317# The page of the San Luis provincial government 318# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 319# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 320# </a> 321# confirms what Alex Krivenyshev has earlier sent to the tz 322# emailing list about that San Luis plans to return to standard 323# time much earlier than the rest of the country. It also 324# confirms that upon request the provinces San Juan and Mendoza 325# refused to follow San Luis in this change. 326# 327# The change is supposed to take place Monday the 21.st at 0:00 328# hours. As far as I understand it if this goes ahead, we need 329# a new timezone for San Luis (although there are also documented 330# independent changes in the southamerica file of San Luis in 331# 1990 and 1991 which has not been confirmed). 332 333# From Jesper Norgaard Welen (2008-01-25): 334# Unfortunately the below page has become defunct, about the San Luis 335# time change. Perhaps because it now is part of a group of pages "Most 336# important pages of 2008." 337# 338# You can use 339# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 340# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 341# </a> 342# instead it seems. Or use "Buscador" from the main page of the San Luis 343# government, and fill in "huso" and click OK, and you will get 3 pages 344# from which the first one is identical to the above. 345 346# From Mariano Absatz (2008-01-28): 347# I can confirm that the Province of San Luis (and so far only that 348# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 349# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 350# 1 hour), and they intend to keep UTC-3 as their timezone all year round 351# (that is, unless they change their mind any minute now). 352# 353# So we'll have to add yet another city to 'southamerica' (I think San 354# Luis city is the mos populated city in the Province, so it'd be 355# America/Argentina/San_Luis... of course I can't remember if San Luis's 356# history of particular changes goes along with Mendoza or San Juan :-( 357# (I only remember not being able to collect hard facts about San Luis 358# back in 2004, when these provinces changed to UTC-4 for a few days, I 359# mailed them personally and never got an answer). 360 361# From Paul Eggert (2008-06-30): 362# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 363# from the IATA otherwise. As noted below, Shanks & Pottenger say that 364# America/Cordoba split into 6 subregions during 1991/1992, one of which 365# was America/San_Luis, but we haven't verified this yet so for now we'll 366# keep America/Cordoba a single region rather than splitting it into the 367# other 5 subregions. 368 369# From Mariano Absatz (2009-03-13): 370# Yesterday (with our usual 2-day notice) the Province of San Luis 371# decided that next Sunday instead of "staying" @utc-03:00 they will go 372# to utc-04:00 until the second Saturday in October... 373# 374# The press release is at 375# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 376# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 377# </a> 378# (I couldn't find the decree, but 379# <a href="http://www.sanluis.gov.ar"> 380# www.sanluis.gov.ar 381# <a/> 382# is the official page for the Province Government). 383# 384# There's also a note in only one of the major national papers (La Naci�n) at 385# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 386# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 387# </a> 388# 389# The press release says: 390# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 391# atrasar una hora sus relojes. 392# 393# A partir de entonces, San Luis establecer� el huso horario propio de 394# la Provincia. De esta manera, durante el periodo del calendario anual 395# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 396# domingo de marzo y las 24:00 del segundo s�bado de octubre. 397# Quick&dirty translation 398# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 399# inhabitants) will have to turn back one hour their clocks 400# 401# Since then, San Luis will establish its own Province timezone. Thus, 402# during 2009, this timezone change will run from 00:00 the third Sunday 403# in March until 24:00 of the second Saturday in October. 404 405# From Mariano Absatz (2009-10-16): 406# ...the Province of San Luis is a case in itself. 407# 408# The Law at 409# <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" 410# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 411# </a> 412# is ambiguous because establishes a calendar from the 2nd Sunday in 413# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 414# complement of that starting on the 2nd Sunday of March at 0:00 and 415# ending on the 2nd Saturday of March at 24:00. 416# 417# This clearly breaks every time the 1st of March or October is a Sunday. 418# 419# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 420# Sunday of October and March. 421# 422# The problem is that the changes in the rest of the Provinces that did 423# change in 2007/2008, were made according to the Federal Law and Decrees 424# that did so on the 3rd Sunday of October and March. 425# 426# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 427# (October 11th) at 0:00. 428# 429# So I guess a new set of rules, besides "Arg", must be made and the last 430# America/Argentina/San_Luis entries should change to use these... 431# 432# I'm enclosing a patch that does what I say... regretfully, the San Luis 433# timezone must be called "WART/WARST" even when most of the time (like, 434# right now) WARST == ART... that is, since last Sunday, all the country 435# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 436# of the country calls it "ART". 437# ... 438 439# From Alexander Krivenyshev (2010-04-09): 440# According to news reports from El Diario de la Republica Province San 441# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 442# after April 11, 2010--will continue to have same time as rest of 443# Argentina (UTC-3) (no DST). 444# 445# Confirmaron la prórroga del huso horario de verano (Spanish) 446# <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> 447# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 448# </a> 449# or (some English translation): 450# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> 451# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 452# </a> 453 454# From Mariano Absatz (2010-04-12): 455# yes...I can confirm this...and given that San Luis keeps calling 456# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 457# rules...San Luis is still using "Western ARgentina Time" and it got 458# stuck on Summer daylight savings time even though the summer is over. 459 460# Zone NAME GMTOFF RULES FORMAT [UNTIL] 461# 462# Buenos Aires (BA), Capital Federal (CF), 463Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 464 -4:16:48 - CMT 1920 May # Cordoba Mean Time 465 -4:00 - ART 1930 Dec 466 -4:00 Arg AR%sT 1969 Oct 5 467 -3:00 Arg AR%sT 1999 Oct 3 468 -4:00 Arg AR%sT 2000 Mar 3 469 -3:00 Arg AR%sT 470# 471# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 472# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 473# 474# Shanks & Pottenger also make the following claims, which we haven't verified: 475# - Formosa switched to -3:00 on 1991-01-07. 476# - Misiones switched to -3:00 on 1990-12-29. 477# - Chaco switched to -3:00 on 1991-01-04. 478# - Santiago del Estero switched to -4:00 on 1991-04-01, 479# then to -3:00 on 1991-04-26. 480# 481Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 482 -4:16:48 - CMT 1920 May 483 -4:00 - ART 1930 Dec 484 -4:00 Arg AR%sT 1969 Oct 5 485 -3:00 Arg AR%sT 1991 Mar 3 486 -4:00 - WART 1991 Oct 20 487 -3:00 Arg AR%sT 1999 Oct 3 488 -4:00 Arg AR%sT 2000 Mar 3 489 -3:00 Arg AR%sT 490# 491# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 492Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 493 -4:16:48 - CMT 1920 May 494 -4:00 - ART 1930 Dec 495 -4:00 Arg AR%sT 1969 Oct 5 496 -3:00 Arg AR%sT 1991 Mar 3 497 -4:00 - WART 1991 Oct 20 498 -3:00 Arg AR%sT 1999 Oct 3 499 -4:00 Arg AR%sT 2000 Mar 3 500 -3:00 Arg AR%sT 2008 Oct 18 501 -3:00 - ART 502# 503# Tucuman (TM) 504Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 505 -4:16:48 - CMT 1920 May 506 -4:00 - ART 1930 Dec 507 -4:00 Arg AR%sT 1969 Oct 5 508 -3:00 Arg AR%sT 1991 Mar 3 509 -4:00 - WART 1991 Oct 20 510 -3:00 Arg AR%sT 1999 Oct 3 511 -4:00 Arg AR%sT 2000 Mar 3 512 -3:00 - ART 2004 Jun 1 513 -4:00 - WART 2004 Jun 13 514 -3:00 Arg AR%sT 515# 516# La Rioja (LR) 517Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 518 -4:16:48 - CMT 1920 May 519 -4:00 - ART 1930 Dec 520 -4:00 Arg AR%sT 1969 Oct 5 521 -3:00 Arg AR%sT 1991 Mar 1 522 -4:00 - WART 1991 May 7 523 -3:00 Arg AR%sT 1999 Oct 3 524 -4:00 Arg AR%sT 2000 Mar 3 525 -3:00 - ART 2004 Jun 1 526 -4:00 - WART 2004 Jun 20 527 -3:00 Arg AR%sT 2008 Oct 18 528 -3:00 - ART 529# 530# San Juan (SJ) 531Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 532 -4:16:48 - CMT 1920 May 533 -4:00 - ART 1930 Dec 534 -4:00 Arg AR%sT 1969 Oct 5 535 -3:00 Arg AR%sT 1991 Mar 1 536 -4:00 - WART 1991 May 7 537 -3:00 Arg AR%sT 1999 Oct 3 538 -4:00 Arg AR%sT 2000 Mar 3 539 -3:00 - ART 2004 May 31 540 -4:00 - WART 2004 Jul 25 541 -3:00 Arg AR%sT 2008 Oct 18 542 -3:00 - ART 543# 544# Jujuy (JY) 545Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 546 -4:16:48 - CMT 1920 May 547 -4:00 - ART 1930 Dec 548 -4:00 Arg AR%sT 1969 Oct 5 549 -3:00 Arg AR%sT 1990 Mar 4 550 -4:00 - WART 1990 Oct 28 551 -4:00 1:00 WARST 1991 Mar 17 552 -4:00 - WART 1991 Oct 6 553 -3:00 1:00 ARST 1992 554 -3:00 Arg AR%sT 1999 Oct 3 555 -4:00 Arg AR%sT 2000 Mar 3 556 -3:00 Arg AR%sT 2008 Oct 18 557 -3:00 - ART 558# 559# Catamarca (CT), Chubut (CH) 560Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 561 -4:16:48 - CMT 1920 May 562 -4:00 - ART 1930 Dec 563 -4:00 Arg AR%sT 1969 Oct 5 564 -3:00 Arg AR%sT 1991 Mar 3 565 -4:00 - WART 1991 Oct 20 566 -3:00 Arg AR%sT 1999 Oct 3 567 -4:00 Arg AR%sT 2000 Mar 3 568 -3:00 - ART 2004 Jun 1 569 -4:00 - WART 2004 Jun 20 570 -3:00 Arg AR%sT 2008 Oct 18 571 -3:00 - ART 572# 573# Mendoza (MZ) 574Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 575 -4:16:48 - CMT 1920 May 576 -4:00 - ART 1930 Dec 577 -4:00 Arg AR%sT 1969 Oct 5 578 -3:00 Arg AR%sT 1990 Mar 4 579 -4:00 - WART 1990 Oct 15 580 -4:00 1:00 WARST 1991 Mar 1 581 -4:00 - WART 1991 Oct 15 582 -4:00 1:00 WARST 1992 Mar 1 583 -4:00 - WART 1992 Oct 18 584 -3:00 Arg AR%sT 1999 Oct 3 585 -4:00 Arg AR%sT 2000 Mar 3 586 -3:00 - ART 2004 May 23 587 -4:00 - WART 2004 Sep 26 588 -3:00 Arg AR%sT 2008 Oct 18 589 -3:00 - ART 590# 591# San Luis (SL) 592 593Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 594Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S 595 596Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 597 -4:16:48 - CMT 1920 May 598 -4:00 - ART 1930 Dec 599 -4:00 Arg AR%sT 1969 Oct 5 600 -3:00 Arg AR%sT 1990 601 -3:00 1:00 ARST 1990 Mar 14 602 -4:00 - WART 1990 Oct 15 603 -4:00 1:00 WARST 1991 Mar 1 604 -4:00 - WART 1991 Jun 1 605 -3:00 - ART 1999 Oct 3 606 -4:00 1:00 WARST 2000 Mar 3 607 -3:00 - ART 2004 May 31 608 -4:00 - WART 2004 Jul 25 609 -3:00 Arg AR%sT 2008 Jan 21 610 -4:00 SanLuis WAR%sT 611# 612# Santa Cruz (SC) 613Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 614 -4:16:48 - CMT 1920 May # Cordoba Mean Time 615 -4:00 - ART 1930 Dec 616 -4:00 Arg AR%sT 1969 Oct 5 617 -3:00 Arg AR%sT 1999 Oct 3 618 -4:00 Arg AR%sT 2000 Mar 3 619 -3:00 - ART 2004 Jun 1 620 -4:00 - WART 2004 Jun 20 621 -3:00 Arg AR%sT 2008 Oct 18 622 -3:00 - ART 623# 624# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 625Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 626 -4:16:48 - CMT 1920 May # Cordoba Mean Time 627 -4:00 - ART 1930 Dec 628 -4:00 Arg AR%sT 1969 Oct 5 629 -3:00 Arg AR%sT 1999 Oct 3 630 -4:00 Arg AR%sT 2000 Mar 3 631 -3:00 - ART 2004 May 30 632 -4:00 - WART 2004 Jun 20 633 -3:00 Arg AR%sT 2008 Oct 18 634 -3:00 - ART 635 636# Aruba 637# Zone NAME GMTOFF RULES FORMAT [UNTIL] 638Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 639 -4:30 - ANT 1965 # Netherlands Antilles Time 640 -4:00 - AST 641 642# Bolivia 643# Zone NAME GMTOFF RULES FORMAT [UNTIL] 644Zone America/La_Paz -4:32:36 - LMT 1890 645 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 646 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 647 -4:00 - BOT # Bolivia Time 648 649# Brazil 650 651# From Paul Eggert (1993-11-18): 652# The mayor of Rio recently attempted to change the time zone rules 653# just in his city, in order to leave more summer time for the tourist trade. 654# The rule change lasted only part of the day; 655# the federal government refused to follow the city's rules, and business 656# was in a chaos, so the mayor backed down that afternoon. 657 658# From IATA SSIM (1996-02): 659# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 660# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 661# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 662# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 663# [The last three states are new to this issue of the IATA SSIM.] 664 665# From Gwillim Law (1996-10-07): 666# Geography, history (Tocantins was part of Goias until 1989), and other 667# sources of time zone information lead me to believe that AL, SE, and TO were 668# always in BR1, and so the only change was whether or not they observed DST.... 669# The earliest issue of the SSIM I have is 2/91. Each issue from then until 670# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 671# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 672# (UTC-4).... The other two time zones given for Brazil are BR3, which is 673# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 674# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 675# become part of the state of Pernambuco). The boundary between BR1 and BR2 676# has never been clearly stated. They've simply been called East and West. 677# However, some conclusions can be drawn from another IATA manual: the Airline 678# Coding Directory, which lists close to 400 airports in Brazil. For each 679# airport it gives a time zone which is coded to the SSIM. From that 680# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 681# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 682# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 683 684# From Marcos Tadeu (1998-09-27): 685# <a href="http://pcdsh01.on.br/verao1.html"> 686# Brazilian official page 687# </a> 688 689# From Jesper Norgaard (2000-11-03): 690# [For an official list of which regions in Brazil use which time zones, see:] 691# http://pcdsh01.on.br/Fusbr.htm 692# http://pcdsh01.on.br/Fusbrhv.htm 693 694# From Celso Doria via David Madeo (2002-10-09): 695# The reason for the delay this year has to do with elections in Brazil. 696# 697# Unlike in the United States, elections in Brazil are 100% computerized and 698# the results are known almost immediately. Yesterday, it was the first 699# round of the elections when 115 million Brazilians voted for President, 700# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 701# counting (or re-counting) votes anymore and we know there will be a second 702# round for the Presidency and also for some Governors. The 2nd round will 703# take place on October 27th. 704# 705# The reason why the DST will only begin November 3rd is that the thousands 706# of electoral machines used cannot have their time changed, and since the 707# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 708# the Government decided to postpone DST, instead of changing the Constitution 709# (maybe, for the next elections, it will be possible to change the clock)... 710 711# From Rodrigo Severo (2004-10-04): 712# It's just the biannual change made necessary by the much hyped, supposedly 713# modern Brazilian eletronic voting machines which, apparently, can't deal 714# with a time change between the first and the second rounds of the elections. 715 716# From Steffen Thorsen (2007-09-20): 717# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 718# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 719 720# From Paul Schulze (2008-06-24): 721# ...by law number 11.662 of April 24, 2008 (published in the "Diario 722# Oficial da Uniao"...) in Brazil there are changes in the timezones, 723# effective today (00:00am at June 24, 2008) as follows: 724# 725# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 726# part of the Amazonas state that had this timezone now being put to the 727# timezone UTC+4 728# b) The whole Para state now is put at timezone UTC+3, instead of just 729# part of it, as was before. 730# 731# This change follows a proposal of senator Tiao Viana of Acre state, that 732# proposed it due to concerns about open television channels displaying 733# programs inappropriate to youths in the states that had the timezone 734# UTC+5 too early in the night. In the occasion, some more corrections 735# were proposed, trying to unify the timezones of any given state. This 736# change modifies timezone rules defined in decree 2.784 of 18 June, 737# 1913. 738 739# From Rodrigo Severo (2008-06-24): 740# Just correcting the URL: 741# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 742# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 743# </a> 744# 745# As a result of the above Decree I believe the America/Rio_Branco 746# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 747# be created to represent the...west side of the Para State. I 748# suggest this new timezone be called Santarem as the most 749# important/populated city in the affected area. 750# 751# This new timezone would be the same as the Rio_Branco timezone up to 752# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 753 754# From Alex Krivenyshev (2008-06-24): 755# This is a quick reference page for New and Old Brazil Time Zones map. 756# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 757# http://www.worldtimezone.com/brazil-time-new-old.php 758# </a> 759# 760# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 761# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 762# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 763 764# From Paul Eggert (2002-10-10): 765# The official decrees referenced below are mostly taken from 766# <a href="http://pcdsh01.on.br/DecHV.html"> 767# Decretos sobre o Horario de Verao no Brasil 768# </a>. 769 770# From Steffen Thorsen (2008-08-29): 771# As announced by the government and many newspapers in Brazil late 772# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 773# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 774# past years experience with the elections, there was a good chance that 775# the start was postponed to November, but it did not happen this year. 776# 777# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 778# 779# An official page about it: 780# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 781# http://www.mme.gov.br/site/news/detail.do?newsId=16722 782# </a> 783# Note that this link does not always work directly, but must be accessed 784# by going to 785# <a href="http://www.mme.gov.br/first"> 786# http://www.mme.gov.br/first 787# </a> 788# 789# One example link that works directly: 790# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 791# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 792# (Portuguese) 793# </a> 794# 795# We have a written a short article about it as well: 796# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 797# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 798# </a> 799# 800# From Alexander Krivenyshev (2011-10-04): 801# State Bahia will return to Daylight savings time this year after 8 years off. 802# The announcement was made by Governor Jaques Wagner in an interview to a 803# television station in Salvador. 804 805# In Portuguese: 806# <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html"> 807# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 808# </a> and 809# <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html"> 810# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 811# </a> 812 813# From Guilherme Bernardes Rodrigues (2011-10-07): 814# There is news in the media, however there is still no decree about it. 815# I just send a e-mail to Zulmira Brand�o at 816# <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the 817# oficial agency about time in Brazil, and she confirmed that the old rule is 818# still in force. 819 820# From Guilherme Bernardes Rodrigues (2011-10-14) 821# It's official, the President signed a decree that includes Bahia in summer 822# time. 823# [ and in a second message (same day): ] 824# I found the decree. 825# 826# DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 827# Link : 828# <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6"> 829# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 830# </a> 831 832 833# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 834# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 835# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 836Rule Brazil 1931 only - Oct 3 11:00 1:00 S 837Rule Brazil 1932 1933 - Apr 1 0:00 0 - 838Rule Brazil 1932 only - Oct 3 0:00 1:00 S 839# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 840# revoked DST. 841# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 842# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 843Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 844Rule Brazil 1950 only - Apr 16 1:00 0 - 845Rule Brazil 1951 1952 - Apr 1 0:00 0 - 846# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 847Rule Brazil 1953 only - Mar 1 0:00 0 - 848# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 849# revoked DST. 850# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 851# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 852# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 853# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 854# extended the above decree to all of the national territory on 12-09. 855Rule Brazil 1963 only - Dec 9 0:00 1:00 S 856# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 857# extended summer time by one day to 1964-03-01 00:00 (start of school). 858Rule Brazil 1964 only - Mar 1 0:00 0 - 859# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 860Rule Brazil 1965 only - Jan 31 0:00 1:00 S 861Rule Brazil 1965 only - Mar 31 0:00 0 - 862# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 863Rule Brazil 1965 only - Dec 1 0:00 1:00 S 864# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 865Rule Brazil 1966 1968 - Mar 1 0:00 0 - 866Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 867# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 868# revoked DST. 869# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 870Rule Brazil 1985 only - Nov 2 0:00 1:00 S 871# Decree 92,310 (1986-01-21) 872# Decree 92,463 (1986-03-13) 873Rule Brazil 1986 only - Mar 15 0:00 0 - 874# Decree 93,316 (1986-10-01) 875Rule Brazil 1986 only - Oct 25 0:00 1:00 S 876Rule Brazil 1987 only - Feb 14 0:00 0 - 877# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 878Rule Brazil 1987 only - Oct 25 0:00 1:00 S 879Rule Brazil 1988 only - Feb 7 0:00 0 - 880# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 881# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 882Rule Brazil 1988 only - Oct 16 0:00 1:00 S 883Rule Brazil 1989 only - Jan 29 0:00 0 - 884# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 885# with the same exceptions 886Rule Brazil 1989 only - Oct 15 0:00 1:00 S 887Rule Brazil 1990 only - Feb 11 0:00 0 - 888# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 889# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 890# Decree 99,629 (1990-10-19) adds BA, MT. 891Rule Brazil 1990 only - Oct 21 0:00 1:00 S 892Rule Brazil 1991 only - Feb 17 0:00 0 - 893# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 894# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 895Rule Brazil 1991 only - Oct 20 0:00 1:00 S 896Rule Brazil 1992 only - Feb 9 0:00 0 - 897# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 898# adopted by same states. 899Rule Brazil 1992 only - Oct 25 0:00 1:00 S 900Rule Brazil 1993 only - Jan 31 0:00 0 - 901# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 902# adopted by same states, plus AM. 903# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 904# web page corrected 2004-01-07) adopted by same states, minus AM. 905# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 906# adopted by same states, plus MT and TO. 907# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 908# adds AL, SE. 909Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 910Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 911Rule Brazil 1996 only - Feb 11 0:00 0 - 912# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 913# adopted by same states, minus AL, SE. 914Rule Brazil 1996 only - Oct 6 0:00 1:00 S 915Rule Brazil 1997 only - Feb 16 0:00 0 - 916# From Daniel C. Sobral (1998-02-12): 917# In 1997, the DS began on October 6. The stated reason was that 918# because international television networks ignored Brazil's policy on DS, 919# they bought the wrong times on satellite for coverage of Pope's visit. 920# This year, the ending date of DS was postponed to March 1 921# to help dealing with the shortages of electric power. 922# 923# Decree 2,317 (1997-09-04), adopted by same states. 924Rule Brazil 1997 only - Oct 6 0:00 1:00 S 925# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 926# (1998-02-10) 927Rule Brazil 1998 only - Mar 1 0:00 0 - 928# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 929# adopted by the same states as before. 930Rule Brazil 1998 only - Oct 11 0:00 1:00 S 931Rule Brazil 1999 only - Feb 21 0:00 0 - 932# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 933# (1999-08-23) adopted by same states. 934# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 935# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 936Rule Brazil 1999 only - Oct 3 0:00 1:00 S 937Rule Brazil 2000 only - Feb 27 0:00 0 - 938# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 939# adopted by the same states as before. 940# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 941# repeals DST in PE and RR, effective 2000-10-15 00:00. 942# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 943# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 944# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 945# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 946Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 947Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 948# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 949# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 950Rule Brazil 2002 only - Nov 3 0:00 1:00 S 951# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 952# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 953Rule Brazil 2003 only - Oct 19 0:00 1:00 S 954# Decree 5,223 (2004-10-01) reestablishes DST in MT. 955# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 956Rule Brazil 2004 only - Nov 2 0:00 1:00 S 957# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 958# adopted by the same states as before. 959Rule Brazil 2005 only - Oct 16 0:00 1:00 S 960# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 961# adopted by the same states as before. 962Rule Brazil 2006 only - Nov 5 0:00 1:00 S 963Rule Brazil 2007 only - Feb 25 0:00 0 - 964# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 965# adopted by the same states as before. 966Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 967# From Frederico A. C. Neves (2008-09-10): 968# Acording to this decree 969# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 970# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 971# </a> 972# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 973# 3rd Feb Sunday. There is an exception on the return date when this is 974# the Carnival Sunday then the return date will be the next Sunday... 975Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 976Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 977Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 978Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 979Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 980Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 981Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 982Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 983Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 984Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 985Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 986Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 987Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 988# From Arthur David Olson (2008-09-29): 989# The next is wrong in some years but is better than nothing. 990Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 991 992# The latest ruleset listed above says that the following states observe DST: 993# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 994 995# Zone NAME GMTOFF RULES FORMAT [UNTIL] 996# 997# Fernando de Noronha (administratively part of PE) 998Zone America/Noronha -2:09:40 - LMT 1914 999 -2:00 Brazil FN%sT 1990 Sep 17 1000 -2:00 - FNT 1999 Sep 30 1001 -2:00 Brazil FN%sT 2000 Oct 15 1002 -2:00 - FNT 2001 Sep 13 1003 -2:00 Brazil FN%sT 2002 Oct 1 1004 -2:00 - FNT 1005# Other Atlantic islands have no permanent settlement. 1006# These include Trindade and Martin Vaz (administratively part of ES), 1007# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 1008# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 1009# it also included the Penedos. 1010# 1011# Amapa (AP), east Para (PA) 1012# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 1013# The division between east and west Para is the river Xingu. 1014# In the north a very small part from the river Javary (now Jari I guess, 1015# the border with Amapa) to the Amazon, then to the Xingu. 1016Zone America/Belem -3:13:56 - LMT 1914 1017 -3:00 Brazil BR%sT 1988 Sep 12 1018 -3:00 - BRT 1019# 1020# west Para (PA) 1021# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 1022Zone America/Santarem -3:38:48 - LMT 1914 1023 -4:00 Brazil AM%sT 1988 Sep 12 1024 -4:00 - AMT 2008 Jun 24 00:00 1025 -3:00 - BRT 1026# 1027# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 1028# Paraiba (PB) 1029Zone America/Fortaleza -2:34:00 - LMT 1914 1030 -3:00 Brazil BR%sT 1990 Sep 17 1031 -3:00 - BRT 1999 Sep 30 1032 -3:00 Brazil BR%sT 2000 Oct 22 1033 -3:00 - BRT 2001 Sep 13 1034 -3:00 Brazil BR%sT 2002 Oct 1 1035 -3:00 - BRT 1036# 1037# Pernambuco (PE) (except Atlantic islands) 1038Zone America/Recife -2:19:36 - LMT 1914 1039 -3:00 Brazil BR%sT 1990 Sep 17 1040 -3:00 - BRT 1999 Sep 30 1041 -3:00 Brazil BR%sT 2000 Oct 15 1042 -3:00 - BRT 2001 Sep 13 1043 -3:00 Brazil BR%sT 2002 Oct 1 1044 -3:00 - BRT 1045# 1046# Tocantins (TO) 1047Zone America/Araguaina -3:12:48 - LMT 1914 1048 -3:00 Brazil BR%sT 1990 Sep 17 1049 -3:00 - BRT 1995 Sep 14 1050 -3:00 Brazil BR%sT 2003 Sep 24 1051 -3:00 - BRT 1052# 1053# Alagoas (AL), Sergipe (SE) 1054Zone America/Maceio -2:22:52 - LMT 1914 1055 -3:00 Brazil BR%sT 1990 Sep 17 1056 -3:00 - BRT 1995 Oct 13 1057 -3:00 Brazil BR%sT 1996 Sep 4 1058 -3:00 - BRT 1999 Sep 30 1059 -3:00 Brazil BR%sT 2000 Oct 22 1060 -3:00 - BRT 2001 Sep 13 1061 -3:00 Brazil BR%sT 2002 Oct 1 1062 -3:00 - BRT 1063# 1064# Bahia (BA) 1065# There are too many Salvadors elsewhere, so use America/Bahia instead 1066# of America/Salvador. 1067Zone America/Bahia -2:34:04 - LMT 1914 1068 -3:00 Brazil BR%sT 2003 Sep 24 1069 -3:00 - BRT 2011 Oct 16 1070 -3:00 Brazil BR%sT 1071# 1072# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 1073# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 1074# Santa Catarina (SC), Rio Grande do Sul (RS) 1075Zone America/Sao_Paulo -3:06:28 - LMT 1914 1076 -3:00 Brazil BR%sT 1963 Oct 23 00:00 1077 -3:00 1:00 BRST 1964 1078 -3:00 Brazil BR%sT 1079# 1080# Mato Grosso do Sul (MS) 1081Zone America/Campo_Grande -3:38:28 - LMT 1914 1082 -4:00 Brazil AM%sT 1083# 1084# Mato Grosso (MT) 1085Zone America/Cuiaba -3:44:20 - LMT 1914 1086 -4:00 Brazil AM%sT 2003 Sep 24 1087 -4:00 - AMT 2004 Oct 1 1088 -4:00 Brazil AM%sT 1089# 1090# Rondonia (RO) 1091Zone America/Porto_Velho -4:15:36 - LMT 1914 1092 -4:00 Brazil AM%sT 1988 Sep 12 1093 -4:00 - AMT 1094# 1095# Roraima (RR) 1096Zone America/Boa_Vista -4:02:40 - LMT 1914 1097 -4:00 Brazil AM%sT 1988 Sep 12 1098 -4:00 - AMT 1999 Sep 30 1099 -4:00 Brazil AM%sT 2000 Oct 15 1100 -4:00 - AMT 1101# 1102# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1103# The great circle line from Tabatinga to Porto Acre divides 1104# east from west Amazonas. 1105Zone America/Manaus -4:00:04 - LMT 1914 1106 -4:00 Brazil AM%sT 1988 Sep 12 1107 -4:00 - AMT 1993 Sep 28 1108 -4:00 Brazil AM%sT 1994 Sep 22 1109 -4:00 - AMT 1110# 1111# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1112# Eirunepe, Envira, Ipixuna 1113Zone America/Eirunepe -4:39:28 - LMT 1914 1114 -5:00 Brazil AC%sT 1988 Sep 12 1115 -5:00 - ACT 1993 Sep 28 1116 -5:00 Brazil AC%sT 1994 Sep 22 1117 -5:00 - ACT 2008 Jun 24 00:00 1118 -4:00 - AMT 1119# 1120# Acre (AC) 1121Zone America/Rio_Branco -4:31:12 - LMT 1914 1122 -5:00 Brazil AC%sT 1988 Sep 12 1123 -5:00 - ACT 2008 Jun 24 00:00 1124 -4:00 - AMT 1125 1126# Chile 1127 1128# From Eduardo Krell (1995-10-19): 1129# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1130# of October.... The law is the same for March and October. 1131# (1998-09-29): 1132# Because of the drought this year, the government decided to go into 1133# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1134# (unless there's another dry season next year, I guess). 1135 1136# From Julio I. Pacheco Troncoso (1999-03-18): 1137# Because of the same drought, the government decided to end DST later, 1138# on April 3, (one-time change). 1139 1140# From Oscar van Vlijmen (2006-10-08): 1141# http://www.horaoficial.cl/cambio.htm 1142 1143# From Jesper Norgaard Welen (2006-10-08): 1144# I think that there are some obvious mistakes in the suggested link 1145# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1146# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1147# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1148# anyhow it clears up some doubts too. 1149 1150# From Paul Eggert (2006-12-27): 1151# The following data for Chile and America/Santiago are from 1152# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1153# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1154# & Pottenger, except with DST transitions after 1932 cloned from 1155# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1156# but we have no other source. 1157 1158# From German Poo-Caaman~o (2008-03-03): 1159# Due to drought, Chile extends Daylight Time in three weeks. This 1160# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1161# and Saturday 3/29 at 22:00 for Pacific/Easter) 1162# The Supreme Decree is located at 1163# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1164# http://www.shoa.cl/servicios/supremo316.pdf 1165# </a> 1166# and the instructions for 2008 are located in: 1167# <a href="http://www.horaoficial.cl/cambio.htm"> 1168# http://www.horaoficial.cl/cambio.htm 1169# </a>. 1170 1171# From Jose Miguel Garrido (2008-03-05): 1172# ... 1173# You could see the announces of the change on 1174# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1175# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1176# </a>. 1177 1178# From Angel Chiang (2010-03-04): 1179# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1180# <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> 1181# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1182# </a> 1183# (in Spanish, last paragraph). 1184# 1185# This is breaking news. There should be more information available later. 1186 1187# From Arthur Daivd Olson (2010-03-06): 1188# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1189 1190# From Glenn Eychaner (2011-03-02): [geychaner@mac.com] 1191# It appears that the Chilean government has decided to postpone the 1192# change from summer time to winter time again, by three weeks to April 1193# 2nd: 1194# <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651"> 1195# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 1196# </a> 1197# 1198# This is not yet reflected in the offical "cambio de hora" site, but 1199# probably will be soon: 1200# <a href="http://www.horaoficial.cl/cambio.htm"> 1201# http://www.horaoficial.cl/cambio.htm 1202# </a> 1203 1204# From Arthur David Olson (2011-03-02): 1205# The emol.com article mentions a water shortage as the cause of the 1206# postponement, which may mean that it's not a permanent change. 1207 1208# From Glenn Eychaner (2011-03-28): 1209# The article: 1210# <a href="http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}"> 1211# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1212# </a> 1213# 1214# In English: 1215# Chile's clocks will go back an hour this year on the 7th of May instead 1216# of this Saturday. They will go forward again the 3rd Saturday in 1217# August, not in October as they have since 1968. This is a pilot plan 1218# which will be reevaluated in 2012. 1219 1220# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1221# As stated in the website of the Chilean Energy Ministry 1222# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1223# The Chilean Government has decided to postpone the entrance into winter time 1224# (to leave DST) from March 11 2012 to April 28th 2012. The decision has not 1225# been yet formalized but it will within the next days. 1226# Quote from the website communication: 1227# 1228# 6. For the year 2012, the dates of entry into winter time will be as follows: 1229# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1230# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1231# of the same day. 1232# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1233# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1234# 01:00 on September 2. 1235# 1236# Note that...this is yet another "temporary" change that will be reevaluated 1237# AGAIN in 2013. 1238 1239# NOTE: ChileAQ rules for Antarctic bases are stored separately in the 1240# 'antarctica' file. 1241 1242# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1243Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1244Rule Chile 1928 1932 - Apr 1 0:00 0 - 1245Rule Chile 1942 only - Jun 1 4:00u 0 - 1246Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1247Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1248Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1249Rule Chile 1947 only - Apr 1 4:00u 0 - 1250Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1251Rule Chile 1969 only - Mar 30 3:00u 0 - 1252Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1253Rule Chile 1970 only - Mar 29 3:00u 0 - 1254Rule Chile 1971 only - Mar 14 3:00u 0 - 1255Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1256Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1257Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1258Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1259Rule Chile 1987 only - Apr 12 3:00u 0 - 1260Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1261Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1262Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1263Rule Chile 1990 only - Mar 18 3:00u 0 - 1264Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1265Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1266Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1267Rule Chile 1997 only - Mar 30 3:00u 0 - 1268Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1269Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1270Rule Chile 1999 only - Apr 4 3:00u 0 - 1271Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1272Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1273# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1274# which is used below in specifying the transition. 1275Rule Chile 2008 only - Mar 30 3:00u 0 - 1276Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1277Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1278Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1279Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1280Rule Chile 2012 only - Apr Sun>=23 3:00u 0 - 1281Rule Chile 2012 only - Sep Sun>=2 4:00u 1:00 S 1282Rule Chile 2013 max - Mar Sun>=9 3:00u 0 - 1283Rule Chile 2013 max - Oct Sun>=9 4:00u 1:00 S 1284# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1285# (1996-09) says 1998-03-08. Ignore these. 1286# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1287Zone America/Santiago -4:42:46 - LMT 1890 1288 -4:42:46 - SMT 1910 # Santiago Mean Time 1289 -5:00 - CLT 1916 Jul 1 # Chile Time 1290 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1291 -4:00 - CLT 1919 Jul 1 # Chile Time 1292 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1293 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1294 -4:00 Chile CL%sT 1295Zone Pacific/Easter -7:17:44 - LMT 1890 1296 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1297 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1298 -6:00 Chile EAS%sT 1299# 1300# Sala y Gomez Island is like Pacific/Easter. 1301# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1302# San Felix, and Antarctic bases, are like America/Santiago. 1303 1304# Colombia 1305# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1306Rule CO 1992 only - May 3 0:00 1:00 S 1307Rule CO 1993 only - Apr 4 0:00 0 - 1308# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1309Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1310 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1311 -5:00 CO CO%sT # Colombia Time 1312# Malpelo, Providencia, San Andres 1313# no information; probably like America/Bogota 1314 1315# Curacao 1316# 1317# From Paul Eggert (2006-03-22): 1318# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1319# -4:00 since standard time was introduced on 1912-03-02; and that 1320# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1321# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1322# Saba Island has been like Curacao. 1323# This all predates our 1970 cutoff, though. 1324# 1325# By July 2007 Curacao and St Maarten are planned to become 1326# associated states within the Netherlands, much like Aruba; 1327# Bonaire, Saba and St Eustatius would become directly part of the 1328# Netherlands as Kingdom Islands. This won't affect their time zones 1329# though, as far as we know. 1330# 1331# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1332Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1333 -4:30 - ANT 1965 # Netherlands Antilles Time 1334 -4:00 - AST 1335 1336# From Arthur David Olson (2011-06-15): 1337# At least for now, use links for places with new iso3166 codes. 1338# The name "Lower Prince's Quarter" is both longer than fourteen charaters 1339# and contains an apostrophe; use "Lower_Princes" below. 1340 1341Link America/Curacao America/Lower_Princes # Sint Maarten 1342Link America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba 1343 1344# Ecuador 1345# 1346# From Paul Eggert (2007-03-04): 1347# Apparently Ecuador had a failed experiment with DST in 1992. 1348# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1349# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1350# talk about "hora Sixto". Leave this alone for now, as we have no data. 1351# 1352# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1353Zone America/Guayaquil -5:19:20 - LMT 1890 1354 -5:14:00 - QMT 1931 # Quito Mean Time 1355 -5:00 - ECT # Ecuador Time 1356Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1357 -5:00 - ECT 1986 1358 -6:00 - GALT # Galapagos Time 1359 1360# Falklands 1361 1362# From Paul Eggert (2006-03-22): 1363# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1364# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1365 1366# From Falkland Islands Government Office, London (2001-01-22) 1367# via Jesper Norgaard: 1368# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1369# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1370# September. It is anticipated that the clocks will revert back at 2 1371# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1372# Sunday 1 September. 1373 1374# From Rives McDow (2001-02-13): 1375# 1376# I have communicated several times with people there, and the last 1377# time I had communications that was helpful was in 1998. Here is 1378# what was said then: 1379# 1380# "The general rule was that Stanley used daylight saving and the Camp 1381# did not. However for various reasons many people in the Camp have 1382# started to use daylight saving (known locally as 'Stanley Time') 1383# There is no rule as to who uses daylight saving - it is a matter of 1384# personal choice and so it is impossible to draw a map showing who 1385# uses it and who does not. Any list would be out of date as soon as 1386# it was produced. This year daylight saving ended on April 18/19th 1387# and started again on September 12/13th. I do not know what the rule 1388# is, but can find out if you like. We do not change at the same time 1389# as UK or Chile." 1390# 1391# I did have in my notes that the rule was "Second Saturday in Sep at 1392# 0:00 until third Saturday in Apr at 0:00". I think that this does 1393# not agree in some cases with Shanks; is this true? 1394# 1395# Also, there is no mention in the list that some areas in the 1396# Falklands do not use DST. I have found in my communications there 1397# that these areas are on the western half of East Falkland and all of 1398# West Falkland. Stanley is the only place that consistently observes 1399# DST. Again, as in other places in the world, the farmers don't like 1400# it. West Falkland is almost entirely sheep farmers. 1401# 1402# I know one lady there that keeps a list of which farm keeps DST and 1403# which doesn't each year. She runs a shop in Stanley, and says that 1404# the list changes each year. She uses it to communicate to her 1405# customers, catching them when they are home for lunch or dinner. 1406 1407# From Paul Eggert (2001-03-05): 1408# For now, we'll just record the time in Stanley, since we have no 1409# better info. 1410 1411# From Steffen Thorsen (2011-04-01): 1412# The Falkland Islands will not turn back clocks this winter, but stay on 1413# daylight saving time. 1414# 1415# One source: 1416# <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> 1417# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1418# </a> 1419# 1420# We have gotten this confirmed by a clerk of the legislative assembly: 1421# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1422# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1423# hours) on the first Sunday of September at 0200hrs. 1424# 1425# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1426# will not revert to local mean time, but clocks will remain on Summer 1427# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1428# change to local time following the trial period will be notified. 1429# 1430# From Andrew Newman (2012-02-24) 1431# A letter from Justin McPhee, Chief Executive, 1432# Cable & Wireless Falkland Islands (dated 2012-02-22) 1433# states... 1434# The current Atlantic/Stanley entry under South America expects the 1435# clocks to go back to standard Falklands Time (FKT) on the 15th April. 1436# The database entry states that in 2011 Stanley was staying on fixed 1437# summer time on a trial basis only. FIG need to contact IANA and/or 1438# the maintainers of the database to inform them we're adopting 1439# the same policy this year and suggest recommendations for future years. 1440# 1441# For now we will assume permanent summer time for the Falklands 1442# until advised differently (to apply for 2012 and beyond, after the 2011 1443# experiment was apparently successful.) 1444# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1445Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1446Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1447Rule Falk 1939 only - Oct 1 0:00 1:00 S 1448Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1449Rule Falk 1943 only - Jan 1 0:00 0 - 1450Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1451Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1452Rule Falk 1984 only - Sep 16 0:00 1:00 S 1453Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1454Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1455Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1456Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1457# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1458Zone Atlantic/Stanley -3:51:24 - LMT 1890 1459 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1460 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1461 -3:00 Falk FK%sT 1985 Sep 15 1462 -4:00 Falk FK%sT 2010 Sep 5 02:00 1463 -3:00 - FKST 1464 1465# French Guiana 1466# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1467Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1468 -4:00 - GFT 1967 Oct # French Guiana Time 1469 -3:00 - GFT 1470 1471# Guyana 1472# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1473Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1474 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1475 -3:45 - GYT 1975 Jul 31 # Guyana Time 1476 -3:00 - GYT 1991 1477# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1478 -4:00 - GYT 1479 1480# Paraguay 1481# From Paul Eggert (2006-03-22): 1482# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1483# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1484# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1485# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1486Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1487Rule Para 1975 1978 - Mar 1 0:00 0 - 1488Rule Para 1979 1991 - Apr 1 0:00 0 - 1489Rule Para 1989 only - Oct 22 0:00 1:00 S 1490Rule Para 1990 only - Oct 1 0:00 1:00 S 1491Rule Para 1991 only - Oct 6 0:00 1:00 S 1492Rule Para 1992 only - Mar 1 0:00 0 - 1493Rule Para 1992 only - Oct 5 0:00 1:00 S 1494Rule Para 1993 only - Mar 31 0:00 0 - 1495Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1496Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1497Rule Para 1996 only - Mar 1 0:00 0 - 1498# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1499# From Steffen Thorsen (2000-10-02): 1500# I have three independent reports that Paraguay changed to DST this Sunday 1501# (10-01). 1502# 1503# Translated by Gwillim Law (2001-02-27) from 1504# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1505# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1506# </a>: 1507# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1508# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1509# system has been operating for several years. Formerly there was a separate 1510# decree each year; the new law has the same effect, but permanently. Every 1511# year, the time will change on the first Sunday of October; likewise, the 1512# clock will be set back on the first Sunday of March. 1513# 1514Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1515# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1516Rule Para 1997 only - Feb lastSun 0:00 0 - 1517# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1518# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1519Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1520# From Rives McDow (2002-02-28): 1521# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1522# dst method to be from the first Sunday in September to the first Sunday in 1523# April. 1524Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1525Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1526# 1527# From Jesper Norgaard Welen (2005-01-02): 1528# There are several sources that claim that Paraguay made 1529# a timezone rule change in autumn 2004. 1530# From Steffen Thorsen (2005-01-05): 1531# Decree 1,867 (2004-03-05) 1532# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1533# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1534Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1535Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1536# From Carlos Raul Perasso (2010-02-18): 1537# By decree number 3958 issued yesterday ( 1538# <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> 1539# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1540# </a> 1541# ) 1542# Paraguay changes its DST schedule, postponing the March rule to April and 1543# modifying the October date. The decree reads: 1544# ... 1545# Art. 1. It is hereby established that from the second Sunday of the month of 1546# April of this year (2010), the official time is to be set back 60 minutes, 1547# and that on the first Sunday of the month of October, it is to be set 1548# forward 60 minutes, in all the territory of the Paraguayan Republic. 1549# ... 1550Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1551Rule Para 2010 max - Apr Sun>=8 0:00 0 - 1552 1553# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1554Zone America/Asuncion -3:50:40 - LMT 1890 1555 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1556 -4:00 - PYT 1972 Oct # Paraguay Time 1557 -3:00 - PYT 1974 Apr 1558 -4:00 Para PY%sT 1559 1560# Peru 1561# 1562# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1563# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1564# When we were in Peru in 1985-1986, they apparently switched over 1565# sometime between December 29 and January 3 while we were on the Amazon. 1566# 1567# From Paul Eggert (2006-03-22): 1568# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1569 1570# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1571Rule Peru 1938 only - Jan 1 0:00 1:00 S 1572Rule Peru 1938 only - Apr 1 0:00 0 - 1573Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1574Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1575Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1576Rule Peru 1986 1987 - Apr 1 0:00 0 - 1577Rule Peru 1990 only - Jan 1 0:00 1:00 S 1578Rule Peru 1990 only - Apr 1 0:00 0 - 1579# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1580Rule Peru 1994 only - Jan 1 0:00 1:00 S 1581Rule Peru 1994 only - Apr 1 0:00 0 - 1582# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1583Zone America/Lima -5:08:12 - LMT 1890 1584 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1585 -5:00 Peru PE%sT # Peru Time 1586 1587# South Georgia 1588# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1589Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1590 -2:00 - GST # South Georgia Time 1591 1592# South Sandwich Is 1593# uninhabited; scientific personnel have wintered 1594 1595# Suriname 1596# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1597Zone America/Paramaribo -3:40:40 - LMT 1911 1598 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1599 -3:40:36 - PMT 1945 Oct # The capital moved? 1600 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1601 -3:30 - SRT 1984 Oct # Suriname Time 1602 -3:00 - SRT 1603 1604# Trinidad and Tobago 1605# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1606Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1607 -4:00 - AST 1608 1609# Uruguay 1610# From Paul Eggert (1993-11-18): 1611# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1612# From Shanks & Pottenger: 1613# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1614# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1615Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1616Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1617Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1618Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1619# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1620Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1621Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1622Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1623# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1624Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1625# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1626# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1627Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1628Rule Uruguay 1942 only - Jan 1 0:00 0 - 1629Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1630Rule Uruguay 1943 only - Mar 14 0:00 0 - 1631Rule Uruguay 1959 only - May 24 0:00 1:00 S 1632Rule Uruguay 1959 only - Nov 15 0:00 0 - 1633Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1634Rule Uruguay 1960 only - Mar 6 0:00 0 - 1635Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1636Rule Uruguay 1965 only - Sep 26 0:00 0 - 1637Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1638Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1639Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1640Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1641Rule Uruguay 1972 only - Aug 15 0:00 0 - 1642Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1643Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1644Rule Uruguay 1976 only - Oct 1 0:00 0 - 1645Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1646Rule Uruguay 1978 only - Apr 1 0:00 0 - 1647Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1648Rule Uruguay 1980 only - May 1 0:00 0 - 1649Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1650Rule Uruguay 1988 only - Mar 14 0:00 0 - 1651Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1652Rule Uruguay 1989 only - Mar 12 0:00 0 - 1653Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1654# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1655# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1656Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1657Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1658Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1659Rule Uruguay 1993 only - Feb 28 0:00 0 - 1660# From Eduardo Cota (2004-09-20): 1661# The uruguayan government has decreed a change in the local time.... 1662# http://www.presidencia.gub.uy/decretos/2004091502.htm 1663Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1664# From Steffen Thorsen (2005-03-11): 1665# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1666# save energy ... it was postponed two weeks.... 1667# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1668Rule Uruguay 2005 only - Mar 27 2:00 0 - 1669# From Eduardo Cota (2005-09-27): 1670# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1671# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1672# 02:00 local time, official time in Uruguay will be at GMT -2. 1673Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1674Rule Uruguay 2006 only - Mar 12 2:00 0 - 1675# From Jesper Norgaard Welen (2006-09-06): 1676# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1677Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1678Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1679# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1680Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1681 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1682 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1683 -3:00 Uruguay UY%sT 1684 1685# Venezuela 1686# 1687# From John Stainforth (2007-11-28): 1688# ... the change for Venezuela originally expected for 2007-12-31 has 1689# been brought forward to 2007-12-09. The official announcement was 1690# published today in the "Gaceta Oficial de la Republica Bolivariana 1691# de Venezuela, numero 38.819" (official document for all laws or 1692# resolution publication) 1693# http://www.globovision.com/news.php?nid=72208 1694 1695# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1696Zone America/Caracas -4:27:44 - LMT 1890 1697 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1698 -4:30 - VET 1965 # Venezuela Time 1699 -4:00 - VET 2007 Dec 9 03:00 1700 -4:30 - VET 1701
