1# <pre> 2# @(#)southamerica 8.36 3# This file is in the public domain, so clarified as of 4# 2009-05-17 by Arthur David Olson. 5 6# This data is by no means authoritative; if you think you know better, 7# go ahead and edit the file (and please send any changes to 8# tz@elsie.nci.nih.gov for general use in the future). 9 10# From Paul Eggert (2006-03-22): 11# A good source for time zone historical data outside the U.S. is 12# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13# San Diego: ACS Publications, Inc. (2003). 14# 15# Gwillim Law writes that a good source 16# for recent time zone data is the International Air Transport 17# Association's Standard Schedules Information Manual (IATA SSIM), 18# published semiannually. Law sent in several helpful summaries 19# of the IATA's data after 1990. 20# 21# Except where otherwise noted, Shanks & Pottenger is the source for 22# entries through 1990, and IATA SSIM is the source for entries afterwards. 23# 24# Earlier editions of these tables used the North American style (e.g. ARST and 25# ARDT for Argentine Standard and Daylight Time), but the following quote 26# suggests that it's better to use European style (e.g. ART and ARST). 27# I suggest the use of _Summer time_ instead of the more cumbersome 28# _daylight-saving time_. _Summer time_ seems to be in general use 29# in Europe and South America. 30# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 31# H L Mencken, _The American Language: Supplement I_ (1960), p 466 32# 33# Earlier editions of these tables also used the North American style 34# for time zones in Brazil, but this was incorrect, as Brazilians say 35# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 36# the railroad sector, writes (1999-07-06): 37# The subject of time zones is currently a matter of discussion/debate in 38# Brazil. Let's say that "the Brasilia time" is considered the 39# "official time" because Brasilia is the capital city. 40# The other three time zones are called "Brasilia time "minus one" or 41# "plus one" or "plus two". As far as I know there is no such 42# name/designation as "Eastern Time" or "Central Time". 43# So I invented the following (English-language) abbreviations for now. 44# Corrections are welcome! 45# std dst 46# -2:00 FNT FNST Fernando de Noronha 47# -3:00 BRT BRST Brasilia 48# -4:00 AMT AMST Amazon 49# -5:00 ACT ACST Acre 50 51############################################################################### 52 53############################################################################### 54 55# Argentina 56 57# From Bob Devine (1988-01-28): 58# Argentina: first Sunday in October to first Sunday in April since 1976. 59# Double Summer time from 1969 to 1974. Switches at midnight. 60 61# From U. S. Naval Observatory (1988-01-199): 62# ARGENTINA 3 H BEHIND UTC 63 64# From Hernan G. Otero (1995-06-26): 65# I am sending modifications to the Argentine time zone table... 66# AR was chosen because they are the ISO letters that represent Argentina. 67 68# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 69Rule Arg 1930 only - Dec 1 0:00 1:00 S 70Rule Arg 1931 only - Apr 1 0:00 0 - 71Rule Arg 1931 only - Oct 15 0:00 1:00 S 72Rule Arg 1932 1940 - Mar 1 0:00 0 - 73Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 74Rule Arg 1940 only - Jul 1 0:00 1:00 S 75Rule Arg 1941 only - Jun 15 0:00 0 - 76Rule Arg 1941 only - Oct 15 0:00 1:00 S 77Rule Arg 1943 only - Aug 1 0:00 0 - 78Rule Arg 1943 only - Oct 15 0:00 1:00 S 79Rule Arg 1946 only - Mar 1 0:00 0 - 80Rule Arg 1946 only - Oct 1 0:00 1:00 S 81Rule Arg 1963 only - Oct 1 0:00 0 - 82Rule Arg 1963 only - Dec 15 0:00 1:00 S 83Rule Arg 1964 1966 - Mar 1 0:00 0 - 84Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 85Rule Arg 1967 only - Apr 2 0:00 0 - 86Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 87Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 88Rule Arg 1974 only - Jan 23 0:00 1:00 S 89Rule Arg 1974 only - May 1 0:00 0 - 90Rule Arg 1988 only - Dec 1 0:00 1:00 S 91# 92# From Hernan G. Otero (1995-06-26): 93# These corrections were contributed by InterSoft Argentina S.A., 94# obtaining the data from the: 95# Talleres de Hidrografia Naval Argentina 96# (Argentine Naval Hydrography Institute) 97Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 98Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 99# 100# From Hernan G. Otero (1995-06-26): 101# From this moment on, the law that mandated the daylight saving 102# time corrections was derogated and no more modifications 103# to the time zones (for daylight saving) are now made. 104# 105# From Rives McDow (2000-01-10): 106# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 107# which did not result in the switch of a time zone, as they stayed 9 hours 108# from the International Date Line. 109Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 110# From Paul Eggert (2007-12-28): 111# DST was set to expire on March 5, not March 3, but since it was converted 112# to standard time on March 3 it's more convenient for us to pretend that 113# it ended on March 3. 114Rule Arg 2000 only - Mar 3 0:00 0 - 115# 116# From Peter Gradelski via Steffen Thorsen (2000-03-01): 117# We just checked with our Sao Paulo office and they say the government of 118# Argentina decided not to become one of the countries that go on or off DST. 119# So Buenos Aires should be -3 hours from GMT at all times. 120# 121# From Fabian L. Arce Jofre (2000-04-04): 122# The law that claimed DST for Argentina was derogated by President Fernando 123# de la Rua on March 2, 2000, because it would make people spend more energy 124# in the winter time, rather than less. The change took effect on March 3. 125# 126# From Mariano Absatz (2001-06-06): 127# one of the major newspapers here in Argentina said that the 1999 128# Timezone Law (which never was effectively applied) will (would?) be 129# in effect.... The article is at 130# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 131# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 132# 1999-09-17, and published 1999-09-21. The official publication is at: 133# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 134# Regretfully, you have to subscribe (and pay) for the on-line version.... 135# 136# (2001-06-12): 137# the timezone for Argentina will not change next Sunday. 138# Apparently it will do so on Sunday 24th.... 139# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 140# 141# (2001-06-25): 142# Last Friday (yes, the last working day before the date of the change), the 143# Senate annulled the 1999 law that introduced the changes later postponed. 144# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 145# It remains the vote of the Deputies..., but it will be the same.... 146# This kind of things had always been done this way in Argentina. 147# We are still -03:00 all year round in all of the country. 148# 149# From Steffen Thorsen (2007-12-21): 150# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 151# all of the country (all Zone-entries) are affected. News reports like 152# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 153# that Argentina will use DST next year as well, from October to 154# March, although exact rules are not given. 155# 156# From Jesper Norgaard Welen (2007-12-26) 157# The last hurdle of Argentina DST is over, the proposal was approved in 158# the lower chamber too (Deputados) with a vote 192 for and 2 against. 159# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 160# the original scanned proposal, where the dates and the zero hours are 161# clear and unambiguous...This is the article about final approval: 162# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 163# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 164# </a> 165# 166# From Paul Eggert (2007-12-22): 167# For dates after mid-2008, the following rules are my guesses and 168# are quite possibly wrong, but are more likely than no DST at all. 169 170# From Alexander Krivenyshev (2008-09-05): 171# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 172# Argentina will start DST on Sunday October 19, 2008. 173# 174# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 175# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176# </a> 177# OR 178# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 179# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 180# </a> 181 182# From Rodrigo Severo (2008-10-06): 183# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 184# ... 185# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 186# Hi, there is a problem with timezone-data-2008e and maybe with 187# timezone-data-2008f 188# Argentinian law [Number] 25.155 is no longer valid. 189# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 190# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 191# </a> 192# The new one is law [Number] 26.350 193# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 194# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 195# </a> 196# So there is no summer time in Argentina for now. 197 198# From Mariano Absatz (2008-10-20): 199# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 200# From 2008-10-19 until 2009-03-15 201# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 202# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 203# </a> 204# 205# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 206# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 207# and Tierra del Fuego 208# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 209# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 210# </a> 211# 212# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 213# it will not apply DST either (even when it was not included in Decree 1705/2008) 214# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 215# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 216# </a> 217 218Rule Arg 2007 only - Dec 30 0:00 1:00 S 219Rule Arg 2008 max - Mar Sun>=15 0:00 0 - 220Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S 221 222# From Mariano Absatz (2004-05-21): 223# Today it was officially published that the Province of Mendoza is changing 224# its timezone this winter... starting tomorrow night.... 225# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 226# From Paul Eggert (2004-05-24): 227# It's Law No. 7,210. This change is due to a public power emergency, so for 228# now we'll assume it's for this year only. 229# 230# From Paul Eggert (2006-03-22): 231# <a href="http://www.spicasc.net/horvera.html"> 232# Hora de verano para la Republica Argentina (2003-06-08) 233# </a> says that standard time in Argentina from 1894-10-31 234# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 235# over Shanks & Pottenger. 236# 237# From Mariano Absatz (2004-06-05): 238# These media articles from a major newspaper mostly cover the current state: 239# http://www.lanacion.com.ar/04/05/27/de_604825.asp 240# http://www.lanacion.com.ar/04/05/28/de_605203.asp 241# 242# The following eight (8) provinces pulled clocks back to UTC-04:00 at 243# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 244# Apparently, all nine provinces would go back to UTC-03:00 at the same 245# time in October 17th. 246# 247# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 248# Tierra del Fuego, Tucuman. 249# 250# From Mariano Absatz (2004-06-14): 251# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 252# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 253# annoyance with the change is much higher than the power savings obtained.... 254# 255# From Gwillim Law (2004-06-14): 256# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 257# "The time change in Tierra del Fuego was a conflicted decision from 258# the start. The government had decreed that the measure would take 259# effect on June 1, but a normative error forced the new time to begin 260# three days earlier, from a Saturday to a Sunday.... 261# Our understanding was that the change was originally scheduled to take place 262# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 263# provinces). Sunday was May 30, only two days earlier. So the article 264# contains a contradiction. I would give more credence to the Saturday/Sunday 265# date than the "three days earlier" phrase, and conclude that Tierra del 266# Fuego set its clocks back at 2004-05-30 00:00. 267# 268# From Steffen Thorsen (2004-10-05): 269# The previous law 7210 which changed the province of Mendoza's time zone 270# back in May have been modified slightly in a new law 7277, which set the 271# new end date to 2004-09-26 (original date was 2004-10-17). 272# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 273# 274# From Mariano Absatz (2004-10-05): 275# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 276# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 277# at midnight between Saturday, July 24th and Sunday, July 25th.... 278# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 279# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 280# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 281 282# From Alex Krivenyshev (2008-01-17): 283# Here are articles that Argentina Province San Luis is planning to end DST 284# as earlier as upcoming Monday January 21, 2008 or February 2008: 285# 286# Provincia argentina retrasa reloj y marca diferencia con resto del pais 287# (Argentine Province delayed clock and mark difference with the rest of the 288# country) 289# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 290# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 291# </a> 292# 293# Es inminente que en San Luis atrasen una hora los relojes 294# (It is imminent in San Luis clocks one hour delay) 295# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 296# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 297# </a> 298# 299# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 300# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 301# </a> 302 303# From Jesper Norgaard Welen (2008-01-18): 304# The page of the San Luis provincial government 305# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 306# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 307# </a> 308# confirms what Alex Krivenyshev has earlier sent to the tz 309# emailing list about that San Luis plans to return to standard 310# time much earlier than the rest of the country. It also 311# confirms that upon request the provinces San Juan and Mendoza 312# refused to follow San Luis in this change. 313# 314# The change is supposed to take place Monday the 21.st at 0:00 315# hours. As far as I understand it if this goes ahead, we need 316# a new timezone for San Luis (although there are also documented 317# independent changes in the southamerica file of San Luis in 318# 1990 and 1991 which has not been confirmed). 319 320# From Jesper Norgaard Welen (2008-01-25): 321# Unfortunately the below page has become defunct, about the San Luis 322# time change. Perhaps because it now is part of a group of pages "Most 323# important pages of 2008." 324# 325# You can use 326# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 327# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 328# </a> 329# instead it seems. Or use "Buscador" from the main page of the San Luis 330# government, and fill in "huso" and click OK, and you will get 3 pages 331# from which the first one is identical to the above. 332 333# From Mariano Absatz (2008-01-28): 334# I can confirm that the Province of San Luis (and so far only that 335# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 336# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 337# 1 hour), and they intend to keep UTC-3 as their timezone all year round 338# (that is, unless they change their mind any minute now). 339# 340# So we'll have to add yet another city to 'southamerica' (I think San 341# Luis city is the mos populated city in the Province, so it'd be 342# America/Argentina/San_Luis... of course I can't remember if San Luis's 343# history of particular changes goes along with Mendoza or San Juan :-( 344# (I only remember not being able to collect hard facts about San Luis 345# back in 2004, when these provinces changed to UTC-4 for a few days, I 346# mailed them personally and never got an answer). 347 348# From Paul Eggert (2008-06-30): 349# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 350# from the IATA otherwise. As noted below, Shanks & Pottenger say that 351# America/Cordoba split into 6 subregions during 1991/1992, one of which 352# was America/San_Luis, but we haven't verified this yet so for now we'll 353# keep America/Cordoba a single region rather than splitting it into the 354# other 5 subregions. 355 356# From Mariano Absatz (2009-03-13): 357# Yesterday (with our usual 2-day notice) the Province of San Luis 358# decided that next Sunday instead of "staying" @utc-03:00 they will go 359# to utc-04:00 until the second Saturday in October... 360# 361# The press release is at 362# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 363# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 364# </a> 365# (I couldn't find the decree, but 366# <a href="http://www.sanluis.gov.ar"> 367# www.sanluis.gov.ar 368# <a/> 369# is the official page for the Province Government). 370# 371# There's also a note in only one of the major national papers (La Naci�n) at 372# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 373# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 374# </a> 375# 376# The press release says: 377# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 378# atrasar una hora sus relojes. 379# 380# A partir de entonces, San Luis establecer� el huso horario propio de 381# la Provincia. De esta manera, durante el periodo del calendario anual 382# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 383# domingo de marzo y las 24:00 del segundo s�bado de octubre. 384# Quick&dirty translation 385# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 386# inhabitants) will have to turn back one hour their clocks 387# 388# Since then, San Luis will establish its own Province timezone. Thus, 389# during 2009, this timezone change will run from 00:00 the third Sunday 390# in March until 24:00 of the second Saturday in October. 391 392# From Arthur David Olson (2009-03-16): 393# The unofficial claim at 394# <a href="http://www.timeanddate.com/news/time/san-luis-new-time-zone.html"> 395# http://www.timeanddate.com/news/time/san-luis-new-time-zone.html 396# </a> 397# is that "The province will most likely follow the next daylight saving schedule, 398# which is planned for the second Sunday in October." 399 400# 401# Zone NAME GMTOFF RULES FORMAT [UNTIL] 402# 403# Buenos Aires (BA), Capital Federal (CF), 404Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 405 -4:16:48 - CMT 1920 May # Cordoba Mean Time 406 -4:00 - ART 1930 Dec 407 -4:00 Arg AR%sT 1969 Oct 5 408 -3:00 Arg AR%sT 1999 Oct 3 409 -4:00 Arg AR%sT 2000 Mar 3 410 -3:00 Arg AR%sT 411# 412# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 413# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 414# 415# Shanks & Pottenger also make the following claims, which we haven't verified: 416# - Formosa switched to -3:00 on 1991-01-07. 417# - Misiones switched to -3:00 on 1990-12-29. 418# - Chaco switched to -3:00 on 1991-01-04. 419# - Santiago del Estero switched to -4:00 on 1991-04-01, 420# then to -3:00 on 1991-04-26. 421# 422Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 423 -4:16:48 - CMT 1920 May 424 -4:00 - ART 1930 Dec 425 -4:00 Arg AR%sT 1969 Oct 5 426 -3:00 Arg AR%sT 1991 Mar 3 427 -4:00 - WART 1991 Oct 20 428 -3:00 Arg AR%sT 1999 Oct 3 429 -4:00 Arg AR%sT 2000 Mar 3 430 -3:00 Arg AR%sT 431# 432# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 433Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 434 -4:16:48 - CMT 1920 May 435 -4:00 - ART 1930 Dec 436 -4:00 Arg AR%sT 1969 Oct 5 437 -3:00 Arg AR%sT 1991 Mar 3 438 -4:00 - WART 1991 Oct 20 439 -3:00 Arg AR%sT 1999 Oct 3 440 -4:00 Arg AR%sT 2000 Mar 3 441 -3:00 Arg AR%sT 2008 Oct 18 442 -3:00 - ART 443# 444# Tucuman (TM) 445Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 446 -4:16:48 - CMT 1920 May 447 -4:00 - ART 1930 Dec 448 -4:00 Arg AR%sT 1969 Oct 5 449 -3:00 Arg AR%sT 1991 Mar 3 450 -4:00 - WART 1991 Oct 20 451 -3:00 Arg AR%sT 1999 Oct 3 452 -4:00 Arg AR%sT 2000 Mar 3 453 -3:00 - ART 2004 Jun 1 454 -4:00 - WART 2004 Jun 13 455 -3:00 Arg AR%sT 456# 457# La Rioja (LR) 458Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 459 -4:16:48 - CMT 1920 May 460 -4:00 - ART 1930 Dec 461 -4:00 Arg AR%sT 1969 Oct 5 462 -3:00 Arg AR%sT 1991 Mar 1 463 -4:00 - WART 1991 May 7 464 -3:00 Arg AR%sT 1999 Oct 3 465 -4:00 Arg AR%sT 2000 Mar 3 466 -3:00 - ART 2004 Jun 1 467 -4:00 - WART 2004 Jun 20 468 -3:00 Arg AR%sT 2008 Oct 18 469 -3:00 - ART 470# 471# San Juan (SJ) 472Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 473 -4:16:48 - CMT 1920 May 474 -4:00 - ART 1930 Dec 475 -4:00 Arg AR%sT 1969 Oct 5 476 -3:00 Arg AR%sT 1991 Mar 1 477 -4:00 - WART 1991 May 7 478 -3:00 Arg AR%sT 1999 Oct 3 479 -4:00 Arg AR%sT 2000 Mar 3 480 -3:00 - ART 2004 May 31 481 -4:00 - WART 2004 Jul 25 482 -3:00 Arg AR%sT 2008 Oct 18 483 -3:00 - ART 484# 485# Jujuy (JY) 486Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 487 -4:16:48 - CMT 1920 May 488 -4:00 - ART 1930 Dec 489 -4:00 Arg AR%sT 1969 Oct 5 490 -3:00 Arg AR%sT 1990 Mar 4 491 -4:00 - WART 1990 Oct 28 492 -4:00 1:00 WARST 1991 Mar 17 493 -4:00 - WART 1991 Oct 6 494 -3:00 1:00 ARST 1992 495 -3:00 Arg AR%sT 1999 Oct 3 496 -4:00 Arg AR%sT 2000 Mar 3 497 -3:00 Arg AR%sT 2008 Oct 18 498 -3:00 - ART 499# 500# Catamarca (CT), Chubut (CH) 501Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 502 -4:16:48 - CMT 1920 May 503 -4:00 - ART 1930 Dec 504 -4:00 Arg AR%sT 1969 Oct 5 505 -3:00 Arg AR%sT 1991 Mar 3 506 -4:00 - WART 1991 Oct 20 507 -3:00 Arg AR%sT 1999 Oct 3 508 -4:00 Arg AR%sT 2000 Mar 3 509 -3:00 - ART 2004 Jun 1 510 -4:00 - WART 2004 Jun 20 511 -3:00 Arg AR%sT 2008 Oct 18 512 -3:00 - ART 513# 514# Mendoza (MZ) 515Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 516 -4:16:48 - CMT 1920 May 517 -4:00 - ART 1930 Dec 518 -4:00 Arg AR%sT 1969 Oct 5 519 -3:00 Arg AR%sT 1990 Mar 4 520 -4:00 - WART 1990 Oct 15 521 -4:00 1:00 WARST 1991 Mar 1 522 -4:00 - WART 1991 Oct 15 523 -4:00 1:00 WARST 1992 Mar 1 524 -4:00 - WART 1992 Oct 18 525 -3:00 Arg AR%sT 1999 Oct 3 526 -4:00 Arg AR%sT 2000 Mar 3 527 -3:00 - ART 2004 May 23 528 -4:00 - WART 2004 Sep 26 529 -3:00 Arg AR%sT 2008 Oct 18 530 -3:00 - ART 531# 532# San Luis (SL) 533Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 534 -4:16:48 - CMT 1920 May 535 -4:00 - ART 1930 Dec 536 -4:00 Arg AR%sT 1969 Oct 5 537 -3:00 Arg AR%sT 1990 538 -3:00 1:00 ARST 1990 Mar 14 539 -4:00 - WART 1990 Oct 15 540 -4:00 1:00 WARST 1991 Mar 1 541 -4:00 - WART 1991 Jun 1 542 -3:00 - ART 1999 Oct 3 543 -4:00 1:00 WARST 2000 Mar 3 544 -3:00 - ART 2004 May 31 545 -4:00 - WART 2004 Jul 25 546 -3:00 Arg AR%sT 2008 Jan 21 547 -3:00 - ART 2009 Mar 15 548 -4:00 Arg WAR%sT 549# 550# Santa Cruz (SC) 551Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 552 -4:16:48 - CMT 1920 May # Cordoba Mean Time 553 -4:00 - ART 1930 Dec 554 -4:00 Arg AR%sT 1969 Oct 5 555 -3:00 Arg AR%sT 1999 Oct 3 556 -4:00 Arg AR%sT 2000 Mar 3 557 -3:00 - ART 2004 Jun 1 558 -4:00 - WART 2004 Jun 20 559 -3:00 Arg AR%sT 2008 Oct 18 560 -3:00 - ART 561# 562# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 563Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 564 -4:16:48 - CMT 1920 May # Cordoba Mean Time 565 -4:00 - ART 1930 Dec 566 -4:00 Arg AR%sT 1969 Oct 5 567 -3:00 Arg AR%sT 1999 Oct 3 568 -4:00 Arg AR%sT 2000 Mar 3 569 -3:00 - ART 2004 May 30 570 -4:00 - WART 2004 Jun 20 571 -3:00 Arg AR%sT 2008 Oct 18 572 -3:00 - ART 573 574# Aruba 575# Zone NAME GMTOFF RULES FORMAT [UNTIL] 576Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 577 -4:30 - ANT 1965 # Netherlands Antilles Time 578 -4:00 - AST 579 580# Bolivia 581# Zone NAME GMTOFF RULES FORMAT [UNTIL] 582Zone America/La_Paz -4:32:36 - LMT 1890 583 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 584 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 585 -4:00 - BOT # Bolivia Time 586 587# Brazil 588 589# From Paul Eggert (1993-11-18): 590# The mayor of Rio recently attempted to change the time zone rules 591# just in his city, in order to leave more summer time for the tourist trade. 592# The rule change lasted only part of the day; 593# the federal government refused to follow the city's rules, and business 594# was in a chaos, so the mayor backed down that afternoon. 595 596# From IATA SSIM (1996-02): 597# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 598# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 599# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 600# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 601# [The last three states are new to this issue of the IATA SSIM.] 602 603# From Gwillim Law (1996-10-07): 604# Geography, history (Tocantins was part of Goias until 1989), and other 605# sources of time zone information lead me to believe that AL, SE, and TO were 606# always in BR1, and so the only change was whether or not they observed DST.... 607# The earliest issue of the SSIM I have is 2/91. Each issue from then until 608# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 609# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 610# (UTC-4).... The other two time zones given for Brazil are BR3, which is 611# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 612# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 613# become part of the state of Pernambuco). The boundary between BR1 and BR2 614# has never been clearly stated. They've simply been called East and West. 615# However, some conclusions can be drawn from another IATA manual: the Airline 616# Coding Directory, which lists close to 400 airports in Brazil. For each 617# airport it gives a time zone which is coded to the SSIM. From that 618# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 619# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 620# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 621 622# From Marcos Tadeu (1998-09-27): 623# <a href="http://pcdsh01.on.br/verao1.html"> 624# Brazilian official page 625# </a> 626 627# From Jesper Norgaard (2000-11-03): 628# [For an official list of which regions in Brazil use which time zones, see:] 629# http://pcdsh01.on.br/Fusbr.htm 630# http://pcdsh01.on.br/Fusbrhv.htm 631 632# From Celso Doria via David Madeo (2002-10-09): 633# The reason for the delay this year has to do with elections in Brazil. 634# 635# Unlike in the United States, elections in Brazil are 100% computerized and 636# the results are known almost immediately. Yesterday, it was the first 637# round of the elections when 115 million Brazilians voted for President, 638# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 639# counting (or re-counting) votes anymore and we know there will be a second 640# round for the Presidency and also for some Governors. The 2nd round will 641# take place on October 27th. 642# 643# The reason why the DST will only begin November 3rd is that the thousands 644# of electoral machines used cannot have their time changed, and since the 645# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 646# the Government decided to postpone DST, instead of changing the Constitution 647# (maybe, for the next elections, it will be possible to change the clock)... 648 649# From Rodrigo Severo (2004-10-04): 650# It's just the biannual change made necessary by the much hyped, supposedly 651# modern Brazilian eletronic voting machines which, apparently, can't deal 652# with a time change between the first and the second rounds of the elections. 653 654# From Steffen Thorsen (2007-09-20): 655# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 656# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 657 658# From Paul Schulze (2008-06-24): 659# ...by law number 11.662 of April 24, 2008 (published in the "Diario 660# Oficial da Uniao"...) in Brazil there are changes in the timezones, 661# effective today (00:00am at June 24, 2008) as follows: 662# 663# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 664# part of the Amazonas state that had this timezone now being put to the 665# timezone UTC+4 666# b) The whole Para state now is put at timezone UTC+3, instead of just 667# part of it, as was before. 668# 669# This change follows a proposal of senator Tiao Viana of Acre state, that 670# proposed it due to concerns about open television channels displaying 671# programs inappropriate to youths in the states that had the timezone 672# UTC+5 too early in the night. In the occasion, some more corrections 673# were proposed, trying to unify the timezones of any given state. This 674# change modifies timezone rules defined in decree 2.784 of 18 June, 675# 1913. 676 677# From Rodrigo Severo (2008-06-24): 678# Just correcting the URL: 679# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 680# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 681# </a> 682# 683# As a result of the above Decree I believe the America/Rio_Branco 684# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 685# be created to represent the the west side of the Para State. I 686# suggest this new timezone be called Santarem as the most 687# important/populated city in the affected area. 688# 689# This new timezone would be the same as the Rio_Branco timezone up to 690# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 691 692# From Alex Krivenyshev (2008-06-24): 693# This is a quick reference page for New and Old Brazil Time Zones map. 694# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 695# http://www.worldtimezone.com/brazil-time-new-old.php 696# </a> 697# 698# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 699# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 700# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 701 702# From Paul Eggert (2002-10-10): 703# The official decrees referenced below are mostly taken from 704# <a href="http://pcdsh01.on.br/DecHV.html"> 705# Decretos sobre o Horario de Verao no Brasil 706# </a>. 707 708# From Steffen Thorsen (2008-08-29): 709# As announced by the government and many newspapers in Brazil late 710# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 711# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 712# past years experience with the elections, there was a good chance that 713# the start was postponed to November, but it did not happen this year. 714# 715# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 716# 717# An official page about it: 718# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 719# http://www.mme.gov.br/site/news/detail.do?newsId=16722 720# </a> 721# Note that this link does not always work directly, but must be accessed 722# by going to 723# <a href="http://www.mme.gov.br/first"> 724# http://www.mme.gov.br/first 725# </a> 726# 727# One example link that works directly: 728# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 729# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 730# (Portuguese) 731# </a> 732# 733# We have a written a short article about it as well: 734# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 735# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 736# </a> 737 738# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 739# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 740# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 741Rule Brazil 1931 only - Oct 3 11:00 1:00 S 742Rule Brazil 1932 1933 - Apr 1 0:00 0 - 743Rule Brazil 1932 only - Oct 3 0:00 1:00 S 744# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 745# revoked DST. 746# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 747# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 748Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 749Rule Brazil 1950 only - Apr 16 1:00 0 - 750Rule Brazil 1951 1952 - Apr 1 0:00 0 - 751# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 752Rule Brazil 1953 only - Mar 1 0:00 0 - 753# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 754# revoked DST. 755# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 756# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 757# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 758# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 759# extended the above decree to all of the national territory on 12-09. 760Rule Brazil 1963 only - Dec 9 0:00 1:00 S 761# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 762# extended summer time by one day to 1964-03-01 00:00 (start of school). 763Rule Brazil 1964 only - Mar 1 0:00 0 - 764# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 765Rule Brazil 1965 only - Jan 31 0:00 1:00 S 766Rule Brazil 1965 only - Mar 31 0:00 0 - 767# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 768Rule Brazil 1965 only - Dec 1 0:00 1:00 S 769# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 770Rule Brazil 1966 1968 - Mar 1 0:00 0 - 771Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 772# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 773# revoked DST. 774# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 775Rule Brazil 1985 only - Nov 2 0:00 1:00 S 776# Decree 92,310 (1986-01-21) 777# Decree 92,463 (1986-03-13) 778Rule Brazil 1986 only - Mar 15 0:00 0 - 779# Decree 93,316 (1986-10-01) 780Rule Brazil 1986 only - Oct 25 0:00 1:00 S 781Rule Brazil 1987 only - Feb 14 0:00 0 - 782# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 783Rule Brazil 1987 only - Oct 25 0:00 1:00 S 784Rule Brazil 1988 only - Feb 7 0:00 0 - 785# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 786# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 787Rule Brazil 1988 only - Oct 16 0:00 1:00 S 788Rule Brazil 1989 only - Jan 29 0:00 0 - 789# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 790# with the same exceptions 791Rule Brazil 1989 only - Oct 15 0:00 1:00 S 792Rule Brazil 1990 only - Feb 11 0:00 0 - 793# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 794# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 795# Decree 99,629 (1990-10-19) adds BA, MT. 796Rule Brazil 1990 only - Oct 21 0:00 1:00 S 797Rule Brazil 1991 only - Feb 17 0:00 0 - 798# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 799# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 800Rule Brazil 1991 only - Oct 20 0:00 1:00 S 801Rule Brazil 1992 only - Feb 9 0:00 0 - 802# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 803# adopted by same states. 804Rule Brazil 1992 only - Oct 25 0:00 1:00 S 805Rule Brazil 1993 only - Jan 31 0:00 0 - 806# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 807# adopted by same states, plus AM. 808# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 809# web page corrected 2004-01-07) adopted by same states, minus AM. 810# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 811# adopted by same states, plus MT and TO. 812# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 813# adds AL, SE. 814Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 815Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 816Rule Brazil 1996 only - Feb 11 0:00 0 - 817# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 818# adopted by same states, minus AL, SE. 819Rule Brazil 1996 only - Oct 6 0:00 1:00 S 820Rule Brazil 1997 only - Feb 16 0:00 0 - 821# From Daniel C. Sobral (1998-02-12): 822# In 1997, the DS began on October 6. The stated reason was that 823# because international television networks ignored Brazil's policy on DS, 824# they bought the wrong times on satellite for coverage of Pope's visit. 825# This year, the ending date of DS was postponed to March 1 826# to help dealing with the shortages of electric power. 827# 828# Decree 2,317 (1997-09-04), adopted by same states. 829Rule Brazil 1997 only - Oct 6 0:00 1:00 S 830# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 831# (1998-02-10) 832Rule Brazil 1998 only - Mar 1 0:00 0 - 833# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 834# adopted by the same states as before. 835Rule Brazil 1998 only - Oct 11 0:00 1:00 S 836Rule Brazil 1999 only - Feb 21 0:00 0 - 837# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 838# (1999-08-23) adopted by same states. 839# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 840# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 841Rule Brazil 1999 only - Oct 3 0:00 1:00 S 842Rule Brazil 2000 only - Feb 27 0:00 0 - 843# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 844# adopted by the same states as before. 845# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 846# repeals DST in PE and RR, effective 2000-10-15 00:00. 847# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 848# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 849# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 850# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 851Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 852Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 853# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 854# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 855Rule Brazil 2002 only - Nov 3 0:00 1:00 S 856# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 857# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 858Rule Brazil 2003 only - Oct 19 0:00 1:00 S 859# Decree 5,223 (2004-10-01) reestablishes DST in MT. 860# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 861Rule Brazil 2004 only - Nov 2 0:00 1:00 S 862# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 863# adopted by the same states as before. 864Rule Brazil 2005 only - Oct 16 0:00 1:00 S 865# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 866# adopted by the same states as before. 867Rule Brazil 2006 only - Nov 5 0:00 1:00 S 868Rule Brazil 2007 only - Feb 25 0:00 0 - 869# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 870# adopted by the same states as before. 871Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 872# From Frederico A. C. Neves (2008-09-10): 873# Acording to this decree 874# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 875# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 876# </a> 877# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 878# 3rd Feb Sunday. There is an exception on the return date when this is 879# the Carnival Sunday then the return date will be the next Sunday... 880Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 881Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 882Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 883Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 884Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 885Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 886Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 887Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 888Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 889Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 890Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 891Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 892Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 893# From Arthur David Olson (2008-09-29): 894# The next is wrong in some years but is better than nothing. 895Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 896 897# The latest ruleset listed above says that the following states observe DST: 898# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 899 900# Zone NAME GMTOFF RULES FORMAT [UNTIL] 901# 902# Fernando de Noronha (administratively part of PE) 903Zone America/Noronha -2:09:40 - LMT 1914 904 -2:00 Brazil FN%sT 1990 Sep 17 905 -2:00 - FNT 1999 Sep 30 906 -2:00 Brazil FN%sT 2000 Oct 15 907 -2:00 - FNT 2001 Sep 13 908 -2:00 Brazil FN%sT 2002 Oct 1 909 -2:00 - FNT 910# Other Atlantic islands have no permanent settlement. 911# These include Trindade and Martin Vaz (administratively part of ES), 912# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 913# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 914# it also included the Penedos. 915# 916# Amapa (AP), east Para (PA) 917# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 918# The division between east and west Para is the river Xingu. 919# In the north a very small part from the river Javary (now Jari I guess, 920# the border with Amapa) to the Amazon, then to the Xingu. 921Zone America/Belem -3:13:56 - LMT 1914 922 -3:00 Brazil BR%sT 1988 Sep 12 923 -3:00 - BRT 924# 925# west Para (PA) 926# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 927Zone America/Santarem -3:38:48 - LMT 1914 928 -4:00 Brazil AM%sT 1988 Sep 12 929 -4:00 - AMT 2008 Jun 24 00:00 930 -3:00 - BRT 931# 932# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 933# Paraiba (PB) 934Zone America/Fortaleza -2:34:00 - LMT 1914 935 -3:00 Brazil BR%sT 1990 Sep 17 936 -3:00 - BRT 1999 Sep 30 937 -3:00 Brazil BR%sT 2000 Oct 22 938 -3:00 - BRT 2001 Sep 13 939 -3:00 Brazil BR%sT 2002 Oct 1 940 -3:00 - BRT 941# 942# Pernambuco (PE) (except Atlantic islands) 943Zone America/Recife -2:19:36 - LMT 1914 944 -3:00 Brazil BR%sT 1990 Sep 17 945 -3:00 - BRT 1999 Sep 30 946 -3:00 Brazil BR%sT 2000 Oct 15 947 -3:00 - BRT 2001 Sep 13 948 -3:00 Brazil BR%sT 2002 Oct 1 949 -3:00 - BRT 950# 951# Tocantins (TO) 952Zone America/Araguaina -3:12:48 - LMT 1914 953 -3:00 Brazil BR%sT 1990 Sep 17 954 -3:00 - BRT 1995 Sep 14 955 -3:00 Brazil BR%sT 2003 Sep 24 956 -3:00 - BRT 957# 958# Alagoas (AL), Sergipe (SE) 959Zone America/Maceio -2:22:52 - LMT 1914 960 -3:00 Brazil BR%sT 1990 Sep 17 961 -3:00 - BRT 1995 Oct 13 962 -3:00 Brazil BR%sT 1996 Sep 4 963 -3:00 - BRT 1999 Sep 30 964 -3:00 Brazil BR%sT 2000 Oct 22 965 -3:00 - BRT 2001 Sep 13 966 -3:00 Brazil BR%sT 2002 Oct 1 967 -3:00 - BRT 968# 969# Bahia (BA) 970# There are too many Salvadors elsewhere, so use America/Bahia instead 971# of America/Salvador. 972Zone America/Bahia -2:34:04 - LMT 1914 973 -3:00 Brazil BR%sT 2003 Sep 24 974 -3:00 - BRT 975# 976# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 977# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 978# Santa Catarina (SC), Rio Grande do Sul (RS) 979Zone America/Sao_Paulo -3:06:28 - LMT 1914 980 -3:00 Brazil BR%sT 1963 Oct 23 00:00 981 -3:00 1:00 BRST 1964 982 -3:00 Brazil BR%sT 983# 984# Mato Grosso do Sul (MS) 985Zone America/Campo_Grande -3:38:28 - LMT 1914 986 -4:00 Brazil AM%sT 987# 988# Mato Grosso (MT) 989Zone America/Cuiaba -3:44:20 - LMT 1914 990 -4:00 Brazil AM%sT 2003 Sep 24 991 -4:00 - AMT 2004 Oct 1 992 -4:00 Brazil AM%sT 993# 994# Rondonia (RO) 995Zone America/Porto_Velho -4:15:36 - LMT 1914 996 -4:00 Brazil AM%sT 1988 Sep 12 997 -4:00 - AMT 998# 999# Roraima (RR) 1000Zone America/Boa_Vista -4:02:40 - LMT 1914 1001 -4:00 Brazil AM%sT 1988 Sep 12 1002 -4:00 - AMT 1999 Sep 30 1003 -4:00 Brazil AM%sT 2000 Oct 15 1004 -4:00 - AMT 1005# 1006# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1007# The great circle line from Tabatinga to Porto Acre divides 1008# east from west Amazonas. 1009Zone America/Manaus -4:00:04 - LMT 1914 1010 -4:00 Brazil AM%sT 1988 Sep 12 1011 -4:00 - AMT 1993 Sep 28 1012 -4:00 Brazil AM%sT 1994 Sep 22 1013 -4:00 - AMT 1014# 1015# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1016# Eirunepe, Envira, Ipixuna 1017Zone America/Eirunepe -4:39:28 - LMT 1914 1018 -5:00 Brazil AC%sT 1988 Sep 12 1019 -5:00 - ACT 1993 Sep 28 1020 -5:00 Brazil AC%sT 1994 Sep 22 1021 -5:00 - ACT 2008 Jun 24 00:00 1022 -4:00 - AMT 1023# 1024# Acre (AC) 1025Zone America/Rio_Branco -4:31:12 - LMT 1914 1026 -5:00 Brazil AC%sT 1988 Sep 12 1027 -5:00 - ACT 2008 Jun 24 00:00 1028 -4:00 - AMT 1029 1030# Chile 1031 1032# From Eduardo Krell (1995-10-19): 1033# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1034# of October.... The law is the same for March and October. 1035# (1998-09-29): 1036# Because of the drought this year, the government decided to go into 1037# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1038# (unless there's another dry season next year, I guess). 1039 1040# From Julio I. Pacheco Troncoso (1999-03-18): 1041# Because of the same drought, the government decided to end DST later, 1042# on April 3, (one-time change). 1043 1044# From Oscar van Vlijmen (2006-10-08): 1045# http://www.horaoficial.cl/cambio.htm 1046 1047# From Jesper Norgaard Welen (2006-10-08): 1048# I think that there are some obvious mistakes in the suggested link 1049# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1050# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1051# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1052# anyhow it clears up some doubts too. 1053 1054# From Paul Eggert (2006-12-27): 1055# The following data for Chile and America/Santiago are from 1056# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1057# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1058# & Pottenger, except with DST transitions after 1932 cloned from 1059# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1060# but we have no other source. 1061 1062# From German Poo-Caaman~o (2008-03-03): 1063# Due to drought, Chile extends Daylight Time in three weeks. This 1064# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1065# and Saturday 3/29 at 22:00 for Pacific/Easter) 1066# The Supreme Decree is located at 1067# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1068# http://www.shoa.cl/servicios/supremo316.pdf 1069# </a> 1070# and the instructions for 2008 are located in: 1071# <a href="http://www.horaoficial.cl/cambio.htm"> 1072# http://www.horaoficial.cl/cambio.htm 1073# </a>. 1074 1075# From Jose Miguel Garrido (2008-03-05): 1076# ... 1077# You could see the announces of the change on 1078# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1079# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1080# </a>. 1081 1082# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1083Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1084Rule Chile 1928 1932 - Apr 1 0:00 0 - 1085Rule Chile 1942 only - Jun 1 4:00u 0 - 1086Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1087Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1088Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1089Rule Chile 1947 only - Apr 1 4:00u 0 - 1090Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1091Rule Chile 1969 only - Mar 30 3:00u 0 - 1092Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1093Rule Chile 1970 only - Mar 29 3:00u 0 - 1094Rule Chile 1971 only - Mar 14 3:00u 0 - 1095Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1096Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1097Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1098Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1099Rule Chile 1987 only - Apr 12 3:00u 0 - 1100Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1101Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1102Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1103Rule Chile 1990 only - Mar 18 3:00u 0 - 1104Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1105Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1106Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1107Rule Chile 1997 only - Mar 30 3:00u 0 - 1108Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1109Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1110Rule Chile 1999 only - Apr 4 3:00u 0 - 1111Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1112Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1113# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1114# which is used below in specifying the transition. 1115Rule Chile 2008 only - Mar 30 3:00u 0 - 1116Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1117# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1118# (1996-09) says 1998-03-08. Ignore these. 1119# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1120Zone America/Santiago -4:42:46 - LMT 1890 1121 -4:42:46 - SMT 1910 # Santiago Mean Time 1122 -5:00 - CLT 1916 Jul 1 # Chile Time 1123 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1124 -4:00 - CLT 1919 Jul 1 # Chile Time 1125 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1126 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1127 -4:00 Chile CL%sT 1128Zone Pacific/Easter -7:17:44 - LMT 1890 1129 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1130 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1131 -6:00 Chile EAS%sT 1132# 1133# Sala y Gomez Island is like Pacific/Easter. 1134# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1135# San Felix, and Antarctic bases, are like America/Santiago. 1136 1137# Colombia 1138# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1139Rule CO 1992 only - May 3 0:00 1:00 S 1140Rule CO 1993 only - Apr 4 0:00 0 - 1141# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1142Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1143 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1144 -5:00 CO CO%sT # Colombia Time 1145# Malpelo, Providencia, San Andres 1146# no information; probably like America/Bogota 1147 1148# Curacao 1149# 1150# From Paul Eggert (2006-03-22): 1151# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1152# -4:00 since standard time was introduced on 1912-03-02; and that 1153# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1154# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1155# Saba Island has been like Curacao. 1156# This all predates our 1970 cutoff, though. 1157# 1158# By July 2007 Curacao and St Maarten are planned to become 1159# associated states within the Netherlands, much like Aruba; 1160# Bonaire, Saba and St Eustatius would become directly part of the 1161# Netherlands as Kingdom Islands. This won't affect their time zones 1162# though, as far as we know. 1163# 1164# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1165Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1166 -4:30 - ANT 1965 # Netherlands Antilles Time 1167 -4:00 - AST 1168 1169# Ecuador 1170# 1171# From Paul Eggert (2007-03-04): 1172# Apparently Ecuador had a failed experiment with DST in 1992. 1173# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1174# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1175# talk about "hora Sixto". Leave this alone for now, as we have no data. 1176# 1177# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1178Zone America/Guayaquil -5:19:20 - LMT 1890 1179 -5:14:00 - QMT 1931 # Quito Mean Time 1180 -5:00 - ECT # Ecuador Time 1181Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1182 -5:00 - ECT 1986 1183 -6:00 - GALT # Galapagos Time 1184 1185# Falklands 1186 1187# From Paul Eggert (2006-03-22): 1188# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1189# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1190 1191# From Falkland Islands Government Office, London (2001-01-22) 1192# via Jesper Norgaard: 1193# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1194# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1195# September. It is anticipated that the clocks will revert back at 2 1196# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1197# Sunday 1 September. 1198 1199# From Rives McDow (2001-02-13): 1200# 1201# I have communicated several times with people there, and the last 1202# time I had communications that was helpful was in 1998. Here is 1203# what was said then: 1204# 1205# "The general rule was that Stanley used daylight saving and the Camp 1206# did not. However for various reasons many people in the Camp have 1207# started to use daylight saving (known locally as 'Stanley Time') 1208# There is no rule as to who uses daylight saving - it is a matter of 1209# personal choice and so it is impossible to draw a map showing who 1210# uses it and who does not. Any list would be out of date as soon as 1211# it was produced. This year daylight saving ended on April 18/19th 1212# and started again on September 12/13th. I do not know what the rule 1213# is, but can find out if you like. We do not change at the same time 1214# as UK or Chile." 1215# 1216# I did have in my notes that the rule was "Second Saturday in Sep at 1217# 0:00 until third Saturday in Apr at 0:00". I think that this does 1218# not agree in some cases with Shanks; is this true? 1219# 1220# Also, there is no mention in the list that some areas in the 1221# Falklands do not use DST. I have found in my communications there 1222# that these areas are on the western half of East Falkland and all of 1223# West Falkland. Stanley is the only place that consistently observes 1224# DST. Again, as in other places in the world, the farmers don't like 1225# it. West Falkland is almost entirely sheep farmers. 1226# 1227# I know one lady there that keeps a list of which farm keeps DST and 1228# which doesn't each year. She runs a shop in Stanley, and says that 1229# the list changes each year. She uses it to communicate to her 1230# customers, catching them when they are home for lunch or dinner. 1231 1232# From Paul Eggert (2001-03-05): 1233# For now, we'll just record the time in Stanley, since we have no 1234# better info. 1235 1236# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1237Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1238Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1239Rule Falk 1939 only - Oct 1 0:00 1:00 S 1240Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1241Rule Falk 1943 only - Jan 1 0:00 0 - 1242Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1243Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1244Rule Falk 1984 only - Sep 16 0:00 1:00 S 1245Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1246Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1247Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1248Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1249# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1250Zone Atlantic/Stanley -3:51:24 - LMT 1890 1251 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1252 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1253 -3:00 Falk FK%sT 1985 Sep 15 1254 -4:00 Falk FK%sT 1255 1256# French Guiana 1257# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1258Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1259 -4:00 - GFT 1967 Oct # French Guiana Time 1260 -3:00 - GFT 1261 1262# Guyana 1263# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1264Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1265 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1266 -3:45 - GYT 1975 Jul 31 # Guyana Time 1267 -3:00 - GYT 1991 1268# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1269 -4:00 - GYT 1270 1271# Paraguay 1272# From Paul Eggert (2006-03-22): 1273# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1274# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1275# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1276# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1277Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1278Rule Para 1975 1978 - Mar 1 0:00 0 - 1279Rule Para 1979 1991 - Apr 1 0:00 0 - 1280Rule Para 1989 only - Oct 22 0:00 1:00 S 1281Rule Para 1990 only - Oct 1 0:00 1:00 S 1282Rule Para 1991 only - Oct 6 0:00 1:00 S 1283Rule Para 1992 only - Mar 1 0:00 0 - 1284Rule Para 1992 only - Oct 5 0:00 1:00 S 1285Rule Para 1993 only - Mar 31 0:00 0 - 1286Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1287Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1288Rule Para 1996 only - Mar 1 0:00 0 - 1289# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1290# From Steffen Thorsen (2000-10-02): 1291# I have three independent reports that Paraguay changed to DST this Sunday 1292# (10-01). 1293# 1294# Translated by Gwillim Law (2001-02-27) from 1295# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1296# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1297# </a>: 1298# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1299# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1300# system has been operating for several years. Formerly there was a separate 1301# decree each year; the new law has the same effect, but permanently. Every 1302# year, the time will change on the first Sunday of October; likewise, the 1303# clock will be set back on the first Sunday of March. 1304# 1305Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1306# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1307Rule Para 1997 only - Feb lastSun 0:00 0 - 1308# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1309# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1310Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1311# From Rives McDow (2002-02-28): 1312# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1313# dst method to be from the first Sunday in September to the first Sunday in 1314# April. 1315Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1316Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1317# 1318# From Jesper Norgaard Welen (2005-01-02): 1319# There are several sources that claim that Paraguay made 1320# a timezone rule change in autumn 2004. 1321# From Steffen Thorsen (2005-01-05): 1322# Decree 1,867 (2004-03-05) 1323# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1324# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1325Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1326Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1327 1328# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1329Zone America/Asuncion -3:50:40 - LMT 1890 1330 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1331 -4:00 - PYT 1972 Oct # Paraguay Time 1332 -3:00 - PYT 1974 Apr 1333 -4:00 Para PY%sT 1334 1335# Peru 1336# 1337# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1338# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1339# When we were in Peru in 1985-1986, they apparently switched over 1340# sometime between December 29 and January 3 while we were on the Amazon. 1341# 1342# From Paul Eggert (2006-03-22): 1343# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1344 1345# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1346Rule Peru 1938 only - Jan 1 0:00 1:00 S 1347Rule Peru 1938 only - Apr 1 0:00 0 - 1348Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1349Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1350Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1351Rule Peru 1986 1987 - Apr 1 0:00 0 - 1352Rule Peru 1990 only - Jan 1 0:00 1:00 S 1353Rule Peru 1990 only - Apr 1 0:00 0 - 1354# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1355Rule Peru 1994 only - Jan 1 0:00 1:00 S 1356Rule Peru 1994 only - Apr 1 0:00 0 - 1357# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1358Zone America/Lima -5:08:12 - LMT 1890 1359 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1360 -5:00 Peru PE%sT # Peru Time 1361 1362# South Georgia 1363# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1364Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1365 -2:00 - GST # South Georgia Time 1366 1367# South Sandwich Is 1368# uninhabited; scientific personnel have wintered 1369 1370# Suriname 1371# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1372Zone America/Paramaribo -3:40:40 - LMT 1911 1373 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1374 -3:40:36 - PMT 1945 Oct # The capital moved? 1375 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1376 -3:30 - SRT 1984 Oct # Suriname Time 1377 -3:00 - SRT 1378 1379# Trinidad and Tobago 1380# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1381Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1382 -4:00 - AST 1383 1384# Uruguay 1385# From Paul Eggert (1993-11-18): 1386# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1387# From Shanks & Pottenger: 1388# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1389# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1390Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1391Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1392Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1393Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1394# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1395Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1396Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1397Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1398# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1399Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1400# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1401# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1402Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1403Rule Uruguay 1942 only - Jan 1 0:00 0 - 1404Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1405Rule Uruguay 1943 only - Mar 14 0:00 0 - 1406Rule Uruguay 1959 only - May 24 0:00 1:00 S 1407Rule Uruguay 1959 only - Nov 15 0:00 0 - 1408Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1409Rule Uruguay 1960 only - Mar 6 0:00 0 - 1410Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1411Rule Uruguay 1965 only - Sep 26 0:00 0 - 1412Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1413Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1414Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1415Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1416Rule Uruguay 1972 only - Aug 15 0:00 0 - 1417Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1418Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1419Rule Uruguay 1976 only - Oct 1 0:00 0 - 1420Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1421Rule Uruguay 1978 only - Apr 1 0:00 0 - 1422Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1423Rule Uruguay 1980 only - May 1 0:00 0 - 1424Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1425Rule Uruguay 1988 only - Mar 14 0:00 0 - 1426Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1427Rule Uruguay 1989 only - Mar 12 0:00 0 - 1428Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1429# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1430# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1431Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1432Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1433Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1434Rule Uruguay 1993 only - Feb 28 0:00 0 - 1435# From Eduardo Cota (2004-09-20): 1436# The uruguayan government has decreed a change in the local time.... 1437# http://www.presidencia.gub.uy/decretos/2004091502.htm 1438Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1439# From Steffen Thorsen (2005-03-11): 1440# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1441# save energy ... it was postponed two weeks.... 1442# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1443Rule Uruguay 2005 only - Mar 27 2:00 0 - 1444# From Eduardo Cota (2005-09-27): 1445# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1446# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1447# 02:00 local time, official time in Uruguay will be at GMT -2. 1448Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1449Rule Uruguay 2006 only - Mar 12 2:00 0 - 1450# From Jesper Norgaard Welen (2006-09-06): 1451# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1452Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1453Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1454# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1455Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1456 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1457 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1458 -3:00 Uruguay UY%sT 1459 1460# Venezuela 1461# 1462# From John Stainforth (2007-11-28): 1463# ... the change for Venezuela originally expected for 2007-12-31 has 1464# been brought forward to 2007-12-09. The official announcement was 1465# published today in the "Gaceta Oficial de la Republica Bolivariana 1466# de Venezuela, numero 38.819" (official document for all laws or 1467# resolution publication) 1468# http://www.globovision.com/news.php?nid=72208 1469 1470# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1471Zone America/Caracas -4:27:44 - LMT 1890 1472 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1473 -4:30 - VET 1965 # Venezuela Time 1474 -4:00 - VET 2007 Dec 9 03:00 1475 -4:30 - VET 1476
