southamerica revision 226784
1153761Swollman# <pre> 2226784Sedwin# @(#)southamerica 8.52 3192886Sedwin# This file is in the public domain, so clarified as of 4192886Sedwin# 2009-05-17 by Arthur David Olson. 564499Swollman 62742Swollman# This data is by no means authoritative; if you think you know better, 72742Swollman# go ahead and edit the file (and please send any changes to 82742Swollman# tz@elsie.nci.nih.gov for general use in the future). 92742Swollman 10158421Swollman# From Paul Eggert (2006-03-22): 112742Swollman# A good source for time zone historical data outside the U.S. is 12158421Swollman# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13158421Swollman# San Diego: ACS Publications, Inc. (2003). 142742Swollman# 1586222Swollman# Gwillim Law writes that a good source 1620094Swollman# for recent time zone data is the International Air Transport 1720094Swollman# Association's Standard Schedules Information Manual (IATA SSIM), 1820094Swollman# published semiannually. Law sent in several helpful summaries 1920094Swollman# of the IATA's data after 1990. 2020094Swollman# 21158421Swollman# Except where otherwise noted, Shanks & Pottenger is the source for 22158421Swollman# entries through 1990, and IATA SSIM is the source for entries afterwards. 2320094Swollman# 2419878Swollman# Earlier editions of these tables used the North American style (e.g. ARST and 2519878Swollman# ARDT for Argentine Standard and Daylight Time), but the following quote 2619878Swollman# suggests that it's better to use European style (e.g. ART and ARST). 2719878Swollman# I suggest the use of _Summer time_ instead of the more cumbersome 2819878Swollman# _daylight-saving time_. _Summer time_ seems to be in general use 2919878Swollman# in Europe and South America. 3019878Swollman# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 3119878Swollman# H L Mencken, _The American Language: Supplement I_ (1960), p 466 3258787Sru# 3358787Sru# Earlier editions of these tables also used the North American style 3458787Sru# for time zones in Brazil, but this was incorrect, as Brazilians say 3558787Sru# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 3658787Sru# the railroad sector, writes (1999-07-06): 3758787Sru# The subject of time zones is currently a matter of discussion/debate in 3858787Sru# Brazil. Let's say that "the Brasilia time" is considered the 3958787Sru# "official time" because Brasilia is the capital city. 4058787Sru# The other three time zones are called "Brasilia time "minus one" or 4158787Sru# "plus one" or "plus two". As far as I know there is no such 4258787Sru# name/designation as "Eastern Time" or "Central Time". 4358787Sru# So I invented the following (English-language) abbreviations for now. 4458787Sru# Corrections are welcome! 4558787Sru# std dst 4658787Sru# -2:00 FNT FNST Fernando de Noronha 4758787Sru# -3:00 BRT BRST Brasilia 4858787Sru# -4:00 AMT AMST Amazon 4958787Sru# -5:00 ACT ACST Acre 502742Swollman 512742Swollman############################################################################### 522742Swollman 532742Swollman############################################################################### 542742Swollman 552742Swollman# Argentina 562742Swollman 5719878Swollman# From Bob Devine (1988-01-28): 582742Swollman# Argentina: first Sunday in October to first Sunday in April since 1976. 592742Swollman# Double Summer time from 1969 to 1974. Switches at midnight. 602742Swollman 6119878Swollman# From U. S. Naval Observatory (1988-01-199): 622742Swollman# ARGENTINA 3 H BEHIND UTC 632742Swollman 64149514Swollman# From Hernan G. Otero (1995-06-26): 6521217Swollman# I am sending modifications to the Argentine time zone table... 669908Swollman# AR was chosen because they are the ISO letters that represent Argentina. 679908Swollman 682742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 6919878SwollmanRule Arg 1930 only - Dec 1 0:00 1:00 S 7019878SwollmanRule Arg 1931 only - Apr 1 0:00 0 - 7119878SwollmanRule Arg 1931 only - Oct 15 0:00 1:00 S 7219878SwollmanRule Arg 1932 1940 - Mar 1 0:00 0 - 7319878SwollmanRule Arg 1932 1939 - Nov 1 0:00 1:00 S 7419878SwollmanRule Arg 1940 only - Jul 1 0:00 1:00 S 7519878SwollmanRule Arg 1941 only - Jun 15 0:00 0 - 7619878SwollmanRule Arg 1941 only - Oct 15 0:00 1:00 S 7719878SwollmanRule Arg 1943 only - Aug 1 0:00 0 - 7819878SwollmanRule Arg 1943 only - Oct 15 0:00 1:00 S 7919878SwollmanRule Arg 1946 only - Mar 1 0:00 0 - 8019878SwollmanRule Arg 1946 only - Oct 1 0:00 1:00 S 8119878SwollmanRule Arg 1963 only - Oct 1 0:00 0 - 8219878SwollmanRule Arg 1963 only - Dec 15 0:00 1:00 S 8319878SwollmanRule Arg 1964 1966 - Mar 1 0:00 0 - 8419878SwollmanRule Arg 1964 1966 - Oct 15 0:00 1:00 S 8593799SwollmanRule Arg 1967 only - Apr 2 0:00 0 - 8658787SruRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 8758787SruRule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 8819878SwollmanRule Arg 1974 only - Jan 23 0:00 1:00 S 8919878SwollmanRule Arg 1974 only - May 1 0:00 0 - 9019878SwollmanRule Arg 1988 only - Dec 1 0:00 1:00 S 919908Swollman# 92149514Swollman# From Hernan G. Otero (1995-06-26): 939908Swollman# These corrections were contributed by InterSoft Argentina S.A., 949908Swollman# obtaining the data from the: 959908Swollman# Talleres de Hidrografia Naval Argentina 9621217Swollman# (Argentine Naval Hydrography Institute) 9719878SwollmanRule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 9819878SwollmanRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 999908Swollman# 100149514Swollman# From Hernan G. Otero (1995-06-26): 1019908Swollman# From this moment on, the law that mandated the daylight saving 1029908Swollman# time corrections was derogated and no more modifications 1039908Swollman# to the time zones (for daylight saving) are now made. 1049908Swollman# 10558787Sru# From Rives McDow (2000-01-10): 10658787Sru# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 10758787Sru# which did not result in the switch of a time zone, as they stayed 9 hours 10864499Swollman# from the International Date Line. 10964499SwollmanRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 110175034Sedwin# From Paul Eggert (2007-12-28): 111175034Sedwin# DST was set to expire on March 5, not March 3, but since it was converted 112175034Sedwin# to standard time on March 3 it's more convenient for us to pretend that 113175034Sedwin# it ended on March 3. 114175034SedwinRule Arg 2000 only - Mar 3 0:00 0 - 11558787Sru# 11658787Sru# From Peter Gradelski via Steffen Thorsen (2000-03-01): 11767578Swollman# We just checked with our Sao Paulo office and they say the government of 11858787Sru# Argentina decided not to become one of the countries that go on or off DST. 11958787Sru# So Buenos Aires should be -3 hours from GMT at all times. 12058787Sru# 121149514Swollman# From Fabian L. Arce Jofre (2000-04-04): 12264499Swollman# The law that claimed DST for Argentina was derogated by President Fernando 12364499Swollman# de la Rua on March 2, 2000, because it would make people spend more energy 12464499Swollman# in the winter time, rather than less. The change took effect on March 3. 12564499Swollman# 12686222Swollman# From Mariano Absatz (2001-06-06): 12786222Swollman# one of the major newspapers here in Argentina said that the 1999 12886222Swollman# Timezone Law (which never was effectively applied) will (would?) be 12986222Swollman# in effect.... The article is at 13086222Swollman# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 13186222Swollman# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 13286222Swollman# 1999-09-17, and published 1999-09-21. The official publication is at: 13386222Swollman# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 13486222Swollman# Regretfully, you have to subscribe (and pay) for the on-line version.... 13586222Swollman# 13686222Swollman# (2001-06-12): 13786222Swollman# the timezone for Argentina will not change next Sunday. 13886222Swollman# Apparently it will do so on Sunday 24th.... 13986222Swollman# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 14086222Swollman# 14186222Swollman# (2001-06-25): 14286222Swollman# Last Friday (yes, the last working day before the date of the change), the 14386222Swollman# Senate annulled the 1999 law that introduced the changes later postponed. 14486222Swollman# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 14586222Swollman# It remains the vote of the Deputies..., but it will be the same.... 14686222Swollman# This kind of things had always been done this way in Argentina. 14786222Swollman# We are still -03:00 all year round in all of the country. 14886222Swollman# 149175034Sedwin# From Steffen Thorsen (2007-12-21): 150175034Sedwin# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 151175034Sedwin# all of the country (all Zone-entries) are affected. News reports like 152175034Sedwin# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 153175034Sedwin# that Argentina will use DST next year as well, from October to 154175034Sedwin# March, although exact rules are not given. 155175034Sedwin# 156175034Sedwin# From Jesper Norgaard Welen (2007-12-26) 157175034Sedwin# The last hurdle of Argentina DST is over, the proposal was approved in 158175034Sedwin# the lower chamber too (Deputados) with a vote 192 for and 2 against. 159175034Sedwin# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 160175034Sedwin# the original scanned proposal, where the dates and the zero hours are 161175034Sedwin# clear and unambiguous...This is the article about final approval: 162175034Sedwin# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 163175034Sedwin# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 164175034Sedwin# </a> 165175034Sedwin# 166175034Sedwin# From Paul Eggert (2007-12-22): 167175034Sedwin# For dates after mid-2008, the following rules are my guesses and 168175034Sedwin# are quite possibly wrong, but are more likely than no DST at all. 169183066Sedwin 170183066Sedwin# From Alexander Krivenyshev (2008-09-05): 171183066Sedwin# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 172183066Sedwin# Argentina will start DST on Sunday October 19, 2008. 173183066Sedwin# 174183066Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 175183066Sedwin# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176183066Sedwin# </a> 177183066Sedwin# OR 178183066Sedwin# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 179183066Sedwin# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 180183066Sedwin# </a> 181183066Sedwin 182183864Sedwin# From Rodrigo Severo (2008-10-06): 183183864Sedwin# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 184183864Sedwin# ... 185183864Sedwin# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 186183864Sedwin# Hi, there is a problem with timezone-data-2008e and maybe with 187183864Sedwin# timezone-data-2008f 188183864Sedwin# Argentinian law [Number] 25.155 is no longer valid. 189183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 190183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 191183864Sedwin# </a> 192183864Sedwin# The new one is law [Number] 26.350 193183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 194183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 195183864Sedwin# </a> 196183864Sedwin# So there is no summer time in Argentina for now. 197183864Sedwin 198184406Sedwin# From Mariano Absatz (2008-10-20): 199184406Sedwin# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 200184406Sedwin# From 2008-10-19 until 2009-03-15 201184406Sedwin# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 202184406Sedwin# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 203184406Sedwin# </a> 204184406Sedwin# 205184406Sedwin# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 206184406Sedwin# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 207184406Sedwin# and Tierra del Fuego 208184406Sedwin# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 209184406Sedwin# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 210184406Sedwin# </a> 211184406Sedwin# 212184406Sedwin# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 213184406Sedwin# it will not apply DST either (even when it was not included in Decree 1705/2008) 214184406Sedwin# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 215184406Sedwin# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 216184406Sedwin# </a> 217184406Sedwin 218198515Sedwin# From fullinet (2009-10-18): 219198515Sedwin# As announced in 220198515Sedwin# <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> 221198515Sedwin# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 222198515Sedwin# </a> 223198515Sedwin# (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") 224198515Sedwin# 225198515Sedwin# "Por el momento, el Gobierno Nacional resolvio no modificar la hora 226198515Sedwin# oficial, decision que estaba en estudio para su implementacion el 227198515Sedwin# domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio 228198515Sedwin# que la Argentina hoy, en estas condiciones meteorologicas, no necesita 229198515Sedwin# la modificacion del huso horario, ya que 2009 nos encuentra con 230198515Sedwin# crecimiento en la produccion y distribucion energetica." 231198515Sedwin 232175034SedwinRule Arg 2007 only - Dec 30 0:00 1:00 S 233198515SedwinRule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 234198515SedwinRule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 235175034Sedwin 236136638Swollman# From Mariano Absatz (2004-05-21): 237136638Swollman# Today it was officially published that the Province of Mendoza is changing 238136638Swollman# its timezone this winter... starting tomorrow night.... 239136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 240136638Swollman# From Paul Eggert (2004-05-24): 241136638Swollman# It's Law No. 7,210. This change is due to a public power emergency, so for 242136638Swollman# now we'll assume it's for this year only. 24393799Swollman# 244158421Swollman# From Paul Eggert (2006-03-22): 24593799Swollman# <a href="http://www.spicasc.net/horvera.html"> 246158421Swollman# Hora de verano para la Republica Argentina (2003-06-08) 24793799Swollman# </a> says that standard time in Argentina from 1894-10-31 24893799Swollman# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 249158421Swollman# over Shanks & Pottenger. 250136638Swollman# 251136638Swollman# From Mariano Absatz (2004-06-05): 252136638Swollman# These media articles from a major newspaper mostly cover the current state: 253136638Swollman# http://www.lanacion.com.ar/04/05/27/de_604825.asp 254136638Swollman# http://www.lanacion.com.ar/04/05/28/de_605203.asp 255136638Swollman# 256136638Swollman# The following eight (8) provinces pulled clocks back to UTC-04:00 at 257136638Swollman# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 258136638Swollman# Apparently, all nine provinces would go back to UTC-03:00 at the same 259136638Swollman# time in October 17th. 260136638Swollman# 261136638Swollman# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 262136638Swollman# Tierra del Fuego, Tucuman. 263136638Swollman# 264136638Swollman# From Mariano Absatz (2004-06-14): 265136638Swollman# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 266136638Swollman# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 267136638Swollman# annoyance with the change is much higher than the power savings obtained.... 268136638Swollman# 269136638Swollman# From Gwillim Law (2004-06-14): 270136638Swollman# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 271136638Swollman# "The time change in Tierra del Fuego was a conflicted decision from 272136638Swollman# the start. The government had decreed that the measure would take 273136638Swollman# effect on June 1, but a normative error forced the new time to begin 274136638Swollman# three days earlier, from a Saturday to a Sunday.... 275136638Swollman# Our understanding was that the change was originally scheduled to take place 276136638Swollman# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 277136638Swollman# provinces). Sunday was May 30, only two days earlier. So the article 278136638Swollman# contains a contradiction. I would give more credence to the Saturday/Sunday 279136638Swollman# date than the "three days earlier" phrase, and conclude that Tierra del 280136638Swollman# Fuego set its clocks back at 2004-05-30 00:00. 281136638Swollman# 282136638Swollman# From Steffen Thorsen (2004-10-05): 283136638Swollman# The previous law 7210 which changed the province of Mendoza's time zone 284136638Swollman# back in May have been modified slightly in a new law 7277, which set the 285136638Swollman# new end date to 2004-09-26 (original date was 2004-10-17). 286136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 287136638Swollman# 288136638Swollman# From Mariano Absatz (2004-10-05): 289136638Swollman# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 290136638Swollman# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 291136638Swollman# at midnight between Saturday, July 24th and Sunday, July 25th.... 292136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 293136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 294136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 29593799Swollman 296177591Sedwin# From Alex Krivenyshev (2008-01-17): 297177591Sedwin# Here are articles that Argentina Province San Luis is planning to end DST 298177591Sedwin# as earlier as upcoming Monday January 21, 2008 or February 2008: 299177591Sedwin# 300177591Sedwin# Provincia argentina retrasa reloj y marca diferencia con resto del pais 301177591Sedwin# (Argentine Province delayed clock and mark difference with the rest of the 302177591Sedwin# country) 303177591Sedwin# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 304177591Sedwin# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 305177591Sedwin# </a> 306177591Sedwin# 307177591Sedwin# Es inminente que en San Luis atrasen una hora los relojes 308177591Sedwin# (It is imminent in San Luis clocks one hour delay) 309177591Sedwin# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 310177591Sedwin# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 311177591Sedwin# </a> 312177591Sedwin# 313177591Sedwin# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 314177591Sedwin# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 315177591Sedwin# </a> 316177591Sedwin 317177591Sedwin# From Jesper Norgaard Welen (2008-01-18): 318177591Sedwin# The page of the San Luis provincial government 319177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 320177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 321177591Sedwin# </a> 322177591Sedwin# confirms what Alex Krivenyshev has earlier sent to the tz 323177591Sedwin# emailing list about that San Luis plans to return to standard 324177591Sedwin# time much earlier than the rest of the country. It also 325177591Sedwin# confirms that upon request the provinces San Juan and Mendoza 326177591Sedwin# refused to follow San Luis in this change. 327177591Sedwin# 328177591Sedwin# The change is supposed to take place Monday the 21.st at 0:00 329177591Sedwin# hours. As far as I understand it if this goes ahead, we need 330177591Sedwin# a new timezone for San Luis (although there are also documented 331177591Sedwin# independent changes in the southamerica file of San Luis in 332177591Sedwin# 1990 and 1991 which has not been confirmed). 333177591Sedwin 334177591Sedwin# From Jesper Norgaard Welen (2008-01-25): 335177591Sedwin# Unfortunately the below page has become defunct, about the San Luis 336177591Sedwin# time change. Perhaps because it now is part of a group of pages "Most 337177591Sedwin# important pages of 2008." 338177591Sedwin# 339177591Sedwin# You can use 340177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 341177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 342177591Sedwin# </a> 343177591Sedwin# instead it seems. Or use "Buscador" from the main page of the San Luis 344177591Sedwin# government, and fill in "huso" and click OK, and you will get 3 pages 345177591Sedwin# from which the first one is identical to the above. 346177591Sedwin 347177591Sedwin# From Mariano Absatz (2008-01-28): 348177591Sedwin# I can confirm that the Province of San Luis (and so far only that 349177591Sedwin# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 350177591Sedwin# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 351177591Sedwin# 1 hour), and they intend to keep UTC-3 as their timezone all year round 352177591Sedwin# (that is, unless they change their mind any minute now). 353177591Sedwin# 354177591Sedwin# So we'll have to add yet another city to 'southamerica' (I think San 355177591Sedwin# Luis city is the mos populated city in the Province, so it'd be 356177591Sedwin# America/Argentina/San_Luis... of course I can't remember if San Luis's 357177591Sedwin# history of particular changes goes along with Mendoza or San Juan :-( 358177591Sedwin# (I only remember not being able to collect hard facts about San Luis 359177591Sedwin# back in 2004, when these provinces changed to UTC-4 for a few days, I 360177591Sedwin# mailed them personally and never got an answer). 361177591Sedwin 362181421Sedwin# From Paul Eggert (2008-06-30): 363158421Swollman# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 364158421Swollman# from the IATA otherwise. As noted below, Shanks & Pottenger say that 365181421Sedwin# America/Cordoba split into 6 subregions during 1991/1992, one of which 366181421Sedwin# was America/San_Luis, but we haven't verified this yet so for now we'll 367181421Sedwin# keep America/Cordoba a single region rather than splitting it into the 368181421Sedwin# other 5 subregions. 369181421Sedwin 370190372Sedwin# From Mariano Absatz (2009-03-13): 371190372Sedwin# Yesterday (with our usual 2-day notice) the Province of San Luis 372190372Sedwin# decided that next Sunday instead of "staying" @utc-03:00 they will go 373190372Sedwin# to utc-04:00 until the second Saturday in October... 37493799Swollman# 375190372Sedwin# The press release is at 376190372Sedwin# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 377190372Sedwin# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 378190372Sedwin# </a> 379190372Sedwin# (I couldn't find the decree, but 380190372Sedwin# <a href="http://www.sanluis.gov.ar"> 381190372Sedwin# www.sanluis.gov.ar 382190372Sedwin# <a/> 383190372Sedwin# is the official page for the Province Government). 384190372Sedwin# 385190372Sedwin# There's also a note in only one of the major national papers (La Naci�n) at 386190372Sedwin# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 387190372Sedwin# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 388190372Sedwin# </a> 389190372Sedwin# 390190372Sedwin# The press release says: 391190372Sedwin# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 392190372Sedwin# atrasar una hora sus relojes. 393190372Sedwin# 394190372Sedwin# A partir de entonces, San Luis establecer� el huso horario propio de 395190372Sedwin# la Provincia. De esta manera, durante el periodo del calendario anual 396190372Sedwin# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 397190372Sedwin# domingo de marzo y las 24:00 del segundo s�bado de octubre. 398190372Sedwin# Quick&dirty translation 399190372Sedwin# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 400190372Sedwin# inhabitants) will have to turn back one hour their clocks 401190372Sedwin# 402190372Sedwin# Since then, San Luis will establish its own Province timezone. Thus, 403190372Sedwin# during 2009, this timezone change will run from 00:00 the third Sunday 404190372Sedwin# in March until 24:00 of the second Saturday in October. 405190372Sedwin 406198515Sedwin# From Mariano Absatz (2009-10-16): 407198515Sedwin# ...the Province of San Luis is a case in itself. 408190372Sedwin# 409198515Sedwin# The Law at 410198515Sedwin# <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" 411198515Sedwin# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 412197597Sedwin# </a> 413198515Sedwin# is ambiguous because establishes a calendar from the 2nd Sunday in 414198515Sedwin# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 415198515Sedwin# complement of that starting on the 2nd Sunday of March at 0:00 and 416198515Sedwin# ending on the 2nd Saturday of March at 24:00. 417197597Sedwin# 418198515Sedwin# This clearly breaks every time the 1st of March or October is a Sunday. 419197597Sedwin# 420198515Sedwin# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 421198515Sedwin# Sunday of October and March. 422198515Sedwin# 423198515Sedwin# The problem is that the changes in the rest of the Provinces that did 424198515Sedwin# change in 2007/2008, were made according to the Federal Law and Decrees 425198515Sedwin# that did so on the 3rd Sunday of October and March. 426198515Sedwin# 427198515Sedwin# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 428198515Sedwin# (October 11th) at 0:00. 429198515Sedwin# 430198515Sedwin# So I guess a new set of rules, besides "Arg", must be made and the last 431198515Sedwin# America/Argentina/San_Luis entries should change to use these... 432198515Sedwin# 433198515Sedwin# I'm enclosing a patch that does what I say... regretfully, the San Luis 434198515Sedwin# timezone must be called "WART/WARST" even when most of the time (like, 435198515Sedwin# right now) WARST == ART... that is, since last Sunday, all the country 436198515Sedwin# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 437198515Sedwin# of the country calls it "ART". 438198515Sedwin# ... 439197597Sedwin 440206868Sedwin# From Alexander Krivenyshev (2010-04-09): 441206868Sedwin# According to news reports from El Diario de la Republica Province San 442206868Sedwin# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 443206868Sedwin# after April 11, 2010--will continue to have same time as rest of 444206868Sedwin# Argentina (UTC-3) (no DST). 445206868Sedwin# 446206868Sedwin# Confirmaron la prórroga del huso horario de verano (Spanish) 447206868Sedwin# <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> 448206868Sedwin# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 449206868Sedwin# </a> 450206868Sedwin# or (some English translation): 451206868Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> 452206868Sedwin# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 453206868Sedwin# </a> 454206868Sedwin 455206868Sedwin# From Mariano Absatz (2010-04-12): 456206868Sedwin# yes...I can confirm this...and given that San Luis keeps calling 457206868Sedwin# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 458206868Sedwin# rules...San Luis is still using "Western ARgentina Time" and it got 459206868Sedwin# stuck on Summer daylight savings time even though the summer is over. 460206868Sedwin 4612742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 46220094Swollman# 463136638Swollman# Buenos Aires (BA), Capital Federal (CF), 464136638SwollmanZone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 46593799Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 46619878Swollman -4:00 - ART 1930 Dec 46758787Sru -4:00 Arg AR%sT 1969 Oct 5 46893799Swollman -3:00 Arg AR%sT 1999 Oct 3 46993799Swollman -4:00 Arg AR%sT 2000 Mar 3 470175034Sedwin -3:00 Arg AR%sT 47120094Swollman# 472184406Sedwin# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 473184406Sedwin# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 47420094Swollman# 475158421Swollman# Shanks & Pottenger also make the following claims, which we haven't verified: 47693799Swollman# - Formosa switched to -3:00 on 1991-01-07. 47793799Swollman# - Misiones switched to -3:00 on 1990-12-29. 47893799Swollman# - Chaco switched to -3:00 on 1991-01-04. 47993799Swollman# - Santiago del Estero switched to -4:00 on 1991-04-01, 48093799Swollman# then to -3:00 on 1991-04-26. 48193799Swollman# 482136638SwollmanZone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 48393799Swollman -4:16:48 - CMT 1920 May 48420094Swollman -4:00 - ART 1930 Dec 48558787Sru -4:00 Arg AR%sT 1969 Oct 5 48693799Swollman -3:00 Arg AR%sT 1991 Mar 3 48793799Swollman -4:00 - WART 1991 Oct 20 48893799Swollman -3:00 Arg AR%sT 1999 Oct 3 48993799Swollman -4:00 Arg AR%sT 2000 Mar 3 490175034Sedwin -3:00 Arg AR%sT 49120094Swollman# 492184406Sedwin# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 493184406SedwinZone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 494184406Sedwin -4:16:48 - CMT 1920 May 495184406Sedwin -4:00 - ART 1930 Dec 496184406Sedwin -4:00 Arg AR%sT 1969 Oct 5 497184406Sedwin -3:00 Arg AR%sT 1991 Mar 3 498184406Sedwin -4:00 - WART 1991 Oct 20 499184406Sedwin -3:00 Arg AR%sT 1999 Oct 3 500184406Sedwin -4:00 Arg AR%sT 2000 Mar 3 501184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 502184406Sedwin -3:00 - ART 503184406Sedwin# 504136638Swollman# Tucuman (TM) 505136638SwollmanZone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 506136638Swollman -4:16:48 - CMT 1920 May 507136638Swollman -4:00 - ART 1930 Dec 508136638Swollman -4:00 Arg AR%sT 1969 Oct 5 509136638Swollman -3:00 Arg AR%sT 1991 Mar 3 510136638Swollman -4:00 - WART 1991 Oct 20 511136638Swollman -3:00 Arg AR%sT 1999 Oct 3 512136638Swollman -4:00 Arg AR%sT 2000 Mar 3 513136638Swollman -3:00 - ART 2004 Jun 1 514136638Swollman -4:00 - WART 2004 Jun 13 515175034Sedwin -3:00 Arg AR%sT 516136638Swollman# 517136638Swollman# La Rioja (LR) 518136638SwollmanZone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 519136638Swollman -4:16:48 - CMT 1920 May 520136638Swollman -4:00 - ART 1930 Dec 521136638Swollman -4:00 Arg AR%sT 1969 Oct 5 522136638Swollman -3:00 Arg AR%sT 1991 Mar 1 523136638Swollman -4:00 - WART 1991 May 7 524136638Swollman -3:00 Arg AR%sT 1999 Oct 3 525136638Swollman -4:00 Arg AR%sT 2000 Mar 3 526136638Swollman -3:00 - ART 2004 Jun 1 527136638Swollman -4:00 - WART 2004 Jun 20 528184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 529184406Sedwin -3:00 - ART 530136638Swollman# 531136638Swollman# San Juan (SJ) 532136638SwollmanZone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 533136638Swollman -4:16:48 - CMT 1920 May 534136638Swollman -4:00 - ART 1930 Dec 535136638Swollman -4:00 Arg AR%sT 1969 Oct 5 536136638Swollman -3:00 Arg AR%sT 1991 Mar 1 537136638Swollman -4:00 - WART 1991 May 7 538136638Swollman -3:00 Arg AR%sT 1999 Oct 3 539136638Swollman -4:00 Arg AR%sT 2000 Mar 3 540136638Swollman -3:00 - ART 2004 May 31 541136638Swollman -4:00 - WART 2004 Jul 25 542184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 543184406Sedwin -3:00 - ART 544136638Swollman# 54520094Swollman# Jujuy (JY) 546136638SwollmanZone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 54793799Swollman -4:16:48 - CMT 1920 May 54820094Swollman -4:00 - ART 1930 Dec 54920094Swollman -4:00 Arg AR%sT 1969 Oct 5 55093799Swollman -3:00 Arg AR%sT 1990 Mar 4 55193799Swollman -4:00 - WART 1990 Oct 28 55293799Swollman -4:00 1:00 WARST 1991 Mar 17 55320094Swollman -4:00 - WART 1991 Oct 6 55493799Swollman -3:00 1:00 ARST 1992 55593799Swollman -3:00 Arg AR%sT 1999 Oct 3 55693799Swollman -4:00 Arg AR%sT 2000 Mar 3 557184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 558184406Sedwin -3:00 - ART 55920094Swollman# 560149514Swollman# Catamarca (CT), Chubut (CH) 561136638SwollmanZone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 56293799Swollman -4:16:48 - CMT 1920 May 56320094Swollman -4:00 - ART 1930 Dec 56458787Sru -4:00 Arg AR%sT 1969 Oct 5 56593799Swollman -3:00 Arg AR%sT 1991 Mar 3 56693799Swollman -4:00 - WART 1991 Oct 20 56793799Swollman -3:00 Arg AR%sT 1999 Oct 3 56893799Swollman -4:00 Arg AR%sT 2000 Mar 3 569136638Swollman -3:00 - ART 2004 Jun 1 570136638Swollman -4:00 - WART 2004 Jun 20 571184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 572184406Sedwin -3:00 - ART 57320094Swollman# 57420094Swollman# Mendoza (MZ) 575136638SwollmanZone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 57693799Swollman -4:16:48 - CMT 1920 May 57720094Swollman -4:00 - ART 1930 Dec 57820094Swollman -4:00 Arg AR%sT 1969 Oct 5 57993799Swollman -3:00 Arg AR%sT 1990 Mar 4 58093799Swollman -4:00 - WART 1990 Oct 15 58193799Swollman -4:00 1:00 WARST 1991 Mar 1 58220094Swollman -4:00 - WART 1991 Oct 15 58320094Swollman -4:00 1:00 WARST 1992 Mar 1 58420094Swollman -4:00 - WART 1992 Oct 18 58593799Swollman -3:00 Arg AR%sT 1999 Oct 3 58693799Swollman -4:00 Arg AR%sT 2000 Mar 3 587136638Swollman -3:00 - ART 2004 May 23 588136638Swollman -4:00 - WART 2004 Sep 26 589184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 590184406Sedwin -3:00 - ART 591136638Swollman# 592177591Sedwin# San Luis (SL) 593198515Sedwin 594206868SedwinRule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 595206868SedwinRule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S 596198515Sedwin 597177591SedwinZone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 598177591Sedwin -4:16:48 - CMT 1920 May 599177591Sedwin -4:00 - ART 1930 Dec 600177591Sedwin -4:00 Arg AR%sT 1969 Oct 5 601181421Sedwin -3:00 Arg AR%sT 1990 602181421Sedwin -3:00 1:00 ARST 1990 Mar 14 603181421Sedwin -4:00 - WART 1990 Oct 15 604181421Sedwin -4:00 1:00 WARST 1991 Mar 1 605181421Sedwin -4:00 - WART 1991 Jun 1 606181421Sedwin -3:00 - ART 1999 Oct 3 607181421Sedwin -4:00 1:00 WARST 2000 Mar 3 608177591Sedwin -3:00 - ART 2004 May 31 609177591Sedwin -4:00 - WART 2004 Jul 25 610177591Sedwin -3:00 Arg AR%sT 2008 Jan 21 611198515Sedwin -4:00 SanLuis WAR%sT 612177591Sedwin# 613136638Swollman# Santa Cruz (SC) 614136638SwollmanZone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 615136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 616136638Swollman -4:00 - ART 1930 Dec 617136638Swollman -4:00 Arg AR%sT 1969 Oct 5 618136638Swollman -3:00 Arg AR%sT 1999 Oct 3 619136638Swollman -4:00 Arg AR%sT 2000 Mar 3 620136638Swollman -3:00 - ART 2004 Jun 1 621136638Swollman -4:00 - WART 2004 Jun 20 622184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 623184406Sedwin -3:00 - ART 624136638Swollman# 625136638Swollman# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 626136638SwollmanZone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 627136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 628136638Swollman -4:00 - ART 1930 Dec 629136638Swollman -4:00 Arg AR%sT 1969 Oct 5 630136638Swollman -3:00 Arg AR%sT 1999 Oct 3 631136638Swollman -4:00 Arg AR%sT 2000 Mar 3 632136638Swollman -3:00 - ART 2004 May 30 633136638Swollman -4:00 - WART 2004 Jun 20 634184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 635184406Sedwin -3:00 - ART 6368029Swollman 63714343Swollman# Aruba 63814343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 63914343SwollmanZone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 64019878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 64114343Swollman -4:00 - AST 64214343Swollman 6432742Swollman# Bolivia 6442742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 6452742SwollmanZone America/La_Paz -4:32:36 - LMT 1890 64686222Swollman -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 64719878Swollman -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 64819878Swollman -4:00 - BOT # Bolivia Time 6492742Swollman 6502742Swollman# Brazil 6512742Swollman 652149514Swollman# From Paul Eggert (1993-11-18): 6532742Swollman# The mayor of Rio recently attempted to change the time zone rules 6542742Swollman# just in his city, in order to leave more summer time for the tourist trade. 6552742Swollman# The rule change lasted only part of the day; 6562742Swollman# the federal government refused to follow the city's rules, and business 6572742Swollman# was in a chaos, so the mayor backed down that afternoon. 6582742Swollman 65920094Swollman# From IATA SSIM (1996-02): 66020094Swollman# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 66120094Swollman# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 66220094Swollman# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 66320094Swollman# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 66420094Swollman# [The last three states are new to this issue of the IATA SSIM.] 66520094Swollman 66620094Swollman# From Gwillim Law (1996-10-07): 66720094Swollman# Geography, history (Tocantins was part of Goias until 1989), and other 66820094Swollman# sources of time zone information lead me to believe that AL, SE, and TO were 66920094Swollman# always in BR1, and so the only change was whether or not they observed DST.... 67020094Swollman# The earliest issue of the SSIM I have is 2/91. Each issue from then until 67120094Swollman# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 67220094Swollman# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 67320094Swollman# (UTC-4).... The other two time zones given for Brazil are BR3, which is 67420094Swollman# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 67520094Swollman# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 67620094Swollman# become part of the state of Pernambuco). The boundary between BR1 and BR2 67720094Swollman# has never been clearly stated. They've simply been called East and West. 67820094Swollman# However, some conclusions can be drawn from another IATA manual: the Airline 67920094Swollman# Coding Directory, which lists close to 400 airports in Brazil. For each 68020094Swollman# airport it gives a time zone which is coded to the SSIM. From that 68120094Swollman# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 68220094Swollman# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 68320094Swollman# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 68420094Swollman 68543014Swollman# From Marcos Tadeu (1998-09-27): 68643014Swollman# <a href="http://pcdsh01.on.br/verao1.html"> 68743014Swollman# Brazilian official page 68843014Swollman# </a> 68975267Swollman 69075267Swollman# From Jesper Norgaard (2000-11-03): 69175267Swollman# [For an official list of which regions in Brazil use which time zones, see:] 69275267Swollman# http://pcdsh01.on.br/Fusbr.htm 69375267Swollman# http://pcdsh01.on.br/Fusbrhv.htm 69475267Swollman 695105196Swollman# From Celso Doria via David Madeo (2002-10-09): 696105196Swollman# The reason for the delay this year has to do with elections in Brazil. 697105196Swollman# 698105196Swollman# Unlike in the United States, elections in Brazil are 100% computerized and 699105196Swollman# the results are known almost immediately. Yesterday, it was the first 700105196Swollman# round of the elections when 115 million Brazilians voted for President, 701105196Swollman# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 702105196Swollman# counting (or re-counting) votes anymore and we know there will be a second 703105196Swollman# round for the Presidency and also for some Governors. The 2nd round will 704105196Swollman# take place on October 27th. 705105196Swollman# 706105196Swollman# The reason why the DST will only begin November 3rd is that the thousands 707105196Swollman# of electoral machines used cannot have their time changed, and since the 708105196Swollman# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 709105196Swollman# the Government decided to postpone DST, instead of changing the Constitution 710105196Swollman# (maybe, for the next elections, it will be possible to change the clock)... 711105196Swollman 712136638Swollman# From Rodrigo Severo (2004-10-04): 713136638Swollman# It's just the biannual change made necessary by the much hyped, supposedly 714136638Swollman# modern Brazilian eletronic voting machines which, apparently, can't deal 715136638Swollman# with a time change between the first and the second rounds of the elections. 716136638Swollman 717172479Sedwin# From Steffen Thorsen (2007-09-20): 718172479Sedwin# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 719172479Sedwin# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 720172479Sedwin 721181421Sedwin# From Paul Schulze (2008-06-24): 722181421Sedwin# ...by law number 11.662 of April 24, 2008 (published in the "Diario 723181421Sedwin# Oficial da Uniao"...) in Brazil there are changes in the timezones, 724181421Sedwin# effective today (00:00am at June 24, 2008) as follows: 725181421Sedwin# 726181421Sedwin# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 727181421Sedwin# part of the Amazonas state that had this timezone now being put to the 728181421Sedwin# timezone UTC+4 729181421Sedwin# b) The whole Para state now is put at timezone UTC+3, instead of just 730181421Sedwin# part of it, as was before. 731181421Sedwin# 732181421Sedwin# This change follows a proposal of senator Tiao Viana of Acre state, that 733181421Sedwin# proposed it due to concerns about open television channels displaying 734181421Sedwin# programs inappropriate to youths in the states that had the timezone 735181421Sedwin# UTC+5 too early in the night. In the occasion, some more corrections 736181421Sedwin# were proposed, trying to unify the timezones of any given state. This 737181421Sedwin# change modifies timezone rules defined in decree 2.784 of 18 June, 738181421Sedwin# 1913. 739181421Sedwin 740181421Sedwin# From Rodrigo Severo (2008-06-24): 741181421Sedwin# Just correcting the URL: 742192886Sedwin# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 743192886Sedwin# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 744181421Sedwin# </a> 745181421Sedwin# 746181421Sedwin# As a result of the above Decree I believe the America/Rio_Branco 747181421Sedwin# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 748221092Sedwin# be created to represent the...west side of the Para State. I 749181421Sedwin# suggest this new timezone be called Santarem as the most 750181421Sedwin# important/populated city in the affected area. 751181421Sedwin# 752181421Sedwin# This new timezone would be the same as the Rio_Branco timezone up to 753181421Sedwin# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 754181421Sedwin 755181421Sedwin# From Alex Krivenyshev (2008-06-24): 756181421Sedwin# This is a quick reference page for New and Old Brazil Time Zones map. 757181421Sedwin# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 758181421Sedwin# http://www.worldtimezone.com/brazil-time-new-old.php 759181421Sedwin# </a> 760181421Sedwin# 761181421Sedwin# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 762181421Sedwin# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 763181421Sedwin# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 764181421Sedwin 765105196Swollman# From Paul Eggert (2002-10-10): 766105196Swollman# The official decrees referenced below are mostly taken from 76743014Swollman# <a href="http://pcdsh01.on.br/DecHV.html"> 76843014Swollman# Decretos sobre o Horario de Verao no Brasil 769163302Sru# </a>. 77043014Swollman 771183066Sedwin# From Steffen Thorsen (2008-08-29): 772183066Sedwin# As announced by the government and many newspapers in Brazil late 773183066Sedwin# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 774183066Sedwin# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 775183066Sedwin# past years experience with the elections, there was a good chance that 776183066Sedwin# the start was postponed to November, but it did not happen this year. 777183066Sedwin# 778183066Sedwin# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 779183066Sedwin# 780183066Sedwin# An official page about it: 781183066Sedwin# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 782183066Sedwin# http://www.mme.gov.br/site/news/detail.do?newsId=16722 783183066Sedwin# </a> 784183066Sedwin# Note that this link does not always work directly, but must be accessed 785183066Sedwin# by going to 786183536Sedwin# <a href="http://www.mme.gov.br/first"> 787183066Sedwin# http://www.mme.gov.br/first 788183066Sedwin# </a> 789183066Sedwin# 790183066Sedwin# One example link that works directly: 791183066Sedwin# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 792183066Sedwin# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 793183066Sedwin# (Portuguese) 794183066Sedwin# </a> 795183066Sedwin# 796183066Sedwin# We have a written a short article about it as well: 797183066Sedwin# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 798183066Sedwin# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 799183066Sedwin# </a> 800226298Sedwin# 801226298Sedwin# From Alexander Krivenyshev (2011-10-04): 802226298Sedwin# State Bahia will return to Daylight savings time this year after 8 years off. 803226298Sedwin# The announcement was made by Governor Jaques Wagner in an interview to a 804226298Sedwin# television station in Salvador. 805183066Sedwin 806226298Sedwin# In Portuguese: 807226298Sedwin# <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html"> 808226298Sedwin# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 809226298Sedwin# </a> and 810226298Sedwin# <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html"> 811226298Sedwin# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 812226298Sedwin# </a> 813226298Sedwin 814226298Sedwin# From Guilherme Bernardes Rodrigues (2011-10-07): 815226298Sedwin# There is news in the media, however there is still no decree about it. 816226298Sedwin# I just send a e-mail to Zulmira Brand�o at 817226298Sedwin# <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the 818226298Sedwin# oficial agency about time in Brazil, and she confirmed that the old rule is 819226298Sedwin# still in force. 820226298Sedwin 821226784Sedwin# From Guilherme Bernardes Rodrigues (2011-10-14) 822226784Sedwin# It's official, the President signed a decree that includes Bahia in summer 823226784Sedwin# time. 824226784Sedwin# [ and in a second message (same day): ] 825226784Sedwin# I found the decree. 826226784Sedwin# 827226784Sedwin# DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 828226784Sedwin# Link : 829226784Sedwin# <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6"> 830226784Sedwin# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 831226784Sedwin# </a> 832226784Sedwin 833226784Sedwin 8342742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 83543543Swollman# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 83643543Swollman# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 83758787SruRule Brazil 1931 only - Oct 3 11:00 1:00 S 83858787SruRule Brazil 1932 1933 - Apr 1 0:00 0 - 83958787SruRule Brazil 1932 only - Oct 3 0:00 1:00 S 84043543Swollman# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 84143014Swollman# revoked DST. 84243543Swollman# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 84343543Swollman# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 84458787SruRule Brazil 1949 1952 - Dec 1 0:00 1:00 S 84558787SruRule Brazil 1950 only - Apr 16 1:00 0 - 84658787SruRule Brazil 1951 1952 - Apr 1 0:00 0 - 84743543Swollman# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 84858787SruRule Brazil 1953 only - Mar 1 0:00 0 - 84943543Swollman# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 85043014Swollman# revoked DST. 85143543Swollman# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 85243543Swollman# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 85343543Swollman# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 85443543Swollman# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 85543543Swollman# extended the above decree to all of the national territory on 12-09. 85658787SruRule Brazil 1963 only - Dec 9 0:00 1:00 S 85743543Swollman# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 85843543Swollman# extended summer time by one day to 1964-03-01 00:00 (start of school). 85958787SruRule Brazil 1964 only - Mar 1 0:00 0 - 86043543Swollman# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 86158787SruRule Brazil 1965 only - Jan 31 0:00 1:00 S 86258787SruRule Brazil 1965 only - Mar 31 0:00 0 - 86343543Swollman# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 86458787SruRule Brazil 1965 only - Dec 1 0:00 1:00 S 86543543Swollman# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 86658787SruRule Brazil 1966 1968 - Mar 1 0:00 0 - 86758787SruRule Brazil 1966 1967 - Nov 1 0:00 1:00 S 86843543Swollman# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 86943543Swollman# revoked DST. 87043543Swollman# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 87158787SruRule Brazil 1985 only - Nov 2 0:00 1:00 S 87243543Swollman# Decree 92,310 (1986-01-21) 87343543Swollman# Decree 92,463 (1986-03-13) 87458787SruRule Brazil 1986 only - Mar 15 0:00 0 - 87543543Swollman# Decree 93,316 (1986-10-01) 87658787SruRule Brazil 1986 only - Oct 25 0:00 1:00 S 87758787SruRule Brazil 1987 only - Feb 14 0:00 0 - 87843543Swollman# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 87958787SruRule Brazil 1987 only - Oct 25 0:00 1:00 S 88058787SruRule Brazil 1988 only - Feb 7 0:00 0 - 88143543Swollman# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 88243543Swollman# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 88358787SruRule Brazil 1988 only - Oct 16 0:00 1:00 S 88458787SruRule Brazil 1989 only - Jan 29 0:00 0 - 88543543Swollman# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 88643543Swollman# with the same exceptions 88758787SruRule Brazil 1989 only - Oct 15 0:00 1:00 S 88858787SruRule Brazil 1990 only - Feb 11 0:00 0 - 88943543Swollman# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 89043543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 89143543Swollman# Decree 99,629 (1990-10-19) adds BA, MT. 89258787SruRule Brazil 1990 only - Oct 21 0:00 1:00 S 89358787SruRule Brazil 1991 only - Feb 17 0:00 0 - 89443543Swollman# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 89543543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 89658787SruRule Brazil 1991 only - Oct 20 0:00 1:00 S 89758787SruRule Brazil 1992 only - Feb 9 0:00 0 - 89843543Swollman# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 89943543Swollman# adopted by same states. 90058787SruRule Brazil 1992 only - Oct 25 0:00 1:00 S 90158787SruRule Brazil 1993 only - Jan 31 0:00 0 - 90243014Swollman# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 90343543Swollman# adopted by same states, plus AM. 904136638Swollman# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 905136638Swollman# web page corrected 2004-01-07) adopted by same states, minus AM. 90643543Swollman# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 907136638Swollman# adopted by same states, plus MT and TO. 90843543Swollman# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 90943543Swollman# adds AL, SE. 91058787SruRule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 91158787SruRule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 91258787SruRule Brazil 1996 only - Feb 11 0:00 0 - 91343543Swollman# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 91443543Swollman# adopted by same states, minus AL, SE. 91558787SruRule Brazil 1996 only - Oct 6 0:00 1:00 S 91658787SruRule Brazil 1997 only - Feb 16 0:00 0 - 917149514Swollman# From Daniel C. Sobral (1998-02-12): 91843014Swollman# In 1997, the DS began on October 6. The stated reason was that 91943014Swollman# because international television networks ignored Brazil's policy on DS, 92043014Swollman# they bought the wrong times on satellite for coverage of Pope's visit. 92143014Swollman# This year, the ending date of DS was postponed to March 1 92243014Swollman# to help dealing with the shortages of electric power. 92343014Swollman# 92443543Swollman# Decree 2,317 (1997-09-04), adopted by same states. 92558787SruRule Brazil 1997 only - Oct 6 0:00 1:00 S 92643543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 92743014Swollman# (1998-02-10) 92858787SruRule Brazil 1998 only - Mar 1 0:00 0 - 92943543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 93058787Sru# adopted by the same states as before. 93158787SruRule Brazil 1998 only - Oct 11 0:00 1:00 S 93258787SruRule Brazil 1999 only - Feb 21 0:00 0 - 93358787Sru# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 93458787Sru# (1999-08-23) adopted by same states. 93558787Sru# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 93667578Swollman# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 93767578SwollmanRule Brazil 1999 only - Oct 3 0:00 1:00 S 93867578SwollmanRule Brazil 2000 only - Feb 27 0:00 0 - 93967578Swollman# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 94067578Swollman# adopted by the same states as before. 94175267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 94275267Swollman# repeals DST in PE and RR, effective 2000-10-15 00:00. 94375267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 94475267Swollman# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 94586222Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 94686222Swollman# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 947105196SwollmanRule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 948163302SruRule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 949105196Swollman# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 950181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 951105196SwollmanRule Brazil 2002 only - Nov 3 0:00 1:00 S 952121098Swollman# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 953181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 954136638SwollmanRule Brazil 2003 only - Oct 19 0:00 1:00 S 955136638Swollman# Decree 5,223 (2004-10-01) reestablishes DST in MT. 956181421Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 957136638SwollmanRule Brazil 2004 only - Nov 2 0:00 1:00 S 958153670Swollman# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 959153670Swollman# adopted by the same states as before. 960163302SruRule Brazil 2005 only - Oct 16 0:00 1:00 S 961172479Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 962172479Sedwin# adopted by the same states as before. 963172479SedwinRule Brazil 2006 only - Nov 5 0:00 1:00 S 964172479SedwinRule Brazil 2007 only - Feb 25 0:00 0 - 965181421Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 966181421Sedwin# adopted by the same states as before. 967183066SedwinRule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 968183536Sedwin# From Frederico A. C. Neves (2008-09-10): 969183536Sedwin# Acording to this decree 970183536Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 971183536Sedwin# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 972183536Sedwin# </a> 973183536Sedwin# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 974183536Sedwin# 3rd Feb Sunday. There is an exception on the return date when this is 975183536Sedwin# the Carnival Sunday then the return date will be the next Sunday... 976183536SedwinRule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 977183536SedwinRule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 978183536SedwinRule Brazil 2012 only - Feb Sun>=22 0:00 0 - 979183536SedwinRule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 980183536SedwinRule Brazil 2015 only - Feb Sun>=22 0:00 0 - 981183536SedwinRule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 982183536SedwinRule Brazil 2023 only - Feb Sun>=22 0:00 0 - 983183536SedwinRule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 984183536SedwinRule Brazil 2026 only - Feb Sun>=22 0:00 0 - 985183536SedwinRule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 986183536SedwinRule Brazil 2034 only - Feb Sun>=22 0:00 0 - 987183536SedwinRule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 988183536SedwinRule Brazil 2037 only - Feb Sun>=22 0:00 0 - 989183536Sedwin# From Arthur David Olson (2008-09-29): 990183536Sedwin# The next is wrong in some years but is better than nothing. 991183536SedwinRule Brazil 2038 max - Feb Sun>=15 0:00 0 - 992183536Sedwin 993121098Swollman# The latest ruleset listed above says that the following states observe DST: 994136638Swollman# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 99520094Swollman 9962742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 99720094Swollman# 998136638Swollman# Fernando de Noronha (administratively part of PE) 9992742SwollmanZone America/Noronha -2:09:40 - LMT 1914 100058787Sru -2:00 Brazil FN%sT 1990 Sep 17 1001136638Swollman -2:00 - FNT 1999 Sep 30 1002136638Swollman -2:00 Brazil FN%sT 2000 Oct 15 1003136638Swollman -2:00 - FNT 2001 Sep 13 1004136638Swollman -2:00 Brazil FN%sT 2002 Oct 1 100558787Sru -2:00 - FNT 1006136638Swollman# Other Atlantic islands have no permanent settlement. 1007136638Swollman# These include Trindade and Martin Vaz (administratively part of ES), 1008136638Swollman# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 1009136638Swollman# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 1010136638Swollman# it also included the Penedos. 101120094Swollman# 101258787Sru# Amapa (AP), east Para (PA) 101375267Swollman# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 1014121098Swollman# The division between east and west Para is the river Xingu. 1015121098Swollman# In the north a very small part from the river Javary (now Jari I guess, 1016121098Swollman# the border with Amapa) to the Amazon, then to the Xingu. 101743543SwollmanZone America/Belem -3:13:56 - LMT 1914 101858787Sru -3:00 Brazil BR%sT 1988 Sep 12 101958787Sru -3:00 - BRT 102043543Swollman# 1021181421Sedwin# west Para (PA) 1022181421Sedwin# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 1023181421SedwinZone America/Santarem -3:38:48 - LMT 1914 1024181421Sedwin -4:00 Brazil AM%sT 1988 Sep 12 1025181421Sedwin -4:00 - AMT 2008 Jun 24 00:00 1026181421Sedwin -3:00 - BRT 1027181421Sedwin# 102858787Sru# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 102975267Swollman# Paraiba (PB) 103020094SwollmanZone America/Fortaleza -2:34:00 - LMT 1914 103158787Sru -3:00 Brazil BR%sT 1990 Sep 17 103258787Sru -3:00 - BRT 1999 Sep 30 103375267Swollman -3:00 Brazil BR%sT 2000 Oct 22 103486222Swollman -3:00 - BRT 2001 Sep 13 1035105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1036105196Swollman -3:00 - BRT 103720094Swollman# 103875267Swollman# Pernambuco (PE) (except Atlantic islands) 103975267SwollmanZone America/Recife -2:19:36 - LMT 1914 104075267Swollman -3:00 Brazil BR%sT 1990 Sep 17 104175267Swollman -3:00 - BRT 1999 Sep 30 104275267Swollman -3:00 Brazil BR%sT 2000 Oct 15 104386222Swollman -3:00 - BRT 2001 Sep 13 1044105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1045105196Swollman -3:00 - BRT 104675267Swollman# 104758787Sru# Tocantins (TO) 104843543SwollmanZone America/Araguaina -3:12:48 - LMT 1914 104958787Sru -3:00 Brazil BR%sT 1990 Sep 17 105058787Sru -3:00 - BRT 1995 Sep 14 1051121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 1052121098Swollman -3:00 - BRT 105320094Swollman# 105458787Sru# Alagoas (AL), Sergipe (SE) 105543543SwollmanZone America/Maceio -2:22:52 - LMT 1914 105658787Sru -3:00 Brazil BR%sT 1990 Sep 17 105758787Sru -3:00 - BRT 1995 Oct 13 105858787Sru -3:00 Brazil BR%sT 1996 Sep 4 105958787Sru -3:00 - BRT 1999 Sep 30 106075267Swollman -3:00 Brazil BR%sT 2000 Oct 22 106186222Swollman -3:00 - BRT 2001 Sep 13 1062105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1063105196Swollman -3:00 - BRT 106443543Swollman# 1065121098Swollman# Bahia (BA) 1066121098Swollman# There are too many Salvadors elsewhere, so use America/Bahia instead 1067121098Swollman# of America/Salvador. 1068121098SwollmanZone America/Bahia -2:34:04 - LMT 1914 1069121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 1070226784Sedwin -3:00 - BRT 2011 Oct 16 1071226784Sedwin -3:00 Brazil BR%sT 1072121098Swollman# 1073121098Swollman# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 107458787Sru# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 107558787Sru# Santa Catarina (SC), Rio Grande do Sul (RS) 10762742SwollmanZone America/Sao_Paulo -3:06:28 - LMT 1914 107758787Sru -3:00 Brazil BR%sT 1963 Oct 23 00:00 107858787Sru -3:00 1:00 BRST 1964 107958787Sru -3:00 Brazil BR%sT 108020094Swollman# 1081121098Swollman# Mato Grosso do Sul (MS) 1082121098SwollmanZone America/Campo_Grande -3:38:28 - LMT 1914 108358787Sru -4:00 Brazil AM%sT 108420094Swollman# 1085121098Swollman# Mato Grosso (MT) 1086121098SwollmanZone America/Cuiaba -3:44:20 - LMT 1914 1087121098Swollman -4:00 Brazil AM%sT 2003 Sep 24 1088138323Swollman -4:00 - AMT 2004 Oct 1 1089136638Swollman -4:00 Brazil AM%sT 1090121098Swollman# 1091181421Sedwin# Rondonia (RO) 109243543SwollmanZone America/Porto_Velho -4:15:36 - LMT 1914 109358787Sru -4:00 Brazil AM%sT 1988 Sep 12 109458787Sru -4:00 - AMT 109543543Swollman# 109658787Sru# Roraima (RR) 109758787SruZone America/Boa_Vista -4:02:40 - LMT 1914 109858787Sru -4:00 Brazil AM%sT 1988 Sep 12 109958787Sru -4:00 - AMT 1999 Sep 30 110075267Swollman -4:00 Brazil AM%sT 2000 Oct 15 110175267Swollman -4:00 - AMT 110258787Sru# 110375267Swollman# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1104121098Swollman# The great circle line from Tabatinga to Porto Acre divides 1105121098Swollman# east from west Amazonas. 11062742SwollmanZone America/Manaus -4:00:04 - LMT 1914 110758787Sru -4:00 Brazil AM%sT 1988 Sep 12 110858787Sru -4:00 - AMT 1993 Sep 28 110958787Sru -4:00 Brazil AM%sT 1994 Sep 22 111058787Sru -4:00 - AMT 111120094Swollman# 111275267Swollman# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 111375267Swollman# Eirunepe, Envira, Ipixuna 111475267SwollmanZone America/Eirunepe -4:39:28 - LMT 1914 111575267Swollman -5:00 Brazil AC%sT 1988 Sep 12 111675267Swollman -5:00 - ACT 1993 Sep 28 111775267Swollman -5:00 Brazil AC%sT 1994 Sep 22 1118181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 1119181421Sedwin -4:00 - AMT 112075267Swollman# 112158787Sru# Acre (AC) 112275267SwollmanZone America/Rio_Branco -4:31:12 - LMT 1914 112358787Sru -5:00 Brazil AC%sT 1988 Sep 12 1124181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 1125181421Sedwin -4:00 - AMT 11262742Swollman 11272742Swollman# Chile 11282742Swollman 112914343Swollman# From Eduardo Krell (1995-10-19): 113014343Swollman# The law says to switch to DST at midnight [24:00] on the second SATURDAY 113114343Swollman# of October.... The law is the same for March and October. 113243014Swollman# (1998-09-29): 113343014Swollman# Because of the drought this year, the government decided to go into 113443014Swollman# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 113543014Swollman# (unless there's another dry season next year, I guess). 11362742Swollman 113758787Sru# From Julio I. Pacheco Troncoso (1999-03-18): 113858787Sru# Because of the same drought, the government decided to end DST later, 113958787Sru# on April 3, (one-time change). 114058787Sru 1141169811Swollman# From Oscar van Vlijmen (2006-10-08): 1142169811Swollman# http://www.horaoficial.cl/cambio.htm 114375267Swollman 1144169811Swollman# From Jesper Norgaard Welen (2006-10-08): 1145169811Swollman# I think that there are some obvious mistakes in the suggested link 1146169811Swollman# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1147169811Swollman# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1148169811Swollman# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1149169811Swollman# anyhow it clears up some doubts too. 115075267Swollman 1151169811Swollman# From Paul Eggert (2006-12-27): 1152169811Swollman# The following data for Chile and America/Santiago are from 1153169811Swollman# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1154169811Swollman# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1155169811Swollman# & Pottenger, except with DST transitions after 1932 cloned from 1156169811Swollman# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1157169811Swollman# but we have no other source. 1158114173Swollman 1159176974Sedwin# From German Poo-Caaman~o (2008-03-03): 1160176974Sedwin# Due to drought, Chile extends Daylight Time in three weeks. This 1161176974Sedwin# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1162176974Sedwin# and Saturday 3/29 at 22:00 for Pacific/Easter) 1163176974Sedwin# The Supreme Decree is located at 1164176974Sedwin# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1165176974Sedwin# http://www.shoa.cl/servicios/supremo316.pdf 1166176974Sedwin# </a> 1167176974Sedwin# and the instructions for 2008 are located in: 1168176974Sedwin# <a href="http://www.horaoficial.cl/cambio.htm"> 1169176974Sedwin# http://www.horaoficial.cl/cambio.htm 1170176974Sedwin# </a>. 1171176974Sedwin 1172181421Sedwin# From Jose Miguel Garrido (2008-03-05): 1173176974Sedwin# ... 1174176974Sedwin# You could see the announces of the change on 1175176974Sedwin# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1176176974Sedwin# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1177176974Sedwin# </a>. 1178176974Sedwin 1179204887Sedwin# From Angel Chiang (2010-03-04): 1180204887Sedwin# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1181204887Sedwin# <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> 1182204887Sedwin# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1183204887Sedwin# </a> 1184204887Sedwin# (in Spanish, last paragraph). 1185204887Sedwin# 1186204887Sedwin# This is breaking news. There should be more information available later. 1187204887Sedwin 1188204887Sedwin# From Arthur Daivd Olson (2010-03-06): 1189204887Sedwin# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1190204887Sedwin 1191219411Sedwin# From Glenn Eychaner (2011-03-02): [geychaner@mac.com] 1192219411Sedwin# It appears that the Chilean government has decided to postpone the 1193219411Sedwin# change from summer time to winter time again, by three weeks to April 1194219411Sedwin# 2nd: 1195219411Sedwin# <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651"> 1196219411Sedwin# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 1197219411Sedwin# </a> 1198219411Sedwin# 1199219411Sedwin# This is not yet reflected in the offical "cambio de hora" site, but 1200219411Sedwin# probably will be soon: 1201219411Sedwin# <a href="http://www.horaoficial.cl/cambio.htm"> 1202219411Sedwin# http://www.horaoficial.cl/cambio.htm 1203219411Sedwin# </a> 1204219411Sedwin 1205219411Sedwin# From Arthur David Olson (2011-03-02): 1206219411Sedwin# The emol.com article mentions a water shortage as the cause of the 1207219411Sedwin# postponement, which may mean that it's not a permanent change. 1208220286Sedwin 1209220286Sedwin# From Glenn Eychaner (2011-03-28): 1210220286Sedwin# The article: 1211220286Sedwin# <a href="http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}"> 1212220286Sedwin# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1213220286Sedwin# </a> 1214220286Sedwin# 1215220286Sedwin# In English: 1216220286Sedwin# Chile's clocks will go back an hour this year on the 7th of May instead 1217220286Sedwin# of this Saturday. They will go forward again the 3rd Saturday in 1218220286Sedwin# August, not in October as they have since 1968. This is a pilot plan 1219220286Sedwin# which will be reevaluated in 2012. 1220220286Sedwin 12212742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1222169811SwollmanRule Chile 1927 1932 - Sep 1 0:00 1:00 S 122358787SruRule Chile 1928 1932 - Apr 1 0:00 0 - 1224169811SwollmanRule Chile 1942 only - Jun 1 4:00u 0 - 1225169811SwollmanRule Chile 1942 only - Aug 1 5:00u 1:00 S 1226169811SwollmanRule Chile 1946 only - Jul 15 4:00u 1:00 S 1227169811SwollmanRule Chile 1946 only - Sep 1 3:00u 0:00 - 1228169811SwollmanRule Chile 1947 only - Apr 1 4:00u 0 - 1229169811SwollmanRule Chile 1968 only - Nov 3 4:00u 1:00 S 1230169811SwollmanRule Chile 1969 only - Mar 30 3:00u 0 - 1231169811SwollmanRule Chile 1969 only - Nov 23 4:00u 1:00 S 1232169811SwollmanRule Chile 1970 only - Mar 29 3:00u 0 - 1233169811SwollmanRule Chile 1971 only - Mar 14 3:00u 0 - 1234169811SwollmanRule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1235169811SwollmanRule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1236169811SwollmanRule Chile 1973 only - Sep 30 4:00u 1:00 S 1237169811SwollmanRule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1238169811SwollmanRule Chile 1987 only - Apr 12 3:00u 0 - 1239169811SwollmanRule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1240169811SwollmanRule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1241169811SwollmanRule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1242169811SwollmanRule Chile 1990 only - Mar 18 3:00u 0 - 1243169811SwollmanRule Chile 1990 only - Sep 16 4:00u 1:00 S 1244169811SwollmanRule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1245169811SwollmanRule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1246169811SwollmanRule Chile 1997 only - Mar 30 3:00u 0 - 1247169811SwollmanRule Chile 1998 only - Mar Sun>=9 3:00u 0 - 124875267SwollmanRule Chile 1998 only - Sep 27 4:00u 1:00 S 124975267SwollmanRule Chile 1999 only - Apr 4 3:00u 0 - 1250220286SedwinRule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1251220286SedwinRule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1252220286SedwinRule Chile 2012 max - Oct Sun>=9 4:00u 1:00 S 1253176974SedwinRule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1254176974Sedwin# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1255176974Sedwin# which is used below in specifying the transition. 1256176974SedwinRule Chile 2008 only - Mar 30 3:00u 0 - 1257204887SedwinRule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1258220286SedwinRule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1259220286SedwinRule Chile 2011 only - May Sun>=2 3:00u 0 - 1260219411SedwinRule Chile 2012 max - Mar Sun>=9 3:00u 0 - 1261169811Swollman# IATA SSIM anomalies: (1992-02) says 1992-03-14; 126258787Sru# (1996-09) says 1998-03-08. Ignore these. 12632742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1264169811SwollmanZone America/Santiago -4:42:46 - LMT 1890 1265169811Swollman -4:42:46 - SMT 1910 # Santiago Mean Time 1266169811Swollman -5:00 - CLT 1916 Jul 1 # Chile Time 1267169811Swollman -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1268169811Swollman -4:00 - CLT 1919 Jul 1 # Chile Time 1269169811Swollman -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1270169811Swollman -5:00 Chile CL%sT 1947 May 22 # Chile Time 127119878Swollman -4:00 Chile CL%sT 1272169811SwollmanZone Pacific/Easter -7:17:44 - LMT 1890 1273169811Swollman -7:17:28 - EMT 1932 Sep # Easter Mean Time 1274158421Swollman -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 127519878Swollman -6:00 Chile EAS%sT 12762742Swollman# 127786222Swollman# Sala y Gomez Island is like Pacific/Easter. 127886222Swollman# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 127986222Swollman# San Felix, and Antarctic bases, are like America/Santiago. 12802742Swollman 12812742Swollman# Colombia 128220094Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1283158421SwollmanRule CO 1992 only - May 3 0:00 1:00 S 1284158421SwollmanRule CO 1993 only - Apr 4 0:00 0 - 12852742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12862742SwollmanZone America/Bogota -4:56:20 - LMT 1884 Mar 13 128719878Swollman -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 128820094Swollman -5:00 CO CO%sT # Colombia Time 12892742Swollman# Malpelo, Providencia, San Andres 12902742Swollman# no information; probably like America/Bogota 12912742Swollman 12922742Swollman# Curacao 1293158421Swollman# 1294169811Swollman# From Paul Eggert (2006-03-22): 1295158421Swollman# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1296158421Swollman# -4:00 since standard time was introduced on 1912-03-02; and that 1297158421Swollman# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1298158421Swollman# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1299158421Swollman# Saba Island has been like Curacao. 1300169811Swollman# This all predates our 1970 cutoff, though. 1301158421Swollman# 1302158421Swollman# By July 2007 Curacao and St Maarten are planned to become 1303158421Swollman# associated states within the Netherlands, much like Aruba; 1304158421Swollman# Bonaire, Saba and St Eustatius would become directly part of the 1305158421Swollman# Netherlands as Kingdom Islands. This won't affect their time zones 1306158421Swollman# though, as far as we know. 1307169811Swollman# 13082742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13092742SwollmanZone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 131019878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 13112742Swollman -4:00 - AST 13122742Swollman 1313223629Sedwin# From Arthur David Olson (2011-06-15): 1314223629Sedwin# At least for now, use links for places with new iso3166 codes. 1315223629Sedwin# The name "Lower Prince's Quarter" is both longer than fourteen charaters 1316223629Sedwin# and contains an apostrophe; use "Lower_Princes" below. 1317223629Sedwin 1318223629SedwinLink America/Curacao America/Lower_Princes # Sint Maarten 1319223629SedwinLink America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba 1320223629Sedwin 13212742Swollman# Ecuador 1322169811Swollman# 1323169811Swollman# From Paul Eggert (2007-03-04): 1324169811Swollman# Apparently Ecuador had a failed experiment with DST in 1992. 1325169811Swollman# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1326169811Swollman# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1327169811Swollman# talk about "hora Sixto". Leave this alone for now, as we have no data. 1328169811Swollman# 13292742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13302742SwollmanZone America/Guayaquil -5:19:20 - LMT 1890 133119878Swollman -5:14:00 - QMT 1931 # Quito Mean Time 133219878Swollman -5:00 - ECT # Ecuador Time 13332742SwollmanZone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 133419878Swollman -5:00 - ECT 1986 133519878Swollman -6:00 - GALT # Galapagos Time 13362742Swollman 13372742Swollman# Falklands 133875267Swollman 1339158421Swollman# From Paul Eggert (2006-03-22): 1340158421Swollman# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1341158421Swollman# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 134275267Swollman 134375267Swollman# From Falkland Islands Government Office, London (2001-01-22) 134475267Swollman# via Jesper Norgaard: 134575267Swollman# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 134675267Swollman# April 2001 and advance one hour to summer time at 2 am on Sunday 2 134775267Swollman# September. It is anticipated that the clocks will revert back at 2 134875267Swollman# am on Sunday 21 April 2002 and advance to summer time at 2 am on 134975267Swollman# Sunday 1 September. 135075267Swollman 135175267Swollman# From Rives McDow (2001-02-13): 135275267Swollman# 135375267Swollman# I have communicated several times with people there, and the last 135475267Swollman# time I had communications that was helpful was in 1998. Here is 135575267Swollman# what was said then: 135675267Swollman# 135775267Swollman# "The general rule was that Stanley used daylight saving and the Camp 135875267Swollman# did not. However for various reasons many people in the Camp have 135975267Swollman# started to use daylight saving (known locally as 'Stanley Time') 136075267Swollman# There is no rule as to who uses daylight saving - it is a matter of 136175267Swollman# personal choice and so it is impossible to draw a map showing who 136275267Swollman# uses it and who does not. Any list would be out of date as soon as 136375267Swollman# it was produced. This year daylight saving ended on April 18/19th 136475267Swollman# and started again on September 12/13th. I do not know what the rule 136575267Swollman# is, but can find out if you like. We do not change at the same time 136675267Swollman# as UK or Chile." 136775267Swollman# 136875267Swollman# I did have in my notes that the rule was "Second Saturday in Sep at 136975267Swollman# 0:00 until third Saturday in Apr at 0:00". I think that this does 137075267Swollman# not agree in some cases with Shanks; is this true? 137175267Swollman# 137275267Swollman# Also, there is no mention in the list that some areas in the 137375267Swollman# Falklands do not use DST. I have found in my communications there 137475267Swollman# that these areas are on the western half of East Falkland and all of 137575267Swollman# West Falkland. Stanley is the only place that consistently observes 137675267Swollman# DST. Again, as in other places in the world, the farmers don't like 137775267Swollman# it. West Falkland is almost entirely sheep farmers. 137875267Swollman# 137975267Swollman# I know one lady there that keeps a list of which farm keeps DST and 138075267Swollman# which doesn't each year. She runs a shop in Stanley, and says that 138175267Swollman# the list changes each year. She uses it to communicate to her 138275267Swollman# customers, catching them when they are home for lunch or dinner. 138375267Swollman 138475267Swollman# From Paul Eggert (2001-03-05): 138575267Swollman# For now, we'll just record the time in Stanley, since we have no 138675267Swollman# better info. 138775267Swollman 1388220549Sedwin# From Steffen Thorsen (2011-04-01): 1389220549Sedwin# The Falkland Islands will not turn back clocks this winter, but stay on 1390220549Sedwin# daylight saving time. 1391220549Sedwin# 1392220549Sedwin# One source: 1393220549Sedwin# <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> 1394220549Sedwin# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1395220549Sedwin# </a> 1396220549Sedwin# 1397220549Sedwin# We have gotten this confirmed by a clerk of the legislative assembly: 1398220549Sedwin# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1399220549Sedwin# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1400220549Sedwin# hours) on the first Sunday of September at 0200hrs. 1401220549Sedwin# 1402220549Sedwin# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1403220549Sedwin# will not revert to local mean time, but clocks will remain on Summer 1404220549Sedwin# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1405220549Sedwin# change to local time following the trial period will be notified. 14062742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 140719878SwollmanRule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 140819878SwollmanRule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 140919878SwollmanRule Falk 1939 only - Oct 1 0:00 1:00 S 141019878SwollmanRule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 141119878SwollmanRule Falk 1943 only - Jan 1 0:00 0 - 141219878SwollmanRule Falk 1983 only - Sep lastSun 0:00 1:00 S 141319878SwollmanRule Falk 1984 1985 - Apr lastSun 0:00 0 - 141419878SwollmanRule Falk 1984 only - Sep 16 0:00 1:00 S 141575267SwollmanRule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 141675267SwollmanRule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1417220549SedwinRule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1418220549SedwinRule Falk 2012 max - Apr Sun>=15 2:00 0 - 141975267SwollmanRule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 14202742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14212742SwollmanZone Atlantic/Stanley -3:51:24 - LMT 1890 142219878Swollman -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 142319878Swollman -4:00 Falk FK%sT 1983 May # Falkland Is Time 142419878Swollman -3:00 Falk FK%sT 1985 Sep 15 142519878Swollman -4:00 Falk FK%sT 14262742Swollman 14272742Swollman# French Guiana 14282742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14292742SwollmanZone America/Cayenne -3:29:20 - LMT 1911 Jul 143019878Swollman -4:00 - GFT 1967 Oct # French Guiana Time 143119878Swollman -3:00 - GFT 14322742Swollman 14332742Swollman# Guyana 14342742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14352742SwollmanZone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 143619878Swollman -3:45 - GBGT 1966 May 26 # Br Guiana Time 143719878Swollman -3:45 - GYT 1975 Jul 31 # Guyana Time 143820094Swollman -3:00 - GYT 1991 143920094Swollman# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 144020094Swollman -4:00 - GYT 14412742Swollman 14422742Swollman# Paraguay 1443158421Swollman# From Paul Eggert (2006-03-22): 1444158421Swollman# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1445158421Swollman# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 144658787Sru# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 14472742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 144858787SruRule Para 1975 1988 - Oct 1 0:00 1:00 S 144919878SwollmanRule Para 1975 1978 - Mar 1 0:00 0 - 145058787SruRule Para 1979 1991 - Apr 1 0:00 0 - 145119878SwollmanRule Para 1989 only - Oct 22 0:00 1:00 S 145220094SwollmanRule Para 1990 only - Oct 1 0:00 1:00 S 145320094SwollmanRule Para 1991 only - Oct 6 0:00 1:00 S 145420094SwollmanRule Para 1992 only - Mar 1 0:00 0 - 145520094SwollmanRule Para 1992 only - Oct 5 0:00 1:00 S 145620094SwollmanRule Para 1993 only - Mar 31 0:00 0 - 145730711SwollmanRule Para 1993 1995 - Oct 1 0:00 1:00 S 145820094SwollmanRule Para 1994 1995 - Feb lastSun 0:00 0 - 145958787SruRule Para 1996 only - Mar 1 0:00 0 - 146075267Swollman# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 146167578Swollman# From Steffen Thorsen (2000-10-02): 146267578Swollman# I have three independent reports that Paraguay changed to DST this Sunday 146367578Swollman# (10-01). 146475267Swollman# 146575267Swollman# Translated by Gwillim Law (2001-02-27) from 146675267Swollman# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 146775267Swollman# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 146875267Swollman# </a>: 146975267Swollman# Starting at 0:00 today, the clock will be set forward 60 minutes, in 147075267Swollman# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 147175267Swollman# system has been operating for several years. Formerly there was a separate 147275267Swollman# decree each year; the new law has the same effect, but permanently. Every 147375267Swollman# year, the time will change on the first Sunday of October; likewise, the 147475267Swollman# clock will be set back on the first Sunday of March. 147575267Swollman# 147693799SwollmanRule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1477158421Swollman# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 147875267SwollmanRule Para 1997 only - Feb lastSun 0:00 0 - 1479158421Swollman# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 148075267Swollman# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 148193799SwollmanRule Para 1998 2001 - Mar Sun>=1 0:00 0 - 148293799Swollman# From Rives McDow (2002-02-28): 148393799Swollman# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 148493799Swollman# dst method to be from the first Sunday in September to the first Sunday in 148593799Swollman# April. 1486149514SwollmanRule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1487149514SwollmanRule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1488149514Swollman# 1489149514Swollman# From Jesper Norgaard Welen (2005-01-02): 1490149514Swollman# There are several sources that claim that Paraguay made 1491149514Swollman# a timezone rule change in autumn 2004. 1492149514Swollman# From Steffen Thorsen (2005-01-05): 1493169811Swollman# Decree 1,867 (2004-03-05) 1494169811Swollman# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1495169811Swollman# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1496204566SedwinRule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1497204566SedwinRule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1498204566Sedwin# From Carlos Raul Perasso (2010-02-18): 1499204566Sedwin# By decree number 3958 issued yesterday ( 1500204566Sedwin# <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> 1501204566Sedwin# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1502204566Sedwin# </a> 1503204566Sedwin# ) 1504204566Sedwin# Paraguay changes its DST schedule, postponing the March rule to April and 1505204566Sedwin# modifying the October date. The decree reads: 1506204566Sedwin# ... 1507204566Sedwin# Art. 1. It is hereby established that from the second Sunday of the month of 1508204566Sedwin# April of this year (2010), the official time is to be set back 60 minutes, 1509204566Sedwin# and that on the first Sunday of the month of October, it is to be set 1510204566Sedwin# forward 60 minutes, in all the territory of the Paraguayan Republic. 1511204566Sedwin# ... 1512204887SedwinRule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1513204566SedwinRule Para 2010 max - Apr Sun>=8 0:00 0 - 151475267Swollman 15152742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15162742SwollmanZone America/Asuncion -3:50:40 - LMT 1890 151719878Swollman -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 151819878Swollman -4:00 - PYT 1972 Oct # Paraguay Time 151919878Swollman -3:00 - PYT 1974 Apr 152019878Swollman -4:00 Para PY%sT 15212742Swollman 15222742Swollman# Peru 1523136638Swollman# 1524136638Swollman# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1525136638Swollman# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1526149514Swollman# When we were in Peru in 1985-1986, they apparently switched over 1527136638Swollman# sometime between December 29 and January 3 while we were on the Amazon. 1528136638Swollman# 1529158421Swollman# From Paul Eggert (2006-03-22): 1530158421Swollman# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1531136638Swollman 15322742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 153319878SwollmanRule Peru 1938 only - Jan 1 0:00 1:00 S 153419878SwollmanRule Peru 1938 only - Apr 1 0:00 0 - 153519878SwollmanRule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 153619878SwollmanRule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1537136638SwollmanRule Peru 1986 1987 - Jan 1 0:00 1:00 S 1538136638SwollmanRule Peru 1986 1987 - Apr 1 0:00 0 - 153919878SwollmanRule Peru 1990 only - Jan 1 0:00 1:00 S 154019878SwollmanRule Peru 1990 only - Apr 1 0:00 0 - 1541158421Swollman# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 154258787SruRule Peru 1994 only - Jan 1 0:00 1:00 S 154358787SruRule Peru 1994 only - Apr 1 0:00 0 - 15442742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15452742SwollmanZone America/Lima -5:08:12 - LMT 1890 154686222Swollman -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 154719878Swollman -5:00 Peru PE%sT # Peru Time 15482742Swollman 15492742Swollman# South Georgia 15502742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15512742SwollmanZone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 155219878Swollman -2:00 - GST # South Georgia Time 15532742Swollman 15542742Swollman# South Sandwich Is 155558787Sru# uninhabited; scientific personnel have wintered 15562742Swollman 15572742Swollman# Suriname 15582742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15592742SwollmanZone America/Paramaribo -3:40:40 - LMT 1911 15602742Swollman -3:40:52 - PMT 1935 # Paramaribo Mean Time 15612742Swollman -3:40:36 - PMT 1945 Oct # The capital moved? 156219878Swollman -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 156319878Swollman -3:30 - SRT 1984 Oct # Suriname Time 156419878Swollman -3:00 - SRT 15652742Swollman 15662742Swollman# Trinidad and Tobago 15672742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15682742SwollmanZone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 15692742Swollman -4:00 - AST 15702742Swollman 15712742Swollman# Uruguay 1572149514Swollman# From Paul Eggert (1993-11-18): 15732742Swollman# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1574158421Swollman# From Shanks & Pottenger: 15752742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1576158421Swollman# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 157719878SwollmanRule Uruguay 1923 only - Oct 2 0:00 0:30 HS 157819878SwollmanRule Uruguay 1924 1926 - Apr 1 0:00 0 - 157919878SwollmanRule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 158019878SwollmanRule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1581158421Swollman# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 158219878SwollmanRule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 158319878SwollmanRule Uruguay 1936 only - Nov 1 0:00 0:30 HS 158419878SwollmanRule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1585158421Swollman# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 158619878SwollmanRule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 15872742Swollman# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1588158421Swollman# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1589158421SwollmanRule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1590158421SwollmanRule Uruguay 1942 only - Jan 1 0:00 0 - 159119878SwollmanRule Uruguay 1942 only - Dec 14 0:00 1:00 S 159219878SwollmanRule Uruguay 1943 only - Mar 14 0:00 0 - 159319878SwollmanRule Uruguay 1959 only - May 24 0:00 1:00 S 159419878SwollmanRule Uruguay 1959 only - Nov 15 0:00 0 - 159519878SwollmanRule Uruguay 1960 only - Jan 17 0:00 1:00 S 159619878SwollmanRule Uruguay 1960 only - Mar 6 0:00 0 - 159719878SwollmanRule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 159819878SwollmanRule Uruguay 1965 only - Sep 26 0:00 0 - 159919878SwollmanRule Uruguay 1966 1967 - Oct 31 0:00 0 - 160019878SwollmanRule Uruguay 1968 1970 - May 27 0:00 0:30 HS 160119878SwollmanRule Uruguay 1968 1970 - Dec 2 0:00 0 - 160219878SwollmanRule Uruguay 1972 only - Apr 24 0:00 1:00 S 160319878SwollmanRule Uruguay 1972 only - Aug 15 0:00 0 - 160419878SwollmanRule Uruguay 1974 only - Mar 10 0:00 0:30 HS 160519878SwollmanRule Uruguay 1974 only - Dec 22 0:00 1:00 S 160619878SwollmanRule Uruguay 1976 only - Oct 1 0:00 0 - 160719878SwollmanRule Uruguay 1977 only - Dec 4 0:00 1:00 S 160819878SwollmanRule Uruguay 1978 only - Apr 1 0:00 0 - 160919878SwollmanRule Uruguay 1979 only - Oct 1 0:00 1:00 S 161019878SwollmanRule Uruguay 1980 only - May 1 0:00 0 - 161119878SwollmanRule Uruguay 1987 only - Dec 14 0:00 1:00 S 161219878SwollmanRule Uruguay 1988 only - Mar 14 0:00 0 - 161319878SwollmanRule Uruguay 1988 only - Dec 11 0:00 1:00 S 161419878SwollmanRule Uruguay 1989 only - Mar 12 0:00 0 - 161519878SwollmanRule Uruguay 1989 only - Oct 29 0:00 1:00 S 1616158421Swollman# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 161758787Sru# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 161820094SwollmanRule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 161920094SwollmanRule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 162030711SwollmanRule Uruguay 1992 only - Oct 18 0:00 1:00 S 162120094SwollmanRule Uruguay 1993 only - Feb 28 0:00 0 - 1622136638Swollman# From Eduardo Cota (2004-09-20): 1623136638Swollman# The uruguayan government has decreed a change in the local time.... 1624136638Swollman# http://www.presidencia.gub.uy/decretos/2004091502.htm 1625149514SwollmanRule Uruguay 2004 only - Sep 19 0:00 1:00 S 1626149514Swollman# From Steffen Thorsen (2005-03-11): 1627149514Swollman# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1628149514Swollman# save energy ... it was postponed two weeks.... 1629149514Swollman# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1630149514SwollmanRule Uruguay 2005 only - Mar 27 2:00 0 - 1631153670Swollman# From Eduardo Cota (2005-09-27): 1632153670Swollman# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1633153670Swollman# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1634153670Swollman# 02:00 local time, official time in Uruguay will be at GMT -2. 1635153670SwollmanRule Uruguay 2005 only - Oct 9 2:00 1:00 S 1636153670SwollmanRule Uruguay 2006 only - Mar 12 2:00 0 - 1637163302Sru# From Jesper Norgaard Welen (2006-09-06): 1638163302Sru# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1639163302SruRule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1640163302SruRule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 16412742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16422742SwollmanZone America/Montevideo -3:44:44 - LMT 1898 Jun 28 164319878Swollman -3:44:44 - MMT 1920 May 1 # Montevideo MT 164419878Swollman -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 164519878Swollman -3:00 Uruguay UY%sT 16462742Swollman 16472742Swollman# Venezuela 1648172479Sedwin# 1649174242Sedwin# From John Stainforth (2007-11-28): 1650174242Sedwin# ... the change for Venezuela originally expected for 2007-12-31 has 1651174242Sedwin# been brought forward to 2007-12-09. The official announcement was 1652174242Sedwin# published today in the "Gaceta Oficial de la Republica Bolivariana 1653174242Sedwin# de Venezuela, numero 38.819" (official document for all laws or 1654174242Sedwin# resolution publication) 1655174242Sedwin# http://www.globovision.com/news.php?nid=72208 1656172479Sedwin 16572742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16582742SwollmanZone America/Caracas -4:27:44 - LMT 1890 165986222Swollman -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 166019878Swollman -4:30 - VET 1965 # Venezuela Time 1661174242Sedwin -4:00 - VET 2007 Dec 9 03:00 1662172479Sedwin -4:30 - VET 1663