1# This file is in the public domain, so clarified as of 2# 2009-05-17 by Arthur David Olson. 3 4# This file is by no means authoritative; if you think you know better, 5# go ahead and edit the file (and please send any changes to 6# tz@iana.org for general use in the future). For more, please see 7# the file CONTRIBUTING in the tz distribution. 8 9# From Paul Eggert (2014-10-31): 10# 11# Unless otherwise specified, the source for data through 1990 is: 12# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13# San Diego: ACS Publications, Inc. (2003). 14# Unfortunately this book contains many errors and cites no sources. 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. Except where otherwise noted, 21# IATA SSIM is the source for entries after 1990. 22# 23# For data circa 1899, a common source is: 24# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 25# http://www.jstor.org/stable/1774359 26# 27# Earlier editions of these tables used the North American style (e.g. ARST and 28# ARDT for Argentine Standard and Daylight Time), but the following quote 29# suggests that it's better to use European style (e.g. ART and ARST). 30# I suggest the use of _Summer time_ instead of the more cumbersome 31# _daylight-saving time_. _Summer time_ seems to be in general use 32# in Europe and South America. 33# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 34# H L Mencken, _The American Language: Supplement I_ (1960), p 466 35# 36# Earlier editions of these tables also used the North American style 37# for time zones in Brazil, but this was incorrect, as Brazilians say 38# "summer time". Reinaldo Goulart, a São Paulo businessman active in 39# the railroad sector, writes (1999-07-06): 40# The subject of time zones is currently a matter of discussion/debate in 41# Brazil. Let's say that "the Brasília time" is considered the 42# "official time" because Brasília is the capital city. 43# The other three time zones are called "Brasília time "minus one" or 44# "plus one" or "plus two". As far as I know there is no such 45# name/designation as "Eastern Time" or "Central Time". 46# So I invented the following (English-language) abbreviations for now. 47# Corrections are welcome! 48# std dst 49# -2:00 FNT FNST Fernando de Noronha 50# -3:00 BRT BRST Brasília 51# -4:00 AMT AMST Amazon 52# -5:00 ACT ACST Acre 53 54############################################################################### 55 56############################################################################### 57 58# Argentina 59 60# From Bob Devine (1988-01-28): 61# Argentina: first Sunday in October to first Sunday in April since 1976. 62# Double Summer time from 1969 to 1974. Switches at midnight. 63 64# From U. S. Naval Observatory (1988-01-19): 65# ARGENTINA 3 H BEHIND UTC 66 67# From Hernan G. Otero (1995-06-26): 68# I am sending modifications to the Argentine time zone table... 69# AR was chosen because they are the ISO letters that represent Argentina. 70 71# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 72Rule Arg 1930 only - Dec 1 0:00 1:00 S 73Rule Arg 1931 only - Apr 1 0:00 0 - 74Rule Arg 1931 only - Oct 15 0:00 1:00 S 75Rule Arg 1932 1940 - Mar 1 0:00 0 - 76Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 77Rule Arg 1940 only - Jul 1 0:00 1:00 S 78Rule Arg 1941 only - Jun 15 0:00 0 - 79Rule Arg 1941 only - Oct 15 0:00 1:00 S 80Rule Arg 1943 only - Aug 1 0:00 0 - 81Rule Arg 1943 only - Oct 15 0:00 1:00 S 82Rule Arg 1946 only - Mar 1 0:00 0 - 83Rule Arg 1946 only - Oct 1 0:00 1:00 S 84Rule Arg 1963 only - Oct 1 0:00 0 - 85Rule Arg 1963 only - Dec 15 0:00 1:00 S 86Rule Arg 1964 1966 - Mar 1 0:00 0 - 87Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 88Rule Arg 1967 only - Apr 2 0:00 0 - 89Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 90Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 91Rule Arg 1974 only - Jan 23 0:00 1:00 S 92Rule Arg 1974 only - May 1 0:00 0 - 93Rule Arg 1988 only - Dec 1 0:00 1:00 S 94# 95# From Hernan G. Otero (1995-06-26): 96# These corrections were contributed by InterSoft Argentina S.A., 97# obtaining the data from the: 98# Talleres de Hidrografía Naval Argentina 99# (Argentine Naval Hydrography Institute) 100Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 101Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 102# 103# From Hernan G. Otero (1995-06-26): 104# From this moment on, the law that mandated the daylight saving 105# time corrections was derogated and no more modifications 106# to the time zones (for daylight saving) are now made. 107# 108# From Rives McDow (2000-01-10): 109# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 110# which did not result in the switch of a time zone, as they stayed 9 hours 111# from the International Date Line. 112Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 113# From Paul Eggert (2007-12-28): 114# DST was set to expire on March 5, not March 3, but since it was converted 115# to standard time on March 3 it's more convenient for us to pretend that 116# it ended on March 3. 117Rule Arg 2000 only - Mar 3 0:00 0 - 118# 119# From Peter Gradelski via Steffen Thorsen (2000-03-01): 120# We just checked with our São Paulo office and they say the government of 121# Argentina decided not to become one of the countries that go on or off DST. 122# So Buenos Aires should be -3 hours from GMT at all times. 123# 124# From Fabián L. Arce Jofré (2000-04-04): 125# The law that claimed DST for Argentina was derogated by President Fernando 126# de la Rúa on March 2, 2000, because it would make people spend more energy 127# in the winter time, rather than less. The change took effect on March 3. 128# 129# From Mariano Absatz (2001-06-06): 130# one of the major newspapers here in Argentina said that the 1999 131# Timezone Law (which never was effectively applied) will (would?) be 132# in effect.... The article is at 133# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 134# ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted 135# 1999-09-17, and published 1999-09-21. The official publication is at: 136# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 137# Regretfully, you have to subscribe (and pay) for the on-line version.... 138# 139# (2001-06-12): 140# the timezone for Argentina will not change next Sunday. 141# Apparently it will do so on Sunday 24th.... 142# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 143# 144# (2001-06-25): 145# Last Friday (yes, the last working day before the date of the change), the 146# Senate annulled the 1999 law that introduced the changes later postponed. 147# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 148# It remains the vote of the Deputies..., but it will be the same.... 149# This kind of things had always been done this way in Argentina. 150# We are still -03:00 all year round in all of the country. 151# 152# From Steffen Thorsen (2007-12-21): 153# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 154# all of the country (all Zone-entries) are affected. News reports like 155# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 156# that Argentina will use DST next year as well, from October to 157# March, although exact rules are not given. 158# 159# From Jesper Nørgaard Welen (2007-12-26) 160# The last hurdle of Argentina DST is over, the proposal was approved in 161# the lower chamber too (Diputados) with a vote 192 for and 2 against. 162# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 163# the original scanned proposal, where the dates and the zero hours are 164# clear and unambiguous...This is the article about final approval: 165# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 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# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 177 178# From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07) 179# via Rodrigo Severo: 180# Argentinian law No. 25.155 is no longer valid. 181# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 182# The new one is law No. 26.350 183# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 184# So there is no summer time in Argentina for now. 185 186# From Mariano Absatz (2008-10-20): 187# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST 188# in Argentina from 2008-10-19 until 2009-03-15. 189# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 190# 191 192# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 193# 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La 194# Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego 195# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 196# 197# Press release 235 dated Saturday October 18th, from the Government of the 198# Province of Jujuy saying it will not apply DST either (even when it was not 199# included in Decree 1705/2008). 200# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 201 202# From fullinet (2009-10-18): 203# As announced in 204# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 205# (an official .gob.ar) under title: "Sin Cambio de Hora" 206# (English: "No hour change"). 207# 208# "Por el momento, el Gobierno Nacional resolvió no modificar la hora 209# oficial, decisión que estaba en estudio para su implementación el 210# domingo 18 de octubre. Desde el Ministerio de Planificación se anunció 211# que la Argentina hoy, en estas condiciones meteorológicas, no necesita 212# la modificación del huso horario, ya que 2009 nos encuentra con 213# crecimiento en la producción y distribución energética." 214 215Rule Arg 2007 only - Dec 30 0:00 1:00 S 216Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 217Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 218 219# From Mariano Absatz (2004-05-21): 220# Today it was officially published that the Province of Mendoza is changing 221# its timezone this winter... starting tomorrow night.... 222# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 223# From Paul Eggert (2004-05-24): 224# It's Law No. 7,210. This change is due to a public power emergency, so for 225# now we'll assume it's for this year only. 226# 227# From Paul Eggert (2014-08-09): 228# Hora de verano para la República Argentina 229# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html 230# says that standard time in Argentina from 1894-10-31 231# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 232# over Shanks & Pottenger. 233# 234# From Mariano Absatz (2004-06-05): 235# These media articles from a major newspaper mostly cover the current state: 236# http://www.lanacion.com.ar/04/05/27/de_604825.asp 237# http://www.lanacion.com.ar/04/05/28/de_605203.asp 238# 239# The following eight (8) provinces pulled clocks back to UTC-04:00 at 240# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 241# Apparently, all nine provinces would go back to UTC-03:00 at the same 242# time in October 17th. 243# 244# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 245# Tierra del Fuego, Tucumán. 246# 247# From Mariano Absatz (2004-06-14): 248# ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00 249# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 250# annoyance with the change is much higher than the power savings obtained.... 251# 252# From Gwillim Law (2004-06-14): 253# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 254# "The time change in Tierra del Fuego was a conflicted decision from 255# the start. The government had decreed that the measure would take 256# effect on June 1, but a normative error forced the new time to begin 257# three days earlier, from a Saturday to a Sunday.... 258# Our understanding was that the change was originally scheduled to take place 259# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 260# provinces). Sunday was May 30, only two days earlier. So the article 261# contains a contradiction. I would give more credence to the Saturday/Sunday 262# date than the "three days earlier" phrase, and conclude that Tierra del 263# Fuego set its clocks back at 2004-05-30 00:00. 264# 265# From Steffen Thorsen (2004-10-05): 266# The previous law 7210 which changed the province of Mendoza's time zone 267# back in May have been modified slightly in a new law 7277, which set the 268# new end date to 2004-09-26 (original date was 2004-10-17). 269# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 270# 271# From Mariano Absatz (2004-10-05): 272# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 273# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 274# at midnight between Saturday, July 24th and Sunday, July 25th.... 275# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 276# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 277# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 278 279# From Alex Krivenyshev (2008-01-17): 280# Here are articles that Argentina Province San Luis is planning to end DST 281# as earlier as upcoming Monday January 21, 2008 or February 2008: 282# 283# Provincia argentina retrasa reloj y marca diferencia con resto del país 284# (Argentine Province delayed clock and mark difference with the rest of the 285# country) 286# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 287# 288# Es inminente que en San Luis atrasen una hora los relojes 289# (It is imminent in San Luis clocks one hour delay) 290# http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html 291# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 292 293# From Jesper Nørgaard Welen (2008-01-18): 294# The page of the San Luis provincial government 295# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 296# confirms what Alex Krivenyshev has earlier sent to the tz 297# emailing list about that San Luis plans to return to standard 298# time much earlier than the rest of the country. It also 299# confirms that upon request the provinces San Juan and Mendoza 300# refused to follow San Luis in this change. 301# 302# The change is supposed to take place Monday the 21st at 0:00 303# hours. As far as I understand it if this goes ahead, we need 304# a new timezone for San Luis (although there are also documented 305# independent changes in the southamerica file of San Luis in 306# 1990 and 1991 which has not been confirmed). 307 308# From Jesper Nørgaard Welen (2008-01-25): 309# Unfortunately the below page has become defunct, about the San Luis 310# time change. Perhaps because it now is part of a group of pages "Most 311# important pages of 2008." 312# 313# You can use 314# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 315# instead it seems. Or use "Buscador" from the main page of the San Luis 316# government, and fill in "huso" and click OK, and you will get 3 pages 317# from which the first one is identical to the above. 318 319# From Mariano Absatz (2008-01-28): 320# I can confirm that the Province of San Luis (and so far only that 321# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 322# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 323# 1 hour), and they intend to keep UTC-3 as their timezone all year round 324# (that is, unless they change their mind any minute now). 325# 326# So we'll have to add yet another city to 'southamerica' (I think San 327# Luis city is the mos populated city in the Province, so it'd be 328# America/Argentina/San_Luis... of course I can't remember if San Luis's 329# history of particular changes goes along with Mendoza or San Juan :-( 330# (I only remember not being able to collect hard facts about San Luis 331# back in 2004, when these provinces changed to UTC-4 for a few days, I 332# mailed them personally and never got an answer). 333 334# From Paul Eggert (2014-08-12): 335# Unless otherwise specified, data entries are from Shanks & Pottenger through 336# 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that 337# America/Cordoba split into 6 subregions during 1991/1992, one of which 338# was America/San_Luis, but we haven't verified this yet so for now we'll 339# keep America/Cordoba a single region rather than splitting it into the 340# other 5 subregions. 341 342# From Mariano Absatz (2009-03-13): 343# Yesterday (with our usual 2-day notice) the Province of San Luis 344# decided that next Sunday instead of "staying" @utc-03:00 they will go 345# to utc-04:00 until the second Saturday in October... 346# 347# The press release is at 348# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 349# (I couldn't find the decree, but www.sanluis.gov.ar 350# is the official page for the Province Government.) 351# 352# There's also a note in only one of the major national papers ... 353# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 354# 355# The press release says [quick and dirty translation]: 356# ... announced that next Sunday, at 00:00, Puntanos (the San Luis 357# inhabitants) will have to turn back one hour their clocks 358# 359# Since then, San Luis will establish its own Province timezone. Thus, 360# during 2009, this timezone change will run from 00:00 the third Sunday 361# in March until 24:00 of the second Saturday in October. 362 363# From Mariano Absatz (2009-10-16): 364# ...the Province of San Luis is a case in itself. 365# 366# The Law at 367# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 368# is ambiguous because establishes a calendar from the 2nd Sunday in 369# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 370# complement of that starting on the 2nd Sunday of March at 0:00 and 371# ending on the 2nd Saturday of March at 24:00. 372# 373# This clearly breaks every time the 1st of March or October is a Sunday. 374# 375# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 376# Sunday of October and March. 377# 378# The problem is that the changes in the rest of the Provinces that did 379# change in 2007/2008, were made according to the Federal Law and Decrees 380# that did so on the 3rd Sunday of October and March. 381# 382# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 383# (October 11th) at 0:00. 384# 385# So I guess a new set of rules, besides "Arg", must be made and the last 386# America/Argentina/San_Luis entries should change to use these... 387# 388# I'm enclosing a patch that does what I say... regretfully, the San Luis 389# timezone must be called "WART/WARST" even when most of the time (like, 390# right now) WARST == ART... that is, since last Sunday, all the country 391# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 392# of the country calls it "ART". 393# ... 394 395# From Alexander Krivenyshev (2010-04-09): 396# According to news reports from El Diario de la República Province San 397# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 398# after April 11, 2010 - will continue to have same time as rest of 399# Argentina (UTC-3) (no DST). 400# 401# Confirmaron la prórroga del huso horario de verano (Spanish) 402# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 403# or (some English translation): 404# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 405 406# From Mariano Absatz (2010-04-12): 407# yes...I can confirm this...and given that San Luis keeps calling 408# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 409# rules...San Luis is still using "Western ARgentina Time" and it got 410# stuck on Summer daylight savings time even though the summer is over. 411 412# From Paul Eggert (2013-09-05): 413# Perhaps San Luis operates on the legal fiction that it is at UTC-4 414# with perpetual summer time, but ordinary usage typically seems to 415# just say it's at UTC-3; see, for example, 416# http://es.wikipedia.org/wiki/Hora_oficial_argentina 417# We've documented similar situations as being plain changes to 418# standard time, so let's do that here too. This does not change UTC 419# offsets, only tm_isdst and the time zone abbreviations. One minor 420# plus is that this silences a zic complaint that there's no POSIX TZ 421# setting for time stamps past 2038. 422 423# From Paul Eggert (2013-02-21): 424# Milne says Córdoba time was -4:16:48.2. Round to the nearest second. 425 426# Zone NAME GMTOFF RULES FORMAT [UNTIL] 427# 428# Buenos Aires (BA), Capital Federal (CF), 429Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 430 -4:16:48 - CMT 1920 May # Córdoba Mean Time 431 -4:00 - ART 1930 Dec 432 -4:00 Arg AR%sT 1969 Oct 5 433 -3:00 Arg AR%sT 1999 Oct 3 434 -4:00 Arg AR%sT 2000 Mar 3 435 -3:00 Arg AR%sT 436# 437# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), 438# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 439# 440# Shanks & Pottenger also make the following claims, which we haven't verified: 441# - Formosa switched to -3:00 on 1991-01-07. 442# - Misiones switched to -3:00 on 1990-12-29. 443# - Chaco switched to -3:00 on 1991-01-04. 444# - Santiago del Estero switched to -4:00 on 1991-04-01, 445# then to -3:00 on 1991-04-26. 446# 447Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 448 -4:16:48 - CMT 1920 May 449 -4:00 - ART 1930 Dec 450 -4:00 Arg AR%sT 1969 Oct 5 451 -3:00 Arg AR%sT 1991 Mar 3 452 -4:00 - WART 1991 Oct 20 453 -3:00 Arg AR%sT 1999 Oct 3 454 -4:00 Arg AR%sT 2000 Mar 3 455 -3:00 Arg AR%sT 456# 457# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) 458Zone America/Argentina/Salta -4:21:40 - 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 3 463 -4:00 - WART 1991 Oct 20 464 -3:00 Arg AR%sT 1999 Oct 3 465 -4:00 Arg AR%sT 2000 Mar 3 466 -3:00 Arg AR%sT 2008 Oct 18 467 -3:00 - ART 468# 469# Tucumán (TM) 470Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 471 -4:16:48 - CMT 1920 May 472 -4:00 - ART 1930 Dec 473 -4:00 Arg AR%sT 1969 Oct 5 474 -3:00 Arg AR%sT 1991 Mar 3 475 -4:00 - WART 1991 Oct 20 476 -3:00 Arg AR%sT 1999 Oct 3 477 -4:00 Arg AR%sT 2000 Mar 3 478 -3:00 - ART 2004 Jun 1 479 -4:00 - WART 2004 Jun 13 480 -3:00 Arg AR%sT 481# 482# La Rioja (LR) 483Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 484 -4:16:48 - CMT 1920 May 485 -4:00 - ART 1930 Dec 486 -4:00 Arg AR%sT 1969 Oct 5 487 -3:00 Arg AR%sT 1991 Mar 1 488 -4:00 - WART 1991 May 7 489 -3:00 Arg AR%sT 1999 Oct 3 490 -4:00 Arg AR%sT 2000 Mar 3 491 -3:00 - ART 2004 Jun 1 492 -4:00 - WART 2004 Jun 20 493 -3:00 Arg AR%sT 2008 Oct 18 494 -3:00 - ART 495# 496# San Juan (SJ) 497Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 498 -4:16:48 - CMT 1920 May 499 -4:00 - ART 1930 Dec 500 -4:00 Arg AR%sT 1969 Oct 5 501 -3:00 Arg AR%sT 1991 Mar 1 502 -4:00 - WART 1991 May 7 503 -3:00 Arg AR%sT 1999 Oct 3 504 -4:00 Arg AR%sT 2000 Mar 3 505 -3:00 - ART 2004 May 31 506 -4:00 - WART 2004 Jul 25 507 -3:00 Arg AR%sT 2008 Oct 18 508 -3:00 - ART 509# 510# Jujuy (JY) 511Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 512 -4:16:48 - CMT 1920 May 513 -4:00 - ART 1930 Dec 514 -4:00 Arg AR%sT 1969 Oct 5 515 -3:00 Arg AR%sT 1990 Mar 4 516 -4:00 - WART 1990 Oct 28 517 -4:00 1:00 WARST 1991 Mar 17 518 -4:00 - WART 1991 Oct 6 519 -3:00 1:00 ARST 1992 520 -3:00 Arg AR%sT 1999 Oct 3 521 -4:00 Arg AR%sT 2000 Mar 3 522 -3:00 Arg AR%sT 2008 Oct 18 523 -3:00 - ART 524# 525# Catamarca (CT), Chubut (CH) 526Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 527 -4:16:48 - CMT 1920 May 528 -4:00 - ART 1930 Dec 529 -4:00 Arg AR%sT 1969 Oct 5 530 -3:00 Arg AR%sT 1991 Mar 3 531 -4:00 - WART 1991 Oct 20 532 -3:00 Arg AR%sT 1999 Oct 3 533 -4:00 Arg AR%sT 2000 Mar 3 534 -3:00 - ART 2004 Jun 1 535 -4:00 - WART 2004 Jun 20 536 -3:00 Arg AR%sT 2008 Oct 18 537 -3:00 - ART 538# 539# Mendoza (MZ) 540Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 541 -4:16:48 - CMT 1920 May 542 -4:00 - ART 1930 Dec 543 -4:00 Arg AR%sT 1969 Oct 5 544 -3:00 Arg AR%sT 1990 Mar 4 545 -4:00 - WART 1990 Oct 15 546 -4:00 1:00 WARST 1991 Mar 1 547 -4:00 - WART 1991 Oct 15 548 -4:00 1:00 WARST 1992 Mar 1 549 -4:00 - WART 1992 Oct 18 550 -3:00 Arg AR%sT 1999 Oct 3 551 -4:00 Arg AR%sT 2000 Mar 3 552 -3:00 - ART 2004 May 23 553 -4:00 - WART 2004 Sep 26 554 -3:00 Arg AR%sT 2008 Oct 18 555 -3:00 - ART 556# 557# San Luis (SL) 558 559Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 560Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S 561 562Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 563 -4:16:48 - CMT 1920 May 564 -4:00 - ART 1930 Dec 565 -4:00 Arg AR%sT 1969 Oct 5 566 -3:00 Arg AR%sT 1990 567 -3:00 1:00 ARST 1990 Mar 14 568 -4:00 - WART 1990 Oct 15 569 -4:00 1:00 WARST 1991 Mar 1 570 -4:00 - WART 1991 Jun 1 571 -3:00 - ART 1999 Oct 3 572 -4:00 1:00 WARST 2000 Mar 3 573 -3:00 - ART 2004 May 31 574 -4:00 - WART 2004 Jul 25 575 -3:00 Arg AR%sT 2008 Jan 21 576 -4:00 SanLuis WAR%sT 2009 Oct 11 577 -3:00 - ART 578# 579# Santa Cruz (SC) 580Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 581 -4:16:48 - CMT 1920 May # Córdoba Mean Time 582 -4:00 - ART 1930 Dec 583 -4:00 Arg AR%sT 1969 Oct 5 584 -3:00 Arg AR%sT 1999 Oct 3 585 -4:00 Arg AR%sT 2000 Mar 3 586 -3:00 - ART 2004 Jun 1 587 -4:00 - WART 2004 Jun 20 588 -3:00 Arg AR%sT 2008 Oct 18 589 -3:00 - ART 590# 591# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) 592Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 593 -4:16:48 - CMT 1920 May # Córdoba Mean Time 594 -4:00 - ART 1930 Dec 595 -4:00 Arg AR%sT 1969 Oct 5 596 -3:00 Arg AR%sT 1999 Oct 3 597 -4:00 Arg AR%sT 2000 Mar 3 598 -3:00 - ART 2004 May 30 599 -4:00 - WART 2004 Jun 20 600 -3:00 Arg AR%sT 2008 Oct 18 601 -3:00 - ART 602 603# Aruba 604Link America/Curacao America/Aruba 605 606# Bolivia 607# Zone NAME GMTOFF RULES FORMAT [UNTIL] 608Zone America/La_Paz -4:32:36 - LMT 1890 609 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 610 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 611 -4:00 - BOT # Bolivia Time 612 613# Brazil 614 615# From Paul Eggert (1993-11-18): 616# The mayor of Rio recently attempted to change the time zone rules 617# just in his city, in order to leave more summer time for the tourist trade. 618# The rule change lasted only part of the day; 619# the federal government refused to follow the city's rules, and business 620# was in a chaos, so the mayor backed down that afternoon. 621 622# From IATA SSIM (1996-02): 623# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 624# Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), 625# Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), 626# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 627# [The last three states are new to this issue of the IATA SSIM.] 628 629# From Gwillim Law (1996-10-07): 630# Geography, history (Tocantins was part of Goiás until 1989), and other 631# sources of time zone information lead me to believe that AL, SE, and TO were 632# always in BR1, and so the only change was whether or not they observed DST.... 633# The earliest issue of the SSIM I have is 2/91. Each issue from then until 634# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 635# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 636# (UTC-4).... The other two time zones given for Brazil are BR3, which is 637# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 638# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 639# become part of the state of Pernambuco). The boundary between BR1 and BR2 640# has never been clearly stated. They've simply been called East and West. 641# However, some conclusions can be drawn from another IATA manual: the Airline 642# Coding Directory, which lists close to 400 airports in Brazil. For each 643# airport it gives a time zone which is coded to the SSIM. From that 644# information, I'm led to conclude that the states of Amapá (AP), Ceará (CE), 645# Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do 646# Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST. 647 648# From Marcos Tadeu (1998-09-27): 649# Brazilian official page <http://pcdsh01.on.br/verao1.html> 650 651# From Jesper Nørgaard (2000-11-03): 652# [For an official list of which regions in Brazil use which time zones, see:] 653# http://pcdsh01.on.br/Fusbr.htm 654# http://pcdsh01.on.br/Fusbrhv.htm 655 656# From Celso Doria via David Madeo (2002-10-09): 657# The reason for the delay this year has to do with elections in Brazil. 658# 659# Unlike in the United States, elections in Brazil are 100% computerized and 660# the results are known almost immediately. Yesterday, it was the first 661# round of the elections when 115 million Brazilians voted for President, 662# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 663# counting (or re-counting) votes anymore and we know there will be a second 664# round for the Presidency and also for some Governors. The 2nd round will 665# take place on October 27th. 666# 667# The reason why the DST will only begin November 3rd is that the thousands 668# of electoral machines used cannot have their time changed, and since the 669# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 670# the Government decided to postpone DST, instead of changing the Constitution 671# (maybe, for the next elections, it will be possible to change the clock)... 672 673# From Rodrigo Severo (2004-10-04): 674# It's just the biannual change made necessary by the much hyped, supposedly 675# modern Brazilian eletronic voting machines which, apparently, can't deal 676# with a time change between the first and the second rounds of the elections. 677 678# From Steffen Thorsen (2007-09-20): 679# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 680# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 681 682# From Paul Schulze (2008-06-24): 683# ...by law number 11.662 of April 24, 2008 (published in the "Diario 684# Oficial da União"...) in Brazil there are changes in the timezones, 685# effective today (00:00am at June 24, 2008) as follows: 686# 687# a) The timezone UTC+5 is extinguished, with all the Acre state and the 688# part of the Amazonas state that had this timezone now being put to the 689# timezone UTC+4 690# b) The whole Pará state now is put at timezone UTC+3, instead of just 691# part of it, as was before. 692# 693# This change follows a proposal of senator Tiao Viana of Acre state, that 694# proposed it due to concerns about open television channels displaying 695# programs inappropriate to youths in the states that had the timezone 696# UTC+5 too early in the night. In the occasion, some more corrections 697# were proposed, trying to unify the timezones of any given state. This 698# change modifies timezone rules defined in decree 2.784 of 18 June, 699# 1913. 700 701# From Rodrigo Severo (2008-06-24): 702# Just correcting the URL: 703# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 704# 705# As a result of the above Decree I believe the America/Rio_Branco 706# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 707# be created to represent the...west side of the Pará State. I 708# suggest this new timezone be called Santarem as the most 709# important/populated city in the affected area. 710# 711# This new timezone would be the same as the Rio_Branco timezone up to 712# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 713 714# From Alex Krivenyshev (2008-06-24): 715# This is a quick reference page for New and Old Brazil Time Zones map. 716# http://www.worldtimezone.com/brazil-time-new-old.php 717# 718# - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 719# (state Acre and the part of the Amazonas will be UTC/GMT-04) - western 720# part of Par state is moving to one timezone UTC-03 (from UTC-04). 721 722# From Paul Eggert (2002-10-10): 723# The official decrees referenced below are mostly taken from 724# Decretos sobre o Horário de Verão no Brasil. 725# http://pcdsh01.on.br/DecHV.html 726 727# From Steffen Thorsen (2008-08-29): 728# As announced by the government and many newspapers in Brazil late 729# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 730# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 731# past years experience with the elections, there was a good chance that 732# the start was postponed to November, but it did not happen this year. 733# 734# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 735# 736# An official page about it: 737# http://www.mme.gov.br/site/news/detail.do?newsId=16722 738# Note that this link does not always work directly, but must be accessed 739# by going to 740# http://www.mme.gov.br/first 741# 742# One example link that works directly: 743# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 744# (Portuguese) 745# 746# We have a written a short article about it as well: 747# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 748# 749# From Alexander Krivenyshev (2011-10-04): 750# State Bahia will return to Daylight savings time this year after 8 years off. 751# The announcement was made by Governor Jaques Wagner in an interview to a 752# television station in Salvador. 753 754# In Portuguese: 755# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 756# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 757 758# From Guilherme Bernardes Rodrigues (2011-10-07): 759# There is news in the media, however there is still no decree about it. 760# I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the 761# official agency about time in Brazil, and she confirmed that the old rule is 762# still in force. 763 764# From Guilherme Bernardes Rodrigues (2011-10-14) 765# It's official, the President signed a decree that includes Bahia in summer 766# time. 767# [ and in a second message (same day): ] 768# I found the decree. 769# 770# DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011 771# Link : 772# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 773 774# From Kelley Cook (2012-10-16): 775# The governor of state of Bahia in Brazil announced on Thursday that 776# due to public pressure, he is reversing the DST policy they implemented 777# last year and will not be going to Summer Time on October 21st.... 778# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia 779 780# From Rodrigo Severo (2012-10-16): 781# Tocantins state will have DST. 782# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html 783 784# From Steffen Thorsen (2013-09-20): 785# Tocantins in Brazil is very likely not to observe DST from October.... 786# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto 787# We will keep this article updated when this is confirmed: 788# http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html 789 790# From Steffen Thorsen (2013-10-17): 791# http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html 792# Senator Jorge Viana announced that Acre will change time zone on November 10. 793# He did not specify the time of the change, nor if western parts of Amazonas 794# will change as well. 795# 796# From Paul Eggert (2013-10-17): 797# For now, assume western Amazonas will change as well. 798 799# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 800# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01) 801# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10) 802Rule Brazil 1931 only - Oct 3 11:00 1:00 S 803Rule Brazil 1932 1933 - Apr 1 0:00 0 - 804Rule Brazil 1932 only - Oct 3 0:00 1:00 S 805# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10) 806# revoked DST. 807# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24) 808# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13) 809Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 810Rule Brazil 1950 only - Apr 16 1:00 0 - 811Rule Brazil 1951 1952 - Apr 1 0:00 0 - 812# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24) 813Rule Brazil 1953 only - Mar 1 0:00 0 - 814# Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30) 815# revoked DST. 816# Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18) 817# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 818# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 819# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03) 820# extended the above decree to all of the national territory on 12-09. 821Rule Brazil 1963 only - Dec 9 0:00 1:00 S 822# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25) 823# extended summer time by one day to 1964-03-01 00:00 (start of school). 824Rule Brazil 1964 only - Mar 1 0:00 0 - 825# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27) 826Rule Brazil 1965 only - Jan 31 0:00 1:00 S 827Rule Brazil 1965 only - Mar 31 0:00 0 - 828# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22) 829Rule Brazil 1965 only - Dec 1 0:00 1:00 S 830# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18) 831Rule Brazil 1966 1968 - Mar 1 0:00 0 - 832Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 833# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15) 834# revoked DST. 835# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27) 836Rule Brazil 1985 only - Nov 2 0:00 1:00 S 837# Decree 92,310 (1986-01-21) 838# Decree 92,463 (1986-03-13) 839Rule Brazil 1986 only - Mar 15 0:00 0 - 840# Decree 93,316 (1986-10-01) 841Rule Brazil 1986 only - Oct 25 0:00 1:00 S 842Rule Brazil 1987 only - Feb 14 0:00 0 - 843# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22) 844Rule Brazil 1987 only - Oct 25 0:00 1:00 S 845Rule Brazil 1988 only - Feb 7 0:00 0 - 846# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12) 847# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 848Rule Brazil 1988 only - Oct 16 0:00 1:00 S 849Rule Brazil 1989 only - Jan 29 0:00 0 - 850# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21) 851# with the same exceptions 852Rule Brazil 1989 only - Oct 15 0:00 1:00 S 853Rule Brazil 1990 only - Feb 11 0:00 0 - 854# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17) 855# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 856# Decree 99,629 (1990-10-19) adds BA, MT. 857Rule Brazil 1990 only - Oct 21 0:00 1:00 S 858Rule Brazil 1991 only - Feb 17 0:00 0 - 859# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25) 860# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 861Rule Brazil 1991 only - Oct 20 0:00 1:00 S 862Rule Brazil 1992 only - Feb 9 0:00 0 - 863# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16) 864# adopted by same states. 865Rule Brazil 1992 only - Oct 25 0:00 1:00 S 866Rule Brazil 1993 only - Jan 31 0:00 0 - 867# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28) 868# adopted by same states, plus AM. 869# Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22; 870# web page corrected 2004-01-07) adopted by same states, minus AM. 871# Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14) 872# adopted by same states, plus MT and TO. 873# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13) 874# adds AL, SE. 875Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 876Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 877Rule Brazil 1996 only - Feb 11 0:00 0 - 878# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04) 879# adopted by same states, minus AL, SE. 880Rule Brazil 1996 only - Oct 6 0:00 1:00 S 881Rule Brazil 1997 only - Feb 16 0:00 0 - 882# From Daniel C. Sobral (1998-02-12): 883# In 1997, the DS began on October 6. The stated reason was that 884# because international television networks ignored Brazil's policy on DS, 885# they bought the wrong times on satellite for coverage of Pope's visit. 886# This year, the ending date of DS was postponed to March 1 887# to help dealing with the shortages of electric power. 888# 889# Decree 2,317 (1997-09-04), adopted by same states. 890Rule Brazil 1997 only - Oct 6 0:00 1:00 S 891# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG> 892# (1998-02-10) 893Rule Brazil 1998 only - Mar 1 0:00 0 - 894# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11) 895# adopted by the same states as before. 896Rule Brazil 1998 only - Oct 11 0:00 1:00 S 897Rule Brazil 1999 only - Feb 21 0:00 0 - 898# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif> 899# (1999-08-23) adopted by same states. 900# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30) 901# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 902Rule Brazil 1999 only - Oct 3 0:00 1:00 S 903Rule Brazil 2000 only - Feb 27 0:00 0 - 904# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06) 905# adopted by the same states as before. 906# Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13) 907# repeals DST in PE and RR, effective 2000-10-15 00:00. 908# Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17) 909# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 910# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif> 911# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 912Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 913Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 914# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 915# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm> 916Rule Brazil 2002 only - Nov 3 0:00 1:00 S 917# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 918# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm> 919Rule Brazil 2003 only - Oct 19 0:00 1:00 S 920# Decree 5,223 (2004-10-01) reestablishes DST in MT. 921# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm> 922Rule Brazil 2004 only - Nov 2 0:00 1:00 S 923# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19), 924# adopted by the same states as before. 925Rule Brazil 2005 only - Oct 16 0:00 1:00 S 926# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03), 927# adopted by the same states as before. 928Rule Brazil 2006 only - Nov 5 0:00 1:00 S 929Rule Brazil 2007 only - Feb 25 0:00 0 - 930# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26), 931# adopted by the same states as before. 932Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 933# From Frederico A. C. Neves (2008-09-10): 934# According to this decree 935# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 936# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 937# 3rd Feb Sunday. There is an exception on the return date when this is 938# the Carnival Sunday then the return date will be the next Sunday... 939Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 940Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 941Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 942Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 943Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 944Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 945Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 946Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 947Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 948Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 949Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 950Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 951Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 952# From Arthur David Olson (2008-09-29): 953# The next is wrong in some years but is better than nothing. 954Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 955 956# The latest ruleset listed above says that the following states observe DST: 957# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 958 959# Zone NAME GMTOFF RULES FORMAT [UNTIL] 960# 961# Fernando de Noronha (administratively part of PE) 962Zone America/Noronha -2:09:40 - LMT 1914 963 -2:00 Brazil FN%sT 1990 Sep 17 964 -2:00 - FNT 1999 Sep 30 965 -2:00 Brazil FN%sT 2000 Oct 15 966 -2:00 - FNT 2001 Sep 13 967 -2:00 Brazil FN%sT 2002 Oct 1 968 -2:00 - FNT 969# Other Atlantic islands have no permanent settlement. 970# These include Trindade and Martim Vaz (administratively part of ES), 971# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 972# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 973# it also included the Penedos. 974# 975# Amapá (AP), east Pará (PA) 976# East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. 977# The division between east and west Pará is the river Xingu. 978# In the north a very small part from the river Javary (now Jari I guess, 979# the border with Amapá) to the Amazon, then to the Xingu. 980Zone America/Belem -3:13:56 - LMT 1914 981 -3:00 Brazil BR%sT 1988 Sep 12 982 -3:00 - BRT 983# 984# west Pará (PA) 985# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. 986Zone America/Santarem -3:38:48 - LMT 1914 987 -4:00 Brazil AM%sT 1988 Sep 12 988 -4:00 - AMT 2008 Jun 24 0:00 989 -3:00 - BRT 990# 991# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), 992# Paraíba (PB) 993Zone America/Fortaleza -2:34:00 - LMT 1914 994 -3:00 Brazil BR%sT 1990 Sep 17 995 -3:00 - BRT 1999 Sep 30 996 -3:00 Brazil BR%sT 2000 Oct 22 997 -3:00 - BRT 2001 Sep 13 998 -3:00 Brazil BR%sT 2002 Oct 1 999 -3:00 - BRT 1000# 1001# Pernambuco (PE) (except Atlantic islands) 1002Zone America/Recife -2:19:36 - LMT 1914 1003 -3:00 Brazil BR%sT 1990 Sep 17 1004 -3:00 - BRT 1999 Sep 30 1005 -3:00 Brazil BR%sT 2000 Oct 15 1006 -3:00 - BRT 2001 Sep 13 1007 -3:00 Brazil BR%sT 2002 Oct 1 1008 -3:00 - BRT 1009# 1010# Tocantins (TO) 1011Zone America/Araguaina -3:12:48 - LMT 1914 1012 -3:00 Brazil BR%sT 1990 Sep 17 1013 -3:00 - BRT 1995 Sep 14 1014 -3:00 Brazil BR%sT 2003 Sep 24 1015 -3:00 - BRT 2012 Oct 21 1016 -3:00 Brazil BR%sT 2013 Sep 1017 -3:00 - BRT 1018# 1019# Alagoas (AL), Sergipe (SE) 1020Zone America/Maceio -2:22:52 - LMT 1914 1021 -3:00 Brazil BR%sT 1990 Sep 17 1022 -3:00 - BRT 1995 Oct 13 1023 -3:00 Brazil BR%sT 1996 Sep 4 1024 -3:00 - BRT 1999 Sep 30 1025 -3:00 Brazil BR%sT 2000 Oct 22 1026 -3:00 - BRT 2001 Sep 13 1027 -3:00 Brazil BR%sT 2002 Oct 1 1028 -3:00 - BRT 1029# 1030# Bahia (BA) 1031# There are too many Salvadors elsewhere, so use America/Bahia instead 1032# of America/Salvador. 1033Zone America/Bahia -2:34:04 - LMT 1914 1034 -3:00 Brazil BR%sT 2003 Sep 24 1035 -3:00 - BRT 2011 Oct 16 1036 -3:00 Brazil BR%sT 2012 Oct 21 1037 -3:00 - BRT 1038# 1039# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), 1040# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), 1041# Santa Catarina (SC), Rio Grande do Sul (RS) 1042Zone America/Sao_Paulo -3:06:28 - LMT 1914 1043 -3:00 Brazil BR%sT 1963 Oct 23 0:00 1044 -3:00 1:00 BRST 1964 1045 -3:00 Brazil BR%sT 1046# 1047# Mato Grosso do Sul (MS) 1048Zone America/Campo_Grande -3:38:28 - LMT 1914 1049 -4:00 Brazil AM%sT 1050# 1051# Mato Grosso (MT) 1052Zone America/Cuiaba -3:44:20 - LMT 1914 1053 -4:00 Brazil AM%sT 2003 Sep 24 1054 -4:00 - AMT 2004 Oct 1 1055 -4:00 Brazil AM%sT 1056# 1057# Rondônia (RO) 1058Zone America/Porto_Velho -4:15:36 - LMT 1914 1059 -4:00 Brazil AM%sT 1988 Sep 12 1060 -4:00 - AMT 1061# 1062# Roraima (RR) 1063Zone America/Boa_Vista -4:02:40 - LMT 1914 1064 -4:00 Brazil AM%sT 1988 Sep 12 1065 -4:00 - AMT 1999 Sep 30 1066 -4:00 Brazil AM%sT 2000 Oct 15 1067 -4:00 - AMT 1068# 1069# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto 1070# The great circle line from Tabatinga to Porto Acre divides 1071# east from west Amazonas. 1072Zone America/Manaus -4:00:04 - LMT 1914 1073 -4:00 Brazil AM%sT 1988 Sep 12 1074 -4:00 - AMT 1993 Sep 28 1075 -4:00 Brazil AM%sT 1994 Sep 22 1076 -4:00 - AMT 1077# 1078# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1079# Eirunepé, Envira, Ipixuna 1080Zone America/Eirunepe -4:39:28 - LMT 1914 1081 -5:00 Brazil AC%sT 1988 Sep 12 1082 -5:00 - ACT 1993 Sep 28 1083 -5:00 Brazil AC%sT 1994 Sep 22 1084 -5:00 - ACT 2008 Jun 24 0:00 1085 -4:00 - AMT 2013 Nov 10 1086 -5:00 - ACT 1087# 1088# Acre (AC) 1089Zone America/Rio_Branco -4:31:12 - LMT 1914 1090 -5:00 Brazil AC%sT 1988 Sep 12 1091 -5:00 - ACT 2008 Jun 24 0:00 1092 -4:00 - AMT 2013 Nov 10 1093 -5:00 - ACT 1094 1095# Chile 1096 1097# From Paul Eggert (2015-04-03): 1098# Shanks & Pottenger says America/Santiago introduced standard time in 1099# 1890 and rounds its UTC offset to 70W40; guess that in practice this 1100# was the same offset as in 1916-1919. It also says Pacific/Easter 1101# standardized on 109W22 in 1890; assume this didn't change the clocks. 1102# 1103# Dates for America/Santiago from 1910 to 2004 are primarily from 1104# the following source, cited by Oscar van Vlijmen (2006-10-08): 1105# [1] Chile Law 1106# http://www.webexhibits.org/daylightsaving/chile.html 1107# This contains a copy of a this official table: 1108# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) 1109# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm 1110# [1] needs several corrections, though. 1111# 1112# The first set of corrections is from: 1113# [2] History of the Official Time of Chile 1114# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: 1115# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html 1116# This is an English translation of: 1117# Historia de la hora oficial de Chile (retrieved 2012-10-24). See: 1118# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm 1119# A fancier Spanish version (requiring mouse-clicking) is at: 1120# http://www.horaoficial.cl/historia_hora.html 1121# Conflicts between [1] and [2] were resolved as follows: 1122# 1123# - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites 1124# Boletín No. 1, Aviso No. 1 (1910). Go with [2]. 1125# 1126# - [1] says SMT was -4:42:45, [2] says Chile's official time from 1127# 1916 to 1919 was -4:42:46.3, the meridian of Chile's National 1128# Astronomical Observatory (OAN), then located in what is now 1129# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. 1130# 1131# - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites 1132# Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2]. 1133# 1134# - [1] does not give times for transitions; assume they occur 1135# at midnight mainland time, the current common practice. However, 1136# go with [2]'s specification of 23:00 for the 1947-05-21 transition. 1137# 1138# Another correction to [1] is from Jesper Nørgaard Welen, who 1139# wrote (2006-10-08), "I think that there are some obvious mistakes in 1140# the suggested link from Oscar van Vlijmen,... for instance entry 66 1141# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at 1142# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16 1143# respectively), but anyhow it clears up some doubts too." 1144# 1145# Data for Pacific/Easter from 1910 through 1967 come from Shanks & 1146# Pottenger. After that, for lack of better info assume 1147# Pacific/Easter is always two hours behind America/Santiago; 1148# this is known to work for DST transitions starting in 2008 and 1149# may well be true for earlier transitions. 1150 1151# From Eduardo Krell (1995-10-19): 1152# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1153# of October.... The law is the same for March and October. 1154# (1998-09-29): 1155# Because of the drought this year, the government decided to go into 1156# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1157# (unless there's another dry season next year, I guess). 1158 1159# From Julio I. Pacheco Troncoso (1999-03-18): 1160# Because of the same drought, the government decided to end DST later, 1161# on April 3, (one-time change). 1162 1163# From Germán Poo-Caamaño (2008-03-03): 1164# Due to drought, Chile extends Daylight Time in three weeks. This 1165# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1166# and Saturday 3/29 at 22:00 for Pacific/Easter) 1167# The Supreme Decree is located at 1168# http://www.shoa.cl/servicios/supremo316.pdf 1169# 1170# From José Miguel Garrido (2008-03-05): 1171# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1172 1173# From Angel Chiang (2010-03-04): 1174# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1175# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1176# 1177# From Arthur David Olson (2010-03-06): 1178# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1179 1180# From Glenn Eychaner (2011-03-28): 1181# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1182# In English: 1183# Chile's clocks will go back an hour this year on the 7th of May instead 1184# of this Saturday. They will go forward again the 3rd Saturday in 1185# August, not in October as they have since 1968. 1186 1187# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1188# As stated in the website of the Chilean Energy Ministry 1189# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1190# The Chilean Government has decided to postpone the entrance into winter time 1191# (to leave DST) from March 11 2012 to April 28th 2012.... 1192# Quote from the website communication: 1193# 1194# 6. For the year 2012, the dates of entry into winter time will be as follows: 1195# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1196# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1197# of the same day. 1198# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1199# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1200# 01:00 on September 2. 1201 1202# From Steffen Thorsen (2013-02-15): 1203# According to several news sources, Chile has extended DST this year, 1204# they will end DST later and start DST earlier than planned. They 1205# hope to save energy. The new end date is 2013-04-28 00:00 and new 1206# start date is 2013-09-08 00:00.... 1207# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm 1208 1209# From José Miguel Garrido (2014-02-19): 1210# Today appeared in the Diario Oficial a decree amending the time change 1211# dates to 2014. 1212# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) 1213# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) 1214# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf 1215 1216# From Eduardo Romero Urra (2015-03-03): 1217# Today has been published officially that Chile will use the DST time 1218# permanently until March 25 of 2017 1219# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg 1220# 1221# From Paul Eggert (2015-03-03): 1222# For now, assume that the extension will persist indefinitely. 1223 1224# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1225Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 1226Rule Chile 1928 1932 - Apr 1 0:00 0 - 1227Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1228Rule Chile 1969 only - Mar 30 3:00u 0 - 1229Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1230Rule Chile 1970 only - Mar 29 3:00u 0 - 1231Rule Chile 1971 only - Mar 14 3:00u 0 - 1232Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1233Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1234Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1235Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1236Rule Chile 1987 only - Apr 12 3:00u 0 - 1237Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - 1238Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S 1239Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1240Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1241Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1242Rule Chile 1997 only - Mar 30 3:00u 0 - 1243Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1244Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1245Rule Chile 1999 only - Apr 4 3:00u 0 - 1246Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1247Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1248# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1249# which is used below in specifying the transition. 1250Rule Chile 2008 only - Mar 30 3:00u 0 - 1251Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1252Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1253Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1254Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1255Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 - 1256Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S 1257# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1258# (1996-09) says 1998-03-08. Ignore these. 1259# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1260Zone America/Santiago -4:42:46 - LMT 1890 1261 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time 1262 -5:00 - CLT 1916 Jul 1 # Chile Time 1263 -4:42:46 - SMT 1918 Sep 10 1264 -4:00 - CLT 1919 Jul 1 1265 -4:42:46 - SMT 1927 Sep 1 1266 -5:00 Chile CL%sT 1932 Sep 1 1267 -4:00 - CLT 1942 Jun 1 1268 -5:00 - CLT 1942 Aug 1 1269 -4:00 - CLT 1946 Jul 15 1270 -4:00 1:00 CLST 1946 Sep 1 # central Chile 1271 -4:00 - CLT 1947 Apr 1 1272 -5:00 - CLT 1947 May 21 23:00 1273 -4:00 Chile CL%sT 2015 Apr 26 3:00u 1274 -3:00 - CLT 1275Zone Pacific/Easter -7:17:28 - LMT 1890 1276 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1277 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time 1278 -6:00 Chile EAS%sT 2015 Apr 26 3:00u 1279 -5:00 - EAST 1280# 1281# Salas y Gómez Island is uninhabited. 1282# Other Chilean locations, including Juan Fernández Is, Desventuradas Is, 1283# and Antarctic bases, are like America/Santiago. 1284 1285# Antarctic base using South American rules 1286# (See the file 'antarctica' for more.) 1287# 1288# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 1289# 1290# From Ethan Dicks (1996-10-06): 1291# It keeps the same time as Punta Arenas, Chile, because, just like us 1292# and the South Pole, that's the other end of their supply line.... 1293# I verified with someone who was there that since 1980, 1294# Palmer has followed Chile. Prior to that, before the Falklands War, 1295# Palmer used to be supplied from Argentina. 1296# 1297# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1298Zone Antarctica/Palmer 0 - zzz 1965 1299 -4:00 Arg AR%sT 1969 Oct 5 1300 -3:00 Arg AR%sT 1982 May 1301 -4:00 Chile CL%sT 2015 Apr 26 3:00u 1302 -3:00 - CLT 1303 1304# Colombia 1305 1306# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, 1307# "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1308 1309# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1310Rule CO 1992 only - May 3 0:00 1:00 S 1311Rule CO 1993 only - Apr 4 0:00 0 - 1312# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1313Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 1314 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time 1315 -5:00 CO CO%sT # Colombia Time 1316# Malpelo, Providencia, San Andres 1317# no information; probably like America/Bogota 1318 1319# Curaçao 1320 1321# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. 1322# 1323# From Paul Eggert (2006-03-22): 1324# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1325# -4:00 since standard time was introduced on 1912-03-02; and that 1326# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1327# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1328# Saba Island has been like Curaçao. 1329# This all predates our 1970 cutoff, though. 1330# 1331# By July 2007 Curaçao and St Maarten are planned to become 1332# associated states within the Netherlands, much like Aruba; 1333# Bonaire, Saba and St Eustatius would become directly part of the 1334# Netherlands as Kingdom Islands. This won't affect their time zones 1335# though, as far as we know. 1336# 1337# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1338Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 1339 -4:30 - ANT 1965 # Netherlands Antilles Time 1340 -4:00 - AST 1341 1342# From Arthur David Olson (2011-06-15): 1343# use links for places with new iso3166 codes. 1344# The name "Lower Prince's Quarter" is both longer than fourteen characters 1345# and contains an apostrophe; use "Lower_Princes" below. 1346 1347Link America/Curacao America/Lower_Princes # Sint Maarten 1348Link America/Curacao America/Kralendijk # Caribbean Netherlands 1349 1350# Ecuador 1351# 1352# Milne says the Central and South American Telegraph Company used -5:24:15. 1353# 1354# From Paul Eggert (2007-03-04): 1355# Apparently Ecuador had a failed experiment with DST in 1992. 1356# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1357# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1358# talk about "hora Sixto". Leave this alone for now, as we have no data. 1359# 1360# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1361Zone America/Guayaquil -5:19:20 - LMT 1890 1362 -5:14:00 - QMT 1931 # Quito Mean Time 1363 -5:00 - ECT # Ecuador Time 1364Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1365 -5:00 - ECT 1986 1366 -6:00 - GALT # Galápagos Time 1367 1368# Falklands 1369 1370# From Paul Eggert (2006-03-22): 1371# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1372# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1373 1374# From Falkland Islands Government Office, London (2001-01-22) 1375# via Jesper Nørgaard: 1376# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1377# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1378# September. It is anticipated that the clocks will revert back at 2 1379# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1380# Sunday 1 September. 1381 1382# From Rives McDow (2001-02-13): 1383# 1384# I have communicated several times with people there, and the last 1385# time I had communications that was helpful was in 1998. Here is 1386# what was said then: 1387# 1388# "The general rule was that Stanley used daylight saving and the Camp 1389# did not. However for various reasons many people in the Camp have 1390# started to use daylight saving (known locally as 'Stanley Time') 1391# There is no rule as to who uses daylight saving - it is a matter of 1392# personal choice and so it is impossible to draw a map showing who 1393# uses it and who does not. Any list would be out of date as soon as 1394# it was produced. This year daylight saving ended on April 18/19th 1395# and started again on September 12/13th. I do not know what the rule 1396# is, but can find out if you like. We do not change at the same time 1397# as UK or Chile." 1398# 1399# I did have in my notes that the rule was "Second Saturday in Sep at 1400# 0:00 until third Saturday in Apr at 0:00". I think that this does 1401# not agree in some cases with Shanks; is this true? 1402# 1403# Also, there is no mention in the list that some areas in the 1404# Falklands do not use DST. I have found in my communications there 1405# that these areas are on the western half of East Falkland and all of 1406# West Falkland. Stanley is the only place that consistently observes 1407# DST. Again, as in other places in the world, the farmers don't like 1408# it. West Falkland is almost entirely sheep farmers. 1409# 1410# I know one lady there that keeps a list of which farm keeps DST and 1411# which doesn't each year. She runs a shop in Stanley, and says that 1412# the list changes each year. She uses it to communicate to her 1413# customers, catching them when they are home for lunch or dinner. 1414 1415# From Paul Eggert (2001-03-05): 1416# For now, we'll just record the time in Stanley, since we have no 1417# better info. 1418 1419# From Steffen Thorsen (2011-04-01): 1420# The Falkland Islands will not turn back clocks this winter, but stay on 1421# daylight saving time. 1422# 1423# One source: 1424# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1425# 1426# We have gotten this confirmed by a clerk of the legislative assembly: 1427# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1428# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1429# hours) on the first Sunday of September at 0200hrs. 1430# 1431# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1432# will not revert to local mean time, but clocks will remain on Summer 1433# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1434# change to local time following the trial period will be notified. 1435# 1436# From Andrew Newman (2012-02-24) 1437# A letter from Justin McPhee, Chief Executive, 1438# Cable & Wireless Falkland Islands (dated 2012-02-22) 1439# states... 1440# The current Atlantic/Stanley entry under South America expects the 1441# clocks to go back to standard Falklands Time (FKT) on the 15th April. 1442# The database entry states that in 2011 Stanley was staying on fixed 1443# summer time on a trial basis only. FIG need to contact IANA and/or 1444# the maintainers of the database to inform them we're adopting 1445# the same policy this year and suggest recommendations for future years. 1446# 1447# For now we will assume permanent summer time for the Falklands 1448# until advised differently (to apply for 2012 and beyond, after the 2011 1449# experiment was apparently successful.) 1450# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1451Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1452Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1453Rule Falk 1939 only - Oct 1 0:00 1:00 S 1454Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1455Rule Falk 1943 only - Jan 1 0:00 0 - 1456Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1457Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1458Rule Falk 1984 only - Sep 16 0:00 1:00 S 1459Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1460Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1461Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1462Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1463# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1464Zone Atlantic/Stanley -3:51:24 - LMT 1890 1465 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1466 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1467 -3:00 Falk FK%sT 1985 Sep 15 1468 -4:00 Falk FK%sT 2010 Sep 5 2:00 1469 -3:00 - FKST 1470 1471# French Guiana 1472# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1473Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1474 -4:00 - GFT 1967 Oct # French Guiana Time 1475 -3:00 - GFT 1476 1477# Guyana 1478# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1479Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1480 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1481 -3:45 - GYT 1975 Jul 31 # Guyana Time 1482 -3:00 - GYT 1991 1483# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1484 -4:00 - GYT 1485 1486# Paraguay 1487# 1488# From Paul Eggert (2006-03-22): 1489# Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 1490# and autumn transitions are 00:00 -> 23:00. Go with pre-1999 1491# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1492# 1493# From Waldemar Villamayor-Venialbo (2013-09-20): 1494# No time of the day is established for the adjustment, so people normally 1495# adjust their clocks at 0 hour of the given dates. 1496# 1497# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1498Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1499Rule Para 1975 1978 - Mar 1 0:00 0 - 1500Rule Para 1979 1991 - Apr 1 0:00 0 - 1501Rule Para 1989 only - Oct 22 0:00 1:00 S 1502Rule Para 1990 only - Oct 1 0:00 1:00 S 1503Rule Para 1991 only - Oct 6 0:00 1:00 S 1504Rule Para 1992 only - Mar 1 0:00 0 - 1505Rule Para 1992 only - Oct 5 0:00 1:00 S 1506Rule Para 1993 only - Mar 31 0:00 0 - 1507Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1508Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1509Rule Para 1996 only - Mar 1 0:00 0 - 1510# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1511# From Steffen Thorsen (2000-10-02): 1512# I have three independent reports that Paraguay changed to DST this Sunday 1513# (10-01). 1514# 1515# Translated by Gwillim Law (2001-02-27) from 1516# Noticias, a daily paper in Asunción, Paraguay (2000-10-01): 1517# http://www.diarionoticias.com.py/011000/nacional/naciona1.htm 1518# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1519# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1520# system has been operating for several years. Formerly there was a separate 1521# decree each year; the new law has the same effect, but permanently. Every 1522# year, the time will change on the first Sunday of October; likewise, the 1523# clock will be set back on the first Sunday of March. 1524# 1525Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1526# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1527Rule Para 1997 only - Feb lastSun 0:00 0 - 1528# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1529# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1530Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1531# From Rives McDow (2002-02-28): 1532# A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the 1533# dst method to be from the first Sunday in September to the first Sunday in 1534# April. 1535Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1536Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1537# 1538# From Jesper Nørgaard Welen (2005-01-02): 1539# There are several sources that claim that Paraguay made 1540# a timezone rule change in autumn 2004. 1541# From Steffen Thorsen (2005-01-05): 1542# Decree 1,867 (2004-03-05) 1543# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13) 1544# http://www.presidencia.gov.py/decretos/D1867.pdf 1545Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1546Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1547# From Carlos Raúl Perasso (2010-02-18): 1548# By decree number 3958 issued yesterday 1549# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1550# Paraguay changes its DST schedule, postponing the March rule to April and 1551# modifying the October date. The decree reads: 1552# ... 1553# Art. 1. It is hereby established that from the second Sunday of the month of 1554# April of this year (2010), the official time is to be set back 60 minutes, 1555# and that on the first Sunday of the month of October, it is to be set 1556# forward 60 minutes, in all the territory of the Paraguayan Republic. 1557# ... 1558Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1559Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1560# 1561# From Steffen Thorsen (2013-03-07): 1562# Paraguay will end DST on 2013-03-24 00:00.... 1563# http://www.ande.gov.py/interna.php?id=1075 1564# 1565# From Carlos Raúl Perasso (2013-03-15): 1566# The change in Paraguay is now final. Decree number 10780 1567# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 1568# From Carlos Raúl Perasso (2014-02-28): 1569# Decree 1264 can be found at: 1570# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1571Rule Para 2013 max - Mar Sun>=22 0:00 0 - 1572 1573# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1574Zone America/Asuncion -3:50:40 - LMT 1890 1575 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time 1576 -4:00 - PYT 1972 Oct # Paraguay Time 1577 -3:00 - PYT 1974 Apr 1578 -4:00 Para PY%sT 1579 1580# Peru 1581# 1582# From Evelyn C. Leeper via Mark Brader (2003-10-26) 1583# <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>: 1584# When we were in Peru in 1985-1986, they apparently switched over 1585# sometime between December 29 and January 3 while we were on the Amazon. 1586# 1587# From Paul Eggert (2006-03-22): 1588# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1589 1590# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1591Rule Peru 1938 only - Jan 1 0:00 1:00 S 1592Rule Peru 1938 only - Apr 1 0:00 0 - 1593Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1594Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1595Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1596Rule Peru 1986 1987 - Apr 1 0:00 0 - 1597Rule Peru 1990 only - Jan 1 0:00 1:00 S 1598Rule Peru 1990 only - Apr 1 0:00 0 - 1599# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1600Rule Peru 1994 only - Jan 1 0:00 1:00 S 1601Rule Peru 1994 only - Apr 1 0:00 0 - 1602# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1603Zone America/Lima -5:08:12 - LMT 1890 1604 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1605 -5:00 Peru PE%sT # Peru Time 1606 1607# South Georgia 1608# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1609Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1610 -2:00 - GST # South Georgia Time 1611 1612# South Sandwich Is 1613# uninhabited; scientific personnel have wintered 1614 1615# Suriname 1616# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1617Zone America/Paramaribo -3:40:40 - LMT 1911 1618 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1619 -3:40:36 - PMT 1945 Oct # The capital moved? 1620 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1621 -3:30 - SRT 1984 Oct # Suriname Time 1622 -3:00 - SRT 1623 1624# Trinidad and Tobago 1625# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1626Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1627 -4:00 - AST 1628 1629# These all agree with Trinidad and Tobago since 1970. 1630Link America/Port_of_Spain America/Anguilla 1631Link America/Port_of_Spain America/Antigua 1632Link America/Port_of_Spain America/Dominica 1633Link America/Port_of_Spain America/Grenada 1634Link America/Port_of_Spain America/Guadeloupe 1635Link America/Port_of_Spain America/Marigot # St Martin (French part) 1636Link America/Port_of_Spain America/Montserrat 1637Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy 1638Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis 1639Link America/Port_of_Spain America/St_Lucia 1640Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) 1641Link America/Port_of_Spain America/St_Vincent 1642Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) 1643 1644# Uruguay 1645# From Paul Eggert (1993-11-18): 1646# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1647# From Shanks & Pottenger: 1648# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1649# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1650Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1651Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1652Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1653Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1654# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1655Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1656Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1657Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1658# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1659Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1660# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1661# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger. 1662Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1663Rule Uruguay 1942 only - Jan 1 0:00 0 - 1664Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1665Rule Uruguay 1943 only - Mar 14 0:00 0 - 1666Rule Uruguay 1959 only - May 24 0:00 1:00 S 1667Rule Uruguay 1959 only - Nov 15 0:00 0 - 1668Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1669Rule Uruguay 1960 only - Mar 6 0:00 0 - 1670Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1671Rule Uruguay 1965 only - Sep 26 0:00 0 - 1672Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1673Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1674Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1675Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1676Rule Uruguay 1972 only - Aug 15 0:00 0 - 1677Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1678Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1679Rule Uruguay 1976 only - Oct 1 0:00 0 - 1680Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1681Rule Uruguay 1978 only - Apr 1 0:00 0 - 1682Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1683Rule Uruguay 1980 only - May 1 0:00 0 - 1684Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1685Rule Uruguay 1988 only - Mar 14 0:00 0 - 1686Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1687Rule Uruguay 1989 only - Mar 12 0:00 0 - 1688Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1689# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1690# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1691Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1692Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1693Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1694Rule Uruguay 1993 only - Feb 28 0:00 0 - 1695# From Eduardo Cota (2004-09-20): 1696# The Uruguayan government has decreed a change in the local time.... 1697# http://www.presidencia.gub.uy/decretos/2004091502.htm 1698Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1699# From Steffen Thorsen (2005-03-11): 1700# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1701# save energy ... it was postponed two weeks.... 1702# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1703Rule Uruguay 2005 only - Mar 27 2:00 0 - 1704# From Eduardo Cota (2005-09-27): 1705# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1706# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1707# 02:00 local time, official time in Uruguay will be at GMT -2. 1708Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1709Rule Uruguay 2006 only - Mar 12 2:00 0 - 1710# From Jesper Nørgaard Welen (2006-09-06): 1711# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1712# 1713# From Steffen Thorsen (2015-06-30): 1714# ... it looks like they will not be using DST the coming summer: 1715# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 1716# http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ 1717# From Paul Eggert (2015-06-30): 1718# Apparently restaurateurs complained that DST caused people to go to the beach 1719# instead of out to dinner. 1720# From Pablo Camargo (2015-07-13): 1721# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf 1722# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04] 1723Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S 1724Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 - 1725# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1726Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1727 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1728 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1729 -3:00 Uruguay UY%sT 1730 1731# Venezuela 1732# 1733# From Paul Eggert (2015-07-28): 1734# For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 1735# http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf 1736# 1737# From John Stainforth (2007-11-28): 1738# ... the change for Venezuela originally expected for 2007-12-31 has 1739# been brought forward to 2007-12-09. The official announcement was 1740# published today in the "Gaceta Oficial de la República Bolivariana 1741# de Venezuela, número 38.819" (official document for all laws or 1742# resolution publication) 1743# http://www.globovision.com/news.php?nid=72208 1744 1745# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1746Zone America/Caracas -4:27:44 - LMT 1890 1747 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1748 -4:30 - VET 1965 Jan 1 0:00 # Venezuela T. 1749 -4:00 - VET 2007 Dec 9 3:00 1750 -4:30 - VET 1751
