1# $OpenBSD: southamerica,v 1.40 2009/09/28 14:23:51 millert Exp $ 2# <pre> 3# @(#)southamerica 8.37 4# This file is in the public domain, so clarified as of 5# 2009-05-17 by Arthur David Olson. 6 7# This data 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@elsie.nci.nih.gov for general use in the future). 10 11# From Paul Eggert (2006-03-22): 12# A good source for time zone historical data outside the U.S. is 13# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 14# San Diego: ACS Publications, Inc. (2003). 15# 16# Gwillim Law writes that a good source 17# for recent time zone data is the International Air Transport 18# Association's Standard Schedules Information Manual (IATA SSIM), 19# published semiannually. Law sent in several helpful summaries 20# of the IATA's data after 1990. 21# 22# Except where otherwise noted, Shanks & Pottenger is the source for 23# entries through 1990, and IATA SSIM is the source for entries afterwards. 24# 25# Earlier editions of these tables used the North American style (e.g. ARST and 26# ARDT for Argentine Standard and Daylight Time), but the following quote 27# suggests that it's better to use European style (e.g. ART and ARST). 28# I suggest the use of _Summer time_ instead of the more cumbersome 29# _daylight-saving time_. _Summer time_ seems to be in general use 30# in Europe and South America. 31# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 32# H L Mencken, _The American Language: Supplement I_ (1960), p 466 33# 34# Earlier editions of these tables also used the North American style 35# for time zones in Brazil, but this was incorrect, as Brazilians say 36# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 37# the railroad sector, writes (1999-07-06): 38# The subject of time zones is currently a matter of discussion/debate in 39# Brazil. Let's say that "the Brasilia time" is considered the 40# "official time" because Brasilia is the capital city. 41# The other three time zones are called "Brasilia time "minus one" or 42# "plus one" or "plus two". As far as I know there is no such 43# name/designation as "Eastern Time" or "Central Time". 44# So I invented the following (English-language) abbreviations for now. 45# Corrections are welcome! 46# std dst 47# -2:00 FNT FNST Fernando de Noronha 48# -3:00 BRT BRST Brasilia 49# -4:00 AMT AMST Amazon 50# -5:00 ACT ACST Acre 51 52############################################################################### 53 54############################################################################### 55 56# Argentina 57 58# From Bob Devine (1988-01-28): 59# Argentina: first Sunday in October to first Sunday in April since 1976. 60# Double Summer time from 1969 to 1974. Switches at midnight. 61 62# From U. S. Naval Observatory (1988-01-199): 63# ARGENTINA 3 H BEHIND UTC 64 65# From Hernan G. Otero (1995-06-26): 66# I am sending modifications to the Argentine time zone table... 67# AR was chosen because they are the ISO letters that represent Argentina. 68 69# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 70Rule Arg 1930 only - Dec 1 0:00 1:00 S 71Rule Arg 1931 only - Apr 1 0:00 0 - 72Rule Arg 1931 only - Oct 15 0:00 1:00 S 73Rule Arg 1932 1940 - Mar 1 0:00 0 - 74Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 75Rule Arg 1940 only - Jul 1 0:00 1:00 S 76Rule Arg 1941 only - Jun 15 0:00 0 - 77Rule Arg 1941 only - Oct 15 0:00 1:00 S 78Rule Arg 1943 only - Aug 1 0:00 0 - 79Rule Arg 1943 only - Oct 15 0:00 1:00 S 80Rule Arg 1946 only - Mar 1 0:00 0 - 81Rule Arg 1946 only - Oct 1 0:00 1:00 S 82Rule Arg 1963 only - Oct 1 0:00 0 - 83Rule Arg 1963 only - Dec 15 0:00 1:00 S 84Rule Arg 1964 1966 - Mar 1 0:00 0 - 85Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 86Rule Arg 1967 only - Apr 2 0:00 0 - 87Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 88Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 89Rule Arg 1974 only - Jan 23 0:00 1:00 S 90Rule Arg 1974 only - May 1 0:00 0 - 91Rule Arg 1988 only - Dec 1 0:00 1:00 S 92# 93# From Hernan G. Otero (1995-06-26): 94# These corrections were contributed by InterSoft Argentina S.A., 95# obtaining the data from the: 96# Talleres de Hidrografia Naval Argentina 97# (Argentine Naval Hydrography Institute) 98Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 99Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 100# 101# From Hernan G. Otero (1995-06-26): 102# From this moment on, the law that mandated the daylight saving 103# time corrections was derogated and no more modifications 104# to the time zones (for daylight saving) are now made. 105# 106# From Rives McDow (2000-01-10): 107# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 108# which did not result in the switch of a time zone, as they stayed 9 hours 109# from the International Date Line. 110Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 111# From Paul Eggert (2007-12-28): 112# DST was set to expire on March 5, not March 3, but since it was converted 113# to standard time on March 3 it's more convenient for us to pretend that 114# it ended on March 3. 115Rule Arg 2000 only - Mar 3 0:00 0 - 116# 117# From Peter Gradelski via Steffen Thorsen (2000-03-01): 118# We just checked with our Sao Paulo office and they say the government of 119# Argentina decided not to become one of the countries that go on or off DST. 120# So Buenos Aires should be -3 hours from GMT at all times. 121# 122# From Fabian L. Arce Jofre (2000-04-04): 123# The law that claimed DST for Argentina was derogated by President Fernando 124# de la Rua on March 2, 2000, because it would make people spend more energy 125# in the winter time, rather than less. The change took effect on March 3. 126# 127# From Mariano Absatz (2001-06-06): 128# one of the major newspapers here in Argentina said that the 1999 129# Timezone Law (which never was effectively applied) will (would?) be 130# in effect.... The article is at 131# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 132# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 133# 1999-09-17, and published 1999-09-21. The official publication is at: 134# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 135# Regretfully, you have to subscribe (and pay) for the on-line version.... 136# 137# (2001-06-12): 138# the timezone for Argentina will not change next Sunday. 139# Apparently it will do so on Sunday 24th.... 140# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 141# 142# (2001-06-25): 143# Last Friday (yes, the last working day before the date of the change), the 144# Senate annulled the 1999 law that introduced the changes later postponed. 145# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 146# It remains the vote of the Deputies..., but it will be the same.... 147# This kind of things had always been done this way in Argentina. 148# We are still -03:00 all year round in all of the country. 149# 150# From Steffen Thorsen (2007-12-21): 151# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 152# all of the country (all Zone-entries) are affected. News reports like 153# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 154# that Argentina will use DST next year as well, from October to 155# March, although exact rules are not given. 156# 157# From Jesper Norgaard Welen (2007-12-26) 158# The last hurdle of Argentina DST is over, the proposal was approved in 159# the lower chamber too (Deputados) with a vote 192 for and 2 against. 160# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 161# the original scanned proposal, where the dates and the zero hours are 162# clear and unambiguous...This is the article about final approval: 163# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 164# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 165# </a> 166# 167# From Paul Eggert (2007-12-22): 168# For dates after mid-2008, the following rules are my guesses and 169# are quite possibly wrong, but are more likely than no DST at all. 170 171# From Alexander Krivenyshev (2008-09-05): 172# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 173# Argentina will start DST on Sunday October 19, 2008. 174# 175# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 176# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 177# </a> 178# OR 179# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 180# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 181# </a> 182 183# From Rodrigo Severo (2008-10-06): 184# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 185# ... 186# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 187# Hi, there is a problem with timezone-data-2008e and maybe with 188# timezone-data-2008f 189# Argentinian law [Number] 25.155 is no longer valid. 190# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 191# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 192# </a> 193# The new one is law [Number] 26.350 194# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 195# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 196# </a> 197# So there is no summer time in Argentina for now. 198 199# From Mariano Absatz (2008-10-20): 200# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 201# From 2008-10-19 until 2009-03-15 202# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 203# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 204# </a> 205# 206# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 207# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 208# and Tierra del Fuego 209# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 210# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 211# </a> 212# 213# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 214# it will not apply DST either (even when it was not included in Decree 1705/2008) 215# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 216# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 217# </a> 218 219Rule Arg 2007 only - Dec 30 0:00 1:00 S 220Rule Arg 2008 max - Mar Sun>=15 0:00 0 - 221Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S 222 223# From Mariano Absatz (2004-05-21): 224# Today it was officially published that the Province of Mendoza is changing 225# its timezone this winter... starting tomorrow night.... 226# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 227# From Paul Eggert (2004-05-24): 228# It's Law No. 7,210. This change is due to a public power emergency, so for 229# now we'll assume it's for this year only. 230# 231# From Paul Eggert (2006-03-22): 232# <a href="http://www.spicasc.net/horvera.html"> 233# Hora de verano para la Republica Argentina (2003-06-08) 234# </a> says that standard time in Argentina from 1894-10-31 235# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 236# over Shanks & Pottenger. 237# 238# From Mariano Absatz (2004-06-05): 239# These media articles from a major newspaper mostly cover the current state: 240# http://www.lanacion.com.ar/04/05/27/de_604825.asp 241# http://www.lanacion.com.ar/04/05/28/de_605203.asp 242# 243# The following eight (8) provinces pulled clocks back to UTC-04:00 at 244# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 245# Apparently, all nine provinces would go back to UTC-03:00 at the same 246# time in October 17th. 247# 248# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 249# Tierra del Fuego, Tucuman. 250# 251# From Mariano Absatz (2004-06-14): 252# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 253# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 254# annoyance with the change is much higher than the power savings obtained.... 255# 256# From Gwillim Law (2004-06-14): 257# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 258# "The time change in Tierra del Fuego was a conflicted decision from 259# the start. The government had decreed that the measure would take 260# effect on June 1, but a normative error forced the new time to begin 261# three days earlier, from a Saturday to a Sunday.... 262# Our understanding was that the change was originally scheduled to take place 263# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 264# provinces). Sunday was May 30, only two days earlier. So the article 265# contains a contradiction. I would give more credence to the Saturday/Sunday 266# date than the "three days earlier" phrase, and conclude that Tierra del 267# Fuego set its clocks back at 2004-05-30 00:00. 268# 269# From Steffen Thorsen (2004-10-05): 270# The previous law 7210 which changed the province of Mendoza's time zone 271# back in May have been modified slightly in a new law 7277, which set the 272# new end date to 2004-09-26 (original date was 2004-10-17). 273# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 274# 275# From Mariano Absatz (2004-10-05): 276# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 277# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 278# at midnight between Saturday, July 24th and Sunday, July 25th.... 279# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 280# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 281# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 282 283# From Alex Krivenyshev (2008-01-17): 284# Here are articles that Argentina Province San Luis is planning to end DST 285# as earlier as upcoming Monday January 21, 2008 or February 2008: 286# 287# Provincia argentina retrasa reloj y marca diferencia con resto del pais 288# (Argentine Province delayed clock and mark difference with the rest of the 289# country) 290# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 291# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 292# </a> 293# 294# Es inminente que en San Luis atrasen una hora los relojes 295# (It is imminent in San Luis clocks one hour delay) 296# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 297# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 298# </a> 299# 300# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 301# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 302# </a> 303 304# From Jesper Norgaard Welen (2008-01-18): 305# The page of the San Luis provincial government 306# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 307# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 308# </a> 309# confirms what Alex Krivenyshev has earlier sent to the tz 310# emailing list about that San Luis plans to return to standard 311# time much earlier than the rest of the country. It also 312# confirms that upon request the provinces San Juan and Mendoza 313# refused to follow San Luis in this change. 314# 315# The change is supposed to take place Monday the 21.st at 0:00 316# hours. As far as I understand it if this goes ahead, we need 317# a new timezone for San Luis (although there are also documented 318# independent changes in the southamerica file of San Luis in 319# 1990 and 1991 which has not been confirmed). 320 321# From Jesper Norgaard Welen (2008-01-25): 322# Unfortunately the below page has become defunct, about the San Luis 323# time change. Perhaps because it now is part of a group of pages "Most 324# important pages of 2008." 325# 326# You can use 327# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 328# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 329# </a> 330# instead it seems. Or use "Buscador" from the main page of the San Luis 331# government, and fill in "huso" and click OK, and you will get 3 pages 332# from which the first one is identical to the above. 333 334# From Mariano Absatz (2008-01-28): 335# I can confirm that the Province of San Luis (and so far only that 336# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 337# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 338# 1 hour), and they intend to keep UTC-3 as their timezone all year round 339# (that is, unless they change their mind any minute now). 340# 341# So we'll have to add yet another city to 'southamerica' (I think San 342# Luis city is the mos populated city in the Province, so it'd be 343# America/Argentina/San_Luis... of course I can't remember if San Luis's 344# history of particular changes goes along with Mendoza or San Juan :-( 345# (I only remember not being able to collect hard facts about San Luis 346# back in 2004, when these provinces changed to UTC-4 for a few days, I 347# mailed them personally and never got an answer). 348 349# From Paul Eggert (2008-06-30): 350# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 351# from the IATA otherwise. As noted below, Shanks & Pottenger say that 352# America/Cordoba split into 6 subregions during 1991/1992, one of which 353# was America/San_Luis, but we haven't verified this yet so for now we'll 354# keep America/Cordoba a single region rather than splitting it into the 355# other 5 subregions. 356 357# From Mariano Absatz (2009-03-13): 358# Yesterday (with our usual 2-day notice) the Province of San Luis 359# decided that next Sunday instead of "staying" @utc-03:00 they will go 360# to utc-04:00 until the second Saturday in October... 361# 362# The press release is at 363# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 364# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 365# </a> 366# (I couldn't find the decree, but 367# <a href="http://www.sanluis.gov.ar"> 368# www.sanluis.gov.ar 369# <a/> 370# is the official page for the Province Government). 371# 372# There's also a note in only one of the major national papers (La Naci�n) at 373# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 374# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 375# </a> 376# 377# The press release says: 378# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 379# atrasar una hora sus relojes. 380# 381# A partir de entonces, San Luis establecer� el huso horario propio de 382# la Provincia. De esta manera, durante el periodo del calendario anual 383# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 384# domingo de marzo y las 24:00 del segundo s�bado de octubre. 385# Quick&dirty translation 386# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 387# inhabitants) will have to turn back one hour their clocks 388# 389# Since then, San Luis will establish its own Province timezone. Thus, 390# during 2009, this timezone change will run from 00:00 the third Sunday 391# in March until 24:00 of the second Saturday in October. 392 393# From Arthur David Olson (2009-03-16): 394# The unofficial claim at 395# <a href="http://www.timeanddate.com/news/time/san-luis-new-time-zone.html"> 396# http://www.timeanddate.com/news/time/san-luis-new-time-zone.html 397# </a> 398# is that "The province will most likely follow the next daylight saving schedule, 399# which is planned for the second Sunday in October." 400 401# From Alexander Krivenyshev (2009-09-19): 402# Some Argentinian Provinces (Buenos Aires, Entre R�os) are opposing to the 403# Daylight Saving Time for the 2009-2010 season. 404# 405# (Spanish) 406# "El cambio de huso horario en Entre R�os deber� ser aprobado por la 407# Legislatura": 408# <a href="http://www.analisisdigital.com.ar/noticias.php?ed=1&di=0&no=110168"> 409# http://www.analisisdigital.com.ar/noticias.php?ed=1&di=0&no=110168 410# </a> 411# English translation - "The time zone change in Entre Rios must be approved by 412# the Legislature." 413# 414# (Spanish) 415# "Mar del Plata no quiere cambiar la hora." 416# <a href="http://www.mensajeroweb.com.ar/index.php?x=nota/33861/1/mar-del-plata-no-quiere-cambiar-la-hora"> 417# http://www.mensajeroweb.com.ar/index.php?x=nota/33861/1/mar-del-plata-no-quiere-cambiar-la-hora 418# </a> 419# English translation - "Mar del Plata is not to change the time" 420# 421# or 422# (some English translation) 423# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina07.html"> 424# http://www.worldtimezone.com/dst_news/dst_news_argentina07.html 425# </a> 426 427# From Arthur David Olson (2009-09-22): 428# "Mar del Plata no quiere cambiar la hora" translates to 429# "Mar del Plata doesn't want to change the time" 430# (less definitive than "is not to"). 431 432# Zone NAME GMTOFF RULES FORMAT [UNTIL] 433# 434# Buenos Aires (BA), Capital Federal (CF), 435Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 436 -4:16:48 - CMT 1920 May # Cordoba Mean Time 437 -4:00 - ART 1930 Dec 438 -4:00 Arg AR%sT 1969 Oct 5 439 -3:00 Arg AR%sT 1999 Oct 3 440 -4:00 Arg AR%sT 2000 Mar 3 441 -3:00 Arg AR%sT 442# 443# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 444# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 445# 446# Shanks & Pottenger also make the following claims, which we haven't verified: 447# - Formosa switched to -3:00 on 1991-01-07. 448# - Misiones switched to -3:00 on 1990-12-29. 449# - Chaco switched to -3:00 on 1991-01-04. 450# - Santiago del Estero switched to -4:00 on 1991-04-01, 451# then to -3:00 on 1991-04-26. 452# 453Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 454 -4:16:48 - CMT 1920 May 455 -4:00 - ART 1930 Dec 456 -4:00 Arg AR%sT 1969 Oct 5 457 -3:00 Arg AR%sT 1991 Mar 3 458 -4:00 - WART 1991 Oct 20 459 -3:00 Arg AR%sT 1999 Oct 3 460 -4:00 Arg AR%sT 2000 Mar 3 461 -3:00 Arg AR%sT 462# 463# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 464Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 465 -4:16:48 - CMT 1920 May 466 -4:00 - ART 1930 Dec 467 -4:00 Arg AR%sT 1969 Oct 5 468 -3:00 Arg AR%sT 1991 Mar 3 469 -4:00 - WART 1991 Oct 20 470 -3:00 Arg AR%sT 1999 Oct 3 471 -4:00 Arg AR%sT 2000 Mar 3 472 -3:00 Arg AR%sT 2008 Oct 18 473 -3:00 - ART 474# 475# Tucuman (TM) 476Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 477 -4:16:48 - CMT 1920 May 478 -4:00 - ART 1930 Dec 479 -4:00 Arg AR%sT 1969 Oct 5 480 -3:00 Arg AR%sT 1991 Mar 3 481 -4:00 - WART 1991 Oct 20 482 -3:00 Arg AR%sT 1999 Oct 3 483 -4:00 Arg AR%sT 2000 Mar 3 484 -3:00 - ART 2004 Jun 1 485 -4:00 - WART 2004 Jun 13 486 -3:00 Arg AR%sT 487# 488# La Rioja (LR) 489Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 490 -4:16:48 - CMT 1920 May 491 -4:00 - ART 1930 Dec 492 -4:00 Arg AR%sT 1969 Oct 5 493 -3:00 Arg AR%sT 1991 Mar 1 494 -4:00 - WART 1991 May 7 495 -3:00 Arg AR%sT 1999 Oct 3 496 -4:00 Arg AR%sT 2000 Mar 3 497 -3:00 - ART 2004 Jun 1 498 -4:00 - WART 2004 Jun 20 499 -3:00 Arg AR%sT 2008 Oct 18 500 -3:00 - ART 501# 502# San Juan (SJ) 503Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 504 -4:16:48 - CMT 1920 May 505 -4:00 - ART 1930 Dec 506 -4:00 Arg AR%sT 1969 Oct 5 507 -3:00 Arg AR%sT 1991 Mar 1 508 -4:00 - WART 1991 May 7 509 -3:00 Arg AR%sT 1999 Oct 3 510 -4:00 Arg AR%sT 2000 Mar 3 511 -3:00 - ART 2004 May 31 512 -4:00 - WART 2004 Jul 25 513 -3:00 Arg AR%sT 2008 Oct 18 514 -3:00 - ART 515# 516# Jujuy (JY) 517Zone America/Argentina/Jujuy -4:21:12 - 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 1990 Mar 4 522 -4:00 - WART 1990 Oct 28 523 -4:00 1:00 WARST 1991 Mar 17 524 -4:00 - WART 1991 Oct 6 525 -3:00 1:00 ARST 1992 526 -3:00 Arg AR%sT 1999 Oct 3 527 -4:00 Arg AR%sT 2000 Mar 3 528 -3:00 Arg AR%sT 2008 Oct 18 529 -3:00 - ART 530# 531# Catamarca (CT), Chubut (CH) 532Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 533 -4:16:48 - CMT 1920 May 534 -4:00 - ART 1930 Dec 535 -4:00 Arg AR%sT 1969 Oct 5 536 -3:00 Arg AR%sT 1991 Mar 3 537 -4:00 - WART 1991 Oct 20 538 -3:00 Arg AR%sT 1999 Oct 3 539 -4:00 Arg AR%sT 2000 Mar 3 540 -3:00 - ART 2004 Jun 1 541 -4:00 - WART 2004 Jun 20 542 -3:00 Arg AR%sT 2008 Oct 18 543 -3:00 - ART 544# 545# Mendoza (MZ) 546Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 547 -4:16:48 - CMT 1920 May 548 -4:00 - ART 1930 Dec 549 -4:00 Arg AR%sT 1969 Oct 5 550 -3:00 Arg AR%sT 1990 Mar 4 551 -4:00 - WART 1990 Oct 15 552 -4:00 1:00 WARST 1991 Mar 1 553 -4:00 - WART 1991 Oct 15 554 -4:00 1:00 WARST 1992 Mar 1 555 -4:00 - WART 1992 Oct 18 556 -3:00 Arg AR%sT 1999 Oct 3 557 -4:00 Arg AR%sT 2000 Mar 3 558 -3:00 - ART 2004 May 23 559 -4:00 - WART 2004 Sep 26 560 -3:00 Arg AR%sT 2008 Oct 18 561 -3:00 - ART 562# 563# San Luis (SL) 564Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 565 -4:16:48 - CMT 1920 May 566 -4:00 - ART 1930 Dec 567 -4:00 Arg AR%sT 1969 Oct 5 568 -3:00 Arg AR%sT 1990 569 -3:00 1:00 ARST 1990 Mar 14 570 -4:00 - WART 1990 Oct 15 571 -4:00 1:00 WARST 1991 Mar 1 572 -4:00 - WART 1991 Jun 1 573 -3:00 - ART 1999 Oct 3 574 -4:00 1:00 WARST 2000 Mar 3 575 -3:00 - ART 2004 May 31 576 -4:00 - WART 2004 Jul 25 577 -3:00 Arg AR%sT 2008 Jan 21 578 -3:00 - ART 2009 Mar 15 579 -4:00 Arg WAR%sT 580# 581# Santa Cruz (SC) 582Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 583 -4:16:48 - CMT 1920 May # Cordoba Mean Time 584 -4:00 - ART 1930 Dec 585 -4:00 Arg AR%sT 1969 Oct 5 586 -3:00 Arg AR%sT 1999 Oct 3 587 -4:00 Arg AR%sT 2000 Mar 3 588 -3:00 - ART 2004 Jun 1 589 -4:00 - WART 2004 Jun 20 590 -3:00 Arg AR%sT 2008 Oct 18 591 -3:00 - ART 592# 593# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 594Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 595 -4:16:48 - CMT 1920 May # Cordoba Mean Time 596 -4:00 - ART 1930 Dec 597 -4:00 Arg AR%sT 1969 Oct 5 598 -3:00 Arg AR%sT 1999 Oct 3 599 -4:00 Arg AR%sT 2000 Mar 3 600 -3:00 - ART 2004 May 30 601 -4:00 - WART 2004 Jun 20 602 -3:00 Arg AR%sT 2008 Oct 18 603 -3:00 - ART 604 605# Aruba 606# Zone NAME GMTOFF RULES FORMAT [UNTIL] 607Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 608 -4:30 - ANT 1965 # Netherlands Antilles Time 609 -4:00 - AST 610 611# Bolivia 612# Zone NAME GMTOFF RULES FORMAT [UNTIL] 613Zone America/La_Paz -4:32:36 - LMT 1890 614 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 615 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 616 -4:00 - BOT # Bolivia Time 617 618# Brazil 619 620# From Paul Eggert (1993-11-18): 621# The mayor of Rio recently attempted to change the time zone rules 622# just in his city, in order to leave more summer time for the tourist trade. 623# The rule change lasted only part of the day; 624# the federal government refused to follow the city's rules, and business 625# was in a chaos, so the mayor backed down that afternoon. 626 627# From IATA SSIM (1996-02): 628# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 629# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 630# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 631# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 632# [The last three states are new to this issue of the IATA SSIM.] 633 634# From Gwillim Law (1996-10-07): 635# Geography, history (Tocantins was part of Goias until 1989), and other 636# sources of time zone information lead me to believe that AL, SE, and TO were 637# always in BR1, and so the only change was whether or not they observed DST.... 638# The earliest issue of the SSIM I have is 2/91. Each issue from then until 639# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 640# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 641# (UTC-4).... The other two time zones given for Brazil are BR3, which is 642# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 643# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 644# become part of the state of Pernambuco). The boundary between BR1 and BR2 645# has never been clearly stated. They've simply been called East and West. 646# However, some conclusions can be drawn from another IATA manual: the Airline 647# Coding Directory, which lists close to 400 airports in Brazil. For each 648# airport it gives a time zone which is coded to the SSIM. From that 649# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 650# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 651# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 652 653# From Marcos Tadeu (1998-09-27): 654# <a href="http://pcdsh01.on.br/verao1.html"> 655# Brazilian official page 656# </a> 657 658# From Jesper Norgaard (2000-11-03): 659# [For an official list of which regions in Brazil use which time zones, see:] 660# http://pcdsh01.on.br/Fusbr.htm 661# http://pcdsh01.on.br/Fusbrhv.htm 662 663# From Celso Doria via David Madeo (2002-10-09): 664# The reason for the delay this year has to do with elections in Brazil. 665# 666# Unlike in the United States, elections in Brazil are 100% computerized and 667# the results are known almost immediately. Yesterday, it was the first 668# round of the elections when 115 million Brazilians voted for President, 669# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 670# counting (or re-counting) votes anymore and we know there will be a second 671# round for the Presidency and also for some Governors. The 2nd round will 672# take place on October 27th. 673# 674# The reason why the DST will only begin November 3rd is that the thousands 675# of electoral machines used cannot have their time changed, and since the 676# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 677# the Government decided to postpone DST, instead of changing the Constitution 678# (maybe, for the next elections, it will be possible to change the clock)... 679 680# From Rodrigo Severo (2004-10-04): 681# It's just the biannual change made necessary by the much hyped, supposedly 682# modern Brazilian eletronic voting machines which, apparently, can't deal 683# with a time change between the first and the second rounds of the elections. 684 685# From Steffen Thorsen (2007-09-20): 686# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 687# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 688 689# From Paul Schulze (2008-06-24): 690# ...by law number 11.662 of April 24, 2008 (published in the "Diario 691# Oficial da Uniao"...) in Brazil there are changes in the timezones, 692# effective today (00:00am at June 24, 2008) as follows: 693# 694# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 695# part of the Amazonas state that had this timezone now being put to the 696# timezone UTC+4 697# b) The whole Para state now is put at timezone UTC+3, instead of just 698# part of it, as was before. 699# 700# This change follows a proposal of senator Tiao Viana of Acre state, that 701# proposed it due to concerns about open television channels displaying 702# programs inappropriate to youths in the states that had the timezone 703# UTC+5 too early in the night. In the occasion, some more corrections 704# were proposed, trying to unify the timezones of any given state. This 705# change modifies timezone rules defined in decree 2.784 of 18 June, 706# 1913. 707 708# From Rodrigo Severo (2008-06-24): 709# Just correcting the URL: 710# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 711# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 712# </a> 713# 714# As a result of the above Decree I believe the America/Rio_Branco 715# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 716# be created to represent the the west side of the Para State. I 717# suggest this new timezone be called Santarem as the most 718# important/populated city in the affected area. 719# 720# This new timezone would be the same as the Rio_Branco timezone up to 721# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 722 723# From Alex Krivenyshev (2008-06-24): 724# This is a quick reference page for New and Old Brazil Time Zones map. 725# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 726# http://www.worldtimezone.com/brazil-time-new-old.php 727# </a> 728# 729# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 730# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 731# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 732 733# From Paul Eggert (2002-10-10): 734# The official decrees referenced below are mostly taken from 735# <a href="http://pcdsh01.on.br/DecHV.html"> 736# Decretos sobre o Horario de Verao no Brasil 737# </a>. 738 739# From Steffen Thorsen (2008-08-29): 740# As announced by the government and many newspapers in Brazil late 741# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 742# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 743# past years experience with the elections, there was a good chance that 744# the start was postponed to November, but it did not happen this year. 745# 746# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 747# 748# An official page about it: 749# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 750# http://www.mme.gov.br/site/news/detail.do?newsId=16722 751# </a> 752# Note that this link does not always work directly, but must be accessed 753# by going to 754# <a href="http://www.mme.gov.br/first"> 755# http://www.mme.gov.br/first 756# </a> 757# 758# One example link that works directly: 759# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 760# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 761# (Portuguese) 762# </a> 763# 764# We have a written a short article about it as well: 765# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 766# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 767# </a> 768 769# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 770# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 771# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 772Rule Brazil 1931 only - Oct 3 11:00 1:00 S 773Rule Brazil 1932 1933 - Apr 1 0:00 0 - 774Rule Brazil 1932 only - Oct 3 0:00 1:00 S 775# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 776# revoked DST. 777# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 778# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 779Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 780Rule Brazil 1950 only - Apr 16 1:00 0 - 781Rule Brazil 1951 1952 - Apr 1 0:00 0 - 782# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 783Rule Brazil 1953 only - Mar 1 0:00 0 - 784# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 785# revoked DST. 786# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 787# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 788# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 789# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 790# extended the above decree to all of the national territory on 12-09. 791Rule Brazil 1963 only - Dec 9 0:00 1:00 S 792# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 793# extended summer time by one day to 1964-03-01 00:00 (start of school). 794Rule Brazil 1964 only - Mar 1 0:00 0 - 795# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 796Rule Brazil 1965 only - Jan 31 0:00 1:00 S 797Rule Brazil 1965 only - Mar 31 0:00 0 - 798# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 799Rule Brazil 1965 only - Dec 1 0:00 1:00 S 800# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 801Rule Brazil 1966 1968 - Mar 1 0:00 0 - 802Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 803# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 804# revoked DST. 805# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 806Rule Brazil 1985 only - Nov 2 0:00 1:00 S 807# Decree 92,310 (1986-01-21) 808# Decree 92,463 (1986-03-13) 809Rule Brazil 1986 only - Mar 15 0:00 0 - 810# Decree 93,316 (1986-10-01) 811Rule Brazil 1986 only - Oct 25 0:00 1:00 S 812Rule Brazil 1987 only - Feb 14 0:00 0 - 813# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 814Rule Brazil 1987 only - Oct 25 0:00 1:00 S 815Rule Brazil 1988 only - Feb 7 0:00 0 - 816# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 817# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 818Rule Brazil 1988 only - Oct 16 0:00 1:00 S 819Rule Brazil 1989 only - Jan 29 0:00 0 - 820# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 821# with the same exceptions 822Rule Brazil 1989 only - Oct 15 0:00 1:00 S 823Rule Brazil 1990 only - Feb 11 0:00 0 - 824# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 825# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 826# Decree 99,629 (1990-10-19) adds BA, MT. 827Rule Brazil 1990 only - Oct 21 0:00 1:00 S 828Rule Brazil 1991 only - Feb 17 0:00 0 - 829# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 830# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 831Rule Brazil 1991 only - Oct 20 0:00 1:00 S 832Rule Brazil 1992 only - Feb 9 0:00 0 - 833# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 834# adopted by same states. 835Rule Brazil 1992 only - Oct 25 0:00 1:00 S 836Rule Brazil 1993 only - Jan 31 0:00 0 - 837# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 838# adopted by same states, plus AM. 839# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 840# web page corrected 2004-01-07) adopted by same states, minus AM. 841# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 842# adopted by same states, plus MT and TO. 843# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 844# adds AL, SE. 845Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 846Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 847Rule Brazil 1996 only - Feb 11 0:00 0 - 848# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 849# adopted by same states, minus AL, SE. 850Rule Brazil 1996 only - Oct 6 0:00 1:00 S 851Rule Brazil 1997 only - Feb 16 0:00 0 - 852# From Daniel C. Sobral (1998-02-12): 853# In 1997, the DS began on October 6. The stated reason was that 854# because international television networks ignored Brazil's policy on DS, 855# they bought the wrong times on satellite for coverage of Pope's visit. 856# This year, the ending date of DS was postponed to March 1 857# to help dealing with the shortages of electric power. 858# 859# Decree 2,317 (1997-09-04), adopted by same states. 860Rule Brazil 1997 only - Oct 6 0:00 1:00 S 861# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 862# (1998-02-10) 863Rule Brazil 1998 only - Mar 1 0:00 0 - 864# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 865# adopted by the same states as before. 866Rule Brazil 1998 only - Oct 11 0:00 1:00 S 867Rule Brazil 1999 only - Feb 21 0:00 0 - 868# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 869# (1999-08-23) adopted by same states. 870# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 871# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 872Rule Brazil 1999 only - Oct 3 0:00 1:00 S 873Rule Brazil 2000 only - Feb 27 0:00 0 - 874# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 875# adopted by the same states as before. 876# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 877# repeals DST in PE and RR, effective 2000-10-15 00:00. 878# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 879# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 880# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 881# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 882Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 883Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 884# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 885# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 886Rule Brazil 2002 only - Nov 3 0:00 1:00 S 887# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 888# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 889Rule Brazil 2003 only - Oct 19 0:00 1:00 S 890# Decree 5,223 (2004-10-01) reestablishes DST in MT. 891# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 892Rule Brazil 2004 only - Nov 2 0:00 1:00 S 893# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 894# adopted by the same states as before. 895Rule Brazil 2005 only - Oct 16 0:00 1:00 S 896# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 897# adopted by the same states as before. 898Rule Brazil 2006 only - Nov 5 0:00 1:00 S 899Rule Brazil 2007 only - Feb 25 0:00 0 - 900# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 901# adopted by the same states as before. 902Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 903# From Frederico A. C. Neves (2008-09-10): 904# Acording to this decree 905# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 906# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 907# </a> 908# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 909# 3rd Feb Sunday. There is an exception on the return date when this is 910# the Carnival Sunday then the return date will be the next Sunday... 911Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 912Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 913Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 914Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 915Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 916Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 917Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 918Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 919Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 920Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 921Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 922Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 923Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 924# From Arthur David Olson (2008-09-29): 925# The next is wrong in some years but is better than nothing. 926Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 927 928# The latest ruleset listed above says that the following states observe DST: 929# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 930 931# Zone NAME GMTOFF RULES FORMAT [UNTIL] 932# 933# Fernando de Noronha (administratively part of PE) 934Zone America/Noronha -2:09:40 - LMT 1914 935 -2:00 Brazil FN%sT 1990 Sep 17 936 -2:00 - FNT 1999 Sep 30 937 -2:00 Brazil FN%sT 2000 Oct 15 938 -2:00 - FNT 2001 Sep 13 939 -2:00 Brazil FN%sT 2002 Oct 1 940 -2:00 - FNT 941# Other Atlantic islands have no permanent settlement. 942# These include Trindade and Martin Vaz (administratively part of ES), 943# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 944# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 945# it also included the Penedos. 946# 947# Amapa (AP), east Para (PA) 948# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 949# The division between east and west Para is the river Xingu. 950# In the north a very small part from the river Javary (now Jari I guess, 951# the border with Amapa) to the Amazon, then to the Xingu. 952Zone America/Belem -3:13:56 - LMT 1914 953 -3:00 Brazil BR%sT 1988 Sep 12 954 -3:00 - BRT 955# 956# west Para (PA) 957# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 958Zone America/Santarem -3:38:48 - LMT 1914 959 -4:00 Brazil AM%sT 1988 Sep 12 960 -4:00 - AMT 2008 Jun 24 00:00 961 -3:00 - BRT 962# 963# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 964# Paraiba (PB) 965Zone America/Fortaleza -2:34:00 - LMT 1914 966 -3:00 Brazil BR%sT 1990 Sep 17 967 -3:00 - BRT 1999 Sep 30 968 -3:00 Brazil BR%sT 2000 Oct 22 969 -3:00 - BRT 2001 Sep 13 970 -3:00 Brazil BR%sT 2002 Oct 1 971 -3:00 - BRT 972# 973# Pernambuco (PE) (except Atlantic islands) 974Zone America/Recife -2:19:36 - LMT 1914 975 -3:00 Brazil BR%sT 1990 Sep 17 976 -3:00 - BRT 1999 Sep 30 977 -3:00 Brazil BR%sT 2000 Oct 15 978 -3:00 - BRT 2001 Sep 13 979 -3:00 Brazil BR%sT 2002 Oct 1 980 -3:00 - BRT 981# 982# Tocantins (TO) 983Zone America/Araguaina -3:12:48 - LMT 1914 984 -3:00 Brazil BR%sT 1990 Sep 17 985 -3:00 - BRT 1995 Sep 14 986 -3:00 Brazil BR%sT 2003 Sep 24 987 -3:00 - BRT 988# 989# Alagoas (AL), Sergipe (SE) 990Zone America/Maceio -2:22:52 - LMT 1914 991 -3:00 Brazil BR%sT 1990 Sep 17 992 -3:00 - BRT 1995 Oct 13 993 -3:00 Brazil BR%sT 1996 Sep 4 994 -3:00 - BRT 1999 Sep 30 995 -3:00 Brazil BR%sT 2000 Oct 22 996 -3:00 - BRT 2001 Sep 13 997 -3:00 Brazil BR%sT 2002 Oct 1 998 -3:00 - BRT 999# 1000# Bahia (BA) 1001# There are too many Salvadors elsewhere, so use America/Bahia instead 1002# of America/Salvador. 1003Zone America/Bahia -2:34:04 - LMT 1914 1004 -3:00 Brazil BR%sT 2003 Sep 24 1005 -3:00 - BRT 1006# 1007# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 1008# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 1009# Santa Catarina (SC), Rio Grande do Sul (RS) 1010Zone America/Sao_Paulo -3:06:28 - LMT 1914 1011 -3:00 Brazil BR%sT 1963 Oct 23 00:00 1012 -3:00 1:00 BRST 1964 1013 -3:00 Brazil BR%sT 1014# 1015# Mato Grosso do Sul (MS) 1016Zone America/Campo_Grande -3:38:28 - LMT 1914 1017 -4:00 Brazil AM%sT 1018# 1019# Mato Grosso (MT) 1020Zone America/Cuiaba -3:44:20 - LMT 1914 1021 -4:00 Brazil AM%sT 2003 Sep 24 1022 -4:00 - AMT 2004 Oct 1 1023 -4:00 Brazil AM%sT 1024# 1025# Rondonia (RO) 1026Zone America/Porto_Velho -4:15:36 - LMT 1914 1027 -4:00 Brazil AM%sT 1988 Sep 12 1028 -4:00 - AMT 1029# 1030# Roraima (RR) 1031Zone America/Boa_Vista -4:02:40 - LMT 1914 1032 -4:00 Brazil AM%sT 1988 Sep 12 1033 -4:00 - AMT 1999 Sep 30 1034 -4:00 Brazil AM%sT 2000 Oct 15 1035 -4:00 - AMT 1036# 1037# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1038# The great circle line from Tabatinga to Porto Acre divides 1039# east from west Amazonas. 1040Zone America/Manaus -4:00:04 - LMT 1914 1041 -4:00 Brazil AM%sT 1988 Sep 12 1042 -4:00 - AMT 1993 Sep 28 1043 -4:00 Brazil AM%sT 1994 Sep 22 1044 -4:00 - AMT 1045# 1046# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1047# Eirunepe, Envira, Ipixuna 1048Zone America/Eirunepe -4:39:28 - LMT 1914 1049 -5:00 Brazil AC%sT 1988 Sep 12 1050 -5:00 - ACT 1993 Sep 28 1051 -5:00 Brazil AC%sT 1994 Sep 22 1052 -5:00 - ACT 2008 Jun 24 00:00 1053 -4:00 - AMT 1054# 1055# Acre (AC) 1056Zone America/Rio_Branco -4:31:12 - LMT 1914 1057 -5:00 Brazil AC%sT 1988 Sep 12 1058 -5:00 - ACT 2008 Jun 24 00:00 1059 -4:00 - AMT 1060 1061# Chile 1062 1063# From Eduardo Krell (1995-10-19): 1064# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1065# of October.... The law is the same for March and October. 1066# (1998-09-29): 1067# Because of the drought this year, the government decided to go into 1068# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1069# (unless there's another dry season next year, I guess). 1070 1071# From Julio I. Pacheco Troncoso (1999-03-18): 1072# Because of the same drought, the government decided to end DST later, 1073# on April 3, (one-time change). 1074 1075# From Oscar van Vlijmen (2006-10-08): 1076# http://www.horaoficial.cl/cambio.htm 1077 1078# From Jesper Norgaard Welen (2006-10-08): 1079# I think that there are some obvious mistakes in the suggested link 1080# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1081# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1082# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1083# anyhow it clears up some doubts too. 1084 1085# From Paul Eggert (2006-12-27): 1086# The following data for Chile and America/Santiago are from 1087# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1088# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1089# & Pottenger, except with DST transitions after 1932 cloned from 1090# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1091# but we have no other source. 1092 1093# From German Poo-Caaman~o (2008-03-03): 1094# Due to drought, Chile extends Daylight Time in three weeks. This 1095# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1096# and Saturday 3/29 at 22:00 for Pacific/Easter) 1097# The Supreme Decree is located at 1098# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1099# http://www.shoa.cl/servicios/supremo316.pdf 1100# </a> 1101# and the instructions for 2008 are located in: 1102# <a href="http://www.horaoficial.cl/cambio.htm"> 1103# http://www.horaoficial.cl/cambio.htm 1104# </a>. 1105 1106# From Jose Miguel Garrido (2008-03-05): 1107# ... 1108# You could see the announces of the change on 1109# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1110# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1111# </a>. 1112 1113# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1114Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1115Rule Chile 1928 1932 - Apr 1 0:00 0 - 1116Rule Chile 1942 only - Jun 1 4:00u 0 - 1117Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1118Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1119Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1120Rule Chile 1947 only - Apr 1 4:00u 0 - 1121Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1122Rule Chile 1969 only - Mar 30 3:00u 0 - 1123Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1124Rule Chile 1970 only - Mar 29 3:00u 0 - 1125Rule Chile 1971 only - Mar 14 3:00u 0 - 1126Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1127Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1128Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1129Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1130Rule Chile 1987 only - Apr 12 3:00u 0 - 1131Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1132Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1133Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1134Rule Chile 1990 only - Mar 18 3:00u 0 - 1135Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1136Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1137Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1138Rule Chile 1997 only - Mar 30 3:00u 0 - 1139Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1140Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1141Rule Chile 1999 only - Apr 4 3:00u 0 - 1142Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1143Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1144# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1145# which is used below in specifying the transition. 1146Rule Chile 2008 only - Mar 30 3:00u 0 - 1147Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1148# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1149# (1996-09) says 1998-03-08. Ignore these. 1150# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1151Zone America/Santiago -4:42:46 - LMT 1890 1152 -4:42:46 - SMT 1910 # Santiago Mean Time 1153 -5:00 - CLT 1916 Jul 1 # Chile Time 1154 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1155 -4:00 - CLT 1919 Jul 1 # Chile Time 1156 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1157 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1158 -4:00 Chile CL%sT 1159Zone Pacific/Easter -7:17:44 - LMT 1890 1160 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1161 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1162 -6:00 Chile EAS%sT 1163# 1164# Sala y Gomez Island is like Pacific/Easter. 1165# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1166# San Felix, and Antarctic bases, are like America/Santiago. 1167 1168# Colombia 1169# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1170Rule CO 1992 only - May 3 0:00 1:00 S 1171Rule CO 1993 only - Apr 4 0:00 0 - 1172# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1173Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1174 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1175 -5:00 CO CO%sT # Colombia Time 1176# Malpelo, Providencia, San Andres 1177# no information; probably like America/Bogota 1178 1179# Curacao 1180# 1181# From Paul Eggert (2006-03-22): 1182# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1183# -4:00 since standard time was introduced on 1912-03-02; and that 1184# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1185# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1186# Saba Island has been like Curacao. 1187# This all predates our 1970 cutoff, though. 1188# 1189# By July 2007 Curacao and St Maarten are planned to become 1190# associated states within the Netherlands, much like Aruba; 1191# Bonaire, Saba and St Eustatius would become directly part of the 1192# Netherlands as Kingdom Islands. This won't affect their time zones 1193# though, as far as we know. 1194# 1195# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1196Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1197 -4:30 - ANT 1965 # Netherlands Antilles Time 1198 -4:00 - AST 1199 1200# Ecuador 1201# 1202# From Paul Eggert (2007-03-04): 1203# Apparently Ecuador had a failed experiment with DST in 1992. 1204# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1205# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1206# talk about "hora Sixto". Leave this alone for now, as we have no data. 1207# 1208# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1209Zone America/Guayaquil -5:19:20 - LMT 1890 1210 -5:14:00 - QMT 1931 # Quito Mean Time 1211 -5:00 - ECT # Ecuador Time 1212Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1213 -5:00 - ECT 1986 1214 -6:00 - GALT # Galapagos Time 1215 1216# Falklands 1217 1218# From Paul Eggert (2006-03-22): 1219# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1220# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1221 1222# From Falkland Islands Government Office, London (2001-01-22) 1223# via Jesper Norgaard: 1224# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1225# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1226# September. It is anticipated that the clocks will revert back at 2 1227# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1228# Sunday 1 September. 1229 1230# From Rives McDow (2001-02-13): 1231# 1232# I have communicated several times with people there, and the last 1233# time I had communications that was helpful was in 1998. Here is 1234# what was said then: 1235# 1236# "The general rule was that Stanley used daylight saving and the Camp 1237# did not. However for various reasons many people in the Camp have 1238# started to use daylight saving (known locally as 'Stanley Time') 1239# There is no rule as to who uses daylight saving - it is a matter of 1240# personal choice and so it is impossible to draw a map showing who 1241# uses it and who does not. Any list would be out of date as soon as 1242# it was produced. This year daylight saving ended on April 18/19th 1243# and started again on September 12/13th. I do not know what the rule 1244# is, but can find out if you like. We do not change at the same time 1245# as UK or Chile." 1246# 1247# I did have in my notes that the rule was "Second Saturday in Sep at 1248# 0:00 until third Saturday in Apr at 0:00". I think that this does 1249# not agree in some cases with Shanks; is this true? 1250# 1251# Also, there is no mention in the list that some areas in the 1252# Falklands do not use DST. I have found in my communications there 1253# that these areas are on the western half of East Falkland and all of 1254# West Falkland. Stanley is the only place that consistently observes 1255# DST. Again, as in other places in the world, the farmers don't like 1256# it. West Falkland is almost entirely sheep farmers. 1257# 1258# I know one lady there that keeps a list of which farm keeps DST and 1259# which doesn't each year. She runs a shop in Stanley, and says that 1260# the list changes each year. She uses it to communicate to her 1261# customers, catching them when they are home for lunch or dinner. 1262 1263# From Paul Eggert (2001-03-05): 1264# For now, we'll just record the time in Stanley, since we have no 1265# better info. 1266 1267# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1268Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1269Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1270Rule Falk 1939 only - Oct 1 0:00 1:00 S 1271Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1272Rule Falk 1943 only - Jan 1 0:00 0 - 1273Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1274Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1275Rule Falk 1984 only - Sep 16 0:00 1:00 S 1276Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1277Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1278Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1279Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1280# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1281Zone Atlantic/Stanley -3:51:24 - LMT 1890 1282 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1283 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1284 -3:00 Falk FK%sT 1985 Sep 15 1285 -4:00 Falk FK%sT 1286 1287# French Guiana 1288# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1289Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1290 -4:00 - GFT 1967 Oct # French Guiana Time 1291 -3:00 - GFT 1292 1293# Guyana 1294# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1295Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1296 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1297 -3:45 - GYT 1975 Jul 31 # Guyana Time 1298 -3:00 - GYT 1991 1299# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1300 -4:00 - GYT 1301 1302# Paraguay 1303# From Paul Eggert (2006-03-22): 1304# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1305# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1306# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1307# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1308Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1309Rule Para 1975 1978 - Mar 1 0:00 0 - 1310Rule Para 1979 1991 - Apr 1 0:00 0 - 1311Rule Para 1989 only - Oct 22 0:00 1:00 S 1312Rule Para 1990 only - Oct 1 0:00 1:00 S 1313Rule Para 1991 only - Oct 6 0:00 1:00 S 1314Rule Para 1992 only - Mar 1 0:00 0 - 1315Rule Para 1992 only - Oct 5 0:00 1:00 S 1316Rule Para 1993 only - Mar 31 0:00 0 - 1317Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1318Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1319Rule Para 1996 only - Mar 1 0:00 0 - 1320# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1321# From Steffen Thorsen (2000-10-02): 1322# I have three independent reports that Paraguay changed to DST this Sunday 1323# (10-01). 1324# 1325# Translated by Gwillim Law (2001-02-27) from 1326# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1327# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1328# </a>: 1329# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1330# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1331# system has been operating for several years. Formerly there was a separate 1332# decree each year; the new law has the same effect, but permanently. Every 1333# year, the time will change on the first Sunday of October; likewise, the 1334# clock will be set back on the first Sunday of March. 1335# 1336Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1337# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1338Rule Para 1997 only - Feb lastSun 0:00 0 - 1339# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1340# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1341Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1342# From Rives McDow (2002-02-28): 1343# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1344# dst method to be from the first Sunday in September to the first Sunday in 1345# April. 1346Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1347Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1348# 1349# From Jesper Norgaard Welen (2005-01-02): 1350# There are several sources that claim that Paraguay made 1351# a timezone rule change in autumn 2004. 1352# From Steffen Thorsen (2005-01-05): 1353# Decree 1,867 (2004-03-05) 1354# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1355# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1356Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1357Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1358 1359# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1360Zone America/Asuncion -3:50:40 - LMT 1890 1361 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1362 -4:00 - PYT 1972 Oct # Paraguay Time 1363 -3:00 - PYT 1974 Apr 1364 -4:00 Para PY%sT 1365 1366# Peru 1367# 1368# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1369# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1370# When we were in Peru in 1985-1986, they apparently switched over 1371# sometime between December 29 and January 3 while we were on the Amazon. 1372# 1373# From Paul Eggert (2006-03-22): 1374# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1375 1376# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1377Rule Peru 1938 only - Jan 1 0:00 1:00 S 1378Rule Peru 1938 only - Apr 1 0:00 0 - 1379Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1380Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1381Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1382Rule Peru 1986 1987 - Apr 1 0:00 0 - 1383Rule Peru 1990 only - Jan 1 0:00 1:00 S 1384Rule Peru 1990 only - Apr 1 0:00 0 - 1385# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1386Rule Peru 1994 only - Jan 1 0:00 1:00 S 1387Rule Peru 1994 only - Apr 1 0:00 0 - 1388# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1389Zone America/Lima -5:08:12 - LMT 1890 1390 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1391 -5:00 Peru PE%sT # Peru Time 1392 1393# South Georgia 1394# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1395Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1396 -2:00 - GST # South Georgia Time 1397 1398# South Sandwich Is 1399# uninhabited; scientific personnel have wintered 1400 1401# Suriname 1402# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1403Zone America/Paramaribo -3:40:40 - LMT 1911 1404 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1405 -3:40:36 - PMT 1945 Oct # The capital moved? 1406 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1407 -3:30 - SRT 1984 Oct # Suriname Time 1408 -3:00 - SRT 1409 1410# Trinidad and Tobago 1411# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1412Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1413 -4:00 - AST 1414 1415# Uruguay 1416# From Paul Eggert (1993-11-18): 1417# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1418# From Shanks & Pottenger: 1419# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1420# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1421Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1422Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1423Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1424Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1425# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1426Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1427Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1428Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1429# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1430Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1431# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1432# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1433Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1434Rule Uruguay 1942 only - Jan 1 0:00 0 - 1435Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1436Rule Uruguay 1943 only - Mar 14 0:00 0 - 1437Rule Uruguay 1959 only - May 24 0:00 1:00 S 1438Rule Uruguay 1959 only - Nov 15 0:00 0 - 1439Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1440Rule Uruguay 1960 only - Mar 6 0:00 0 - 1441Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1442Rule Uruguay 1965 only - Sep 26 0:00 0 - 1443Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1444Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1445Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1446Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1447Rule Uruguay 1972 only - Aug 15 0:00 0 - 1448Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1449Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1450Rule Uruguay 1976 only - Oct 1 0:00 0 - 1451Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1452Rule Uruguay 1978 only - Apr 1 0:00 0 - 1453Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1454Rule Uruguay 1980 only - May 1 0:00 0 - 1455Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1456Rule Uruguay 1988 only - Mar 14 0:00 0 - 1457Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1458Rule Uruguay 1989 only - Mar 12 0:00 0 - 1459Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1460# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1461# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1462Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1463Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1464Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1465Rule Uruguay 1993 only - Feb 28 0:00 0 - 1466# From Eduardo Cota (2004-09-20): 1467# The uruguayan government has decreed a change in the local time.... 1468# http://www.presidencia.gub.uy/decretos/2004091502.htm 1469Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1470# From Steffen Thorsen (2005-03-11): 1471# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1472# save energy ... it was postponed two weeks.... 1473# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1474Rule Uruguay 2005 only - Mar 27 2:00 0 - 1475# From Eduardo Cota (2005-09-27): 1476# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1477# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1478# 02:00 local time, official time in Uruguay will be at GMT -2. 1479Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1480Rule Uruguay 2006 only - Mar 12 2:00 0 - 1481# From Jesper Norgaard Welen (2006-09-06): 1482# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1483Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1484Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1485# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1486Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1487 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1488 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1489 -3:00 Uruguay UY%sT 1490 1491# Venezuela 1492# 1493# From John Stainforth (2007-11-28): 1494# ... the change for Venezuela originally expected for 2007-12-31 has 1495# been brought forward to 2007-12-09. The official announcement was 1496# published today in the "Gaceta Oficial de la Republica Bolivariana 1497# de Venezuela, numero 38.819" (official document for all laws or 1498# resolution publication) 1499# http://www.globovision.com/news.php?nid=72208 1500 1501# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1502Zone America/Caracas -4:27:44 - LMT 1890 1503 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1504 -4:30 - VET 1965 # Venezuela Time 1505 -4:00 - VET 2007 Dec 9 03:00 1506 -4:30 - VET 1507
