#+
−
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
−
#+
−
# This code is free software; you can redistribute it and/or modify it+
−
# under the terms of the GNU General Public License version 2 only, as+
−
# published by the Free Software Foundation.  Oracle designates this+
−
# particular file as subject to the "Classpath" exception as provided+
−
# by Oracle in the LICENSE file that accompanied this code.+
−
#+
−
# This code is distributed in the hope that it will be useful, but WITHOUT+
−
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
−
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
−
# version 2 for more details (a copy is included in the LICENSE file that+
−
# accompanied this code).+
−
#+
−
# You should have received a copy of the GNU General Public License version+
−
# 2 along with this work; if not, write to the Free Software Foundation,+
−
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
−
#+
−
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
−
# or visit www.oracle.com if you need additional information or have any+
−
# questions.+
−
#+
−
# This file is in the public domain, so clarified as of+
−
# 2009-05-17 by Arthur David Olson.+
−
+
−
# This file is by no means authoritative; if you think you know better,+
−
# go ahead and edit the file (and please send any changes to+
−
# tz@iana.org for general use in the future).  For more, please see+
−
# the file CONTRIBUTING in the tz distribution.+
−
+
−
# From Paul Eggert (2014-10-31):+
−
#+
−
# Unless otherwise specified, the source for data through 1990 is:+
−
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),+
−
# San Diego: ACS Publications, Inc. (2003).+
−
# Unfortunately this book contains many errors and cites no sources.+
−
#+
−
# Gwillim Law writes that a good source+
−
# for recent time zone data is the International Air Transport+
−
# Association's Standard Schedules Information Manual (IATA SSIM),+
−
# published semiannually.  Law sent in several helpful summaries+
−
# of the IATA's data after 1990.  Except where otherwise noted,+
−
# IATA SSIM is the source for entries after 1990.+
−
#+
−
# For data circa 1899, a common source is:+
−
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.+
−
# http://www.jstor.org/stable/1774359+
−
#+
−
# Earlier editions of these tables used the North American style (e.g. ARST and+
−
# ARDT for Argentine Standard and Daylight Time), but the following quote+
−
# suggests that it's better to use European style (e.g. ART and ARST).+
−
#	I suggest the use of _Summer time_ instead of the more cumbersome+
−
#	_daylight-saving time_.  _Summer time_ seems to be in general use+
−
#	in Europe and South America.+
−
#	-- E O Cutler, _New York Times_ (1937-02-14), quoted in+
−
#	H L Mencken, _The American Language: Supplement I_ (1960), p 466+
−
#+
−
# Earlier editions of these tables also used the North American style+
−
# for time zones in Brazil, but this was incorrect, as Brazilians say+
−
# "summer time".  Reinaldo Goulart, a São Paulo businessman active in+
−
# the railroad sector, writes (1999-07-06):+
−
#	The subject of time zones is currently a matter of discussion/debate in+
−
#	Brazil.  Let's say that "the Brasília time" is considered the+
−
#	"official time" because Brasília is the capital city.+
−
#	The other three time zones are called "Brasília time "minus one" or+
−
#	"plus one" or "plus two".  As far as I know there is no such+
−
#	name/designation as "Eastern Time" or "Central Time".+
−
# So I invented the following (English-language) abbreviations for now.+
−
# Corrections are welcome!+
−
#		std	dst+
−
#	-2:00	FNT	FNST	Fernando de Noronha+
−
#	-3:00	BRT	BRST	Brasília+
−
#	-4:00	AMT	AMST	Amazon+
−
#	-5:00	ACT	ACST	Acre+
−
+
−
###############################################################################+
−
+
−
###############################################################################+
−
+
−
# Argentina+
−
+
−
# From Bob Devine (1988-01-28):+
−
# Argentina: first Sunday in October to first Sunday in April since 1976.+
−
# Double Summer time from 1969 to 1974.  Switches at midnight.+
−
+
−
# From U. S. Naval Observatory (1988-01-19):+
−
# ARGENTINA           3 H BEHIND   UTC+
−
+
−
# From Hernan G. Otero (1995-06-26):+
−
# I am sending modifications to the Argentine time zone table...+
−
# AR was chosen because they are the ISO letters that represent Argentina.+
−
+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	Arg	1930	only	-	Dec	 1	0:00	1:00	S+
−
Rule	Arg	1931	only	-	Apr	 1	0:00	0	-+
−
Rule	Arg	1931	only	-	Oct	15	0:00	1:00	S+
−
Rule	Arg	1932	1940	-	Mar	 1	0:00	0	-+
−
Rule	Arg	1932	1939	-	Nov	 1	0:00	1:00	S+
−
Rule	Arg	1940	only	-	Jul	 1	0:00	1:00	S+
−
Rule	Arg	1941	only	-	Jun	15	0:00	0	-+
−
Rule	Arg	1941	only	-	Oct	15	0:00	1:00	S+
−
Rule	Arg	1943	only	-	Aug	 1	0:00	0	-+
−
Rule	Arg	1943	only	-	Oct	15	0:00	1:00	S+
−
Rule	Arg	1946	only	-	Mar	 1	0:00	0	-+
−
Rule	Arg	1946	only	-	Oct	 1	0:00	1:00	S+
−
Rule	Arg	1963	only	-	Oct	 1	0:00	0	-+
−
Rule	Arg	1963	only	-	Dec	15	0:00	1:00	S+
−
Rule	Arg	1964	1966	-	Mar	 1	0:00	0	-+
−
Rule	Arg	1964	1966	-	Oct	15	0:00	1:00	S+
−
Rule	Arg	1967	only	-	Apr	 2	0:00	0	-+
−
Rule	Arg	1967	1968	-	Oct	Sun>=1	0:00	1:00	S+
−
Rule	Arg	1968	1969	-	Apr	Sun>=1	0:00	0	-+
−
Rule	Arg	1974	only	-	Jan	23	0:00	1:00	S+
−
Rule	Arg	1974	only	-	May	 1	0:00	0	-+
−
Rule	Arg	1988	only	-	Dec	 1	0:00	1:00	S+
−
#+
−
# From Hernan G. Otero (1995-06-26):+
−
# These corrections were contributed by InterSoft Argentina S.A.,+
−
# obtaining the data from the:+
−
# Talleres de Hidrografía Naval Argentina+
−
# (Argentine Naval Hydrography Institute)+
−
Rule	Arg	1989	1993	-	Mar	Sun>=1	0:00	0	-+
−
Rule	Arg	1989	1992	-	Oct	Sun>=15	0:00	1:00	S+
−
#+
−
# From Hernan G. Otero (1995-06-26):+
−
# From this moment on, the law that mandated the daylight saving+
−
# time corrections was derogated and no more modifications+
−
# to the time zones (for daylight saving) are now made.+
−
#+
−
# From Rives McDow (2000-01-10):+
−
# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,+
−
# which did not result in the switch of a time zone, as they stayed 9 hours+
−
# from the International Date Line.+
−
Rule	Arg	1999	only	-	Oct	Sun>=1	0:00	1:00	S+
−
# From Paul Eggert (2007-12-28):+
−
# DST was set to expire on March 5, not March 3, but since it was converted+
−
# to standard time on March 3 it's more convenient for us to pretend that+
−
# it ended on March 3.+
−
Rule	Arg	2000	only	-	Mar	3	0:00	0	-+
−
#+
−
# From Peter Gradelski via Steffen Thorsen (2000-03-01):+
−
# We just checked with our São Paulo office and they say the government of+
−
# Argentina decided not to become one of the countries that go on or off DST.+
−
# So Buenos Aires should be -3 hours from GMT at all times.+
−
#+
−
# From Fabián L. Arce Jofré (2000-04-04):+
−
# The law that claimed DST for Argentina was derogated by President Fernando+
−
# de la Rúa on March 2, 2000, because it would make people spend more energy+
−
# in the winter time, rather than less.  The change took effect on March 3.+
−
#+
−
# From Mariano Absatz (2001-06-06):+
−
# one of the major newspapers here in Argentina said that the 1999+
−
# Timezone Law (which never was effectively applied) will (would?) be+
−
# in effect.... The article is at+
−
# http://ar.clarin.com/diario/2001-06-06/e-01701.htm+
−
# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted+
−
# 1999-09-17, and published 1999-09-21.  The official publication is at:+
−
# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF+
−
# Regretfully, you have to subscribe (and pay) for the on-line version....+
−
#+
−
# (2001-06-12):+
−
# the timezone for Argentina will not change next Sunday.+
−
# Apparently it will do so on Sunday 24th....+
−
# http://ar.clarin.com/diario/2001-06-12/s-03501.htm+
−
#+
−
# (2001-06-25):+
−
# Last Friday (yes, the last working day before the date of the change), the+
−
# Senate annulled the 1999 law that introduced the changes later postponed.+
−
# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm+
−
# It remains the vote of the Deputies..., but it will be the same....+
−
# This kind of things had always been done this way in Argentina.+
−
# We are still -03:00 all year round in all of the country.+
−
#+
−
# From Steffen Thorsen (2007-12-21):+
−
# A user (Leonardo Chaim) reported that Argentina will adopt DST....+
−
# all of the country (all Zone-entries) are affected.  News reports like+
−
# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate+
−
# that Argentina will use DST next year as well, from October to+
−
# March, although exact rules are not given.+
−
#+
−
# From Jesper Nørgaard Welen (2007-12-26)+
−
# The last hurdle of Argentina DST is over, the proposal was approved in+
−
# the lower chamber too (Diputados) with a vote 192 for and 2 against.+
−
# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to+
−
# the original scanned proposal, where the dates and the zero hours are+
−
# clear and unambiguous...This is the article about final approval:+
−
# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996+
−
#+
−
# From Paul Eggert (2007-12-22):+
−
# For dates after mid-2008, the following rules are my guesses and+
−
# are quite possibly wrong, but are more likely than no DST at all.+
−
+
−
# From Alexander Krivenyshev (2008-09-05):+
−
# As per message from Carlos Alberto Fonseca Arauz (Nicaragua),+
−
# Argentina will start DST on Sunday October 19, 2008.+
−
#+
−
# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html+
−
# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)+
−
+
−
# From Rodrigo Severo (2008-10-06):+
−
# Here is some info available at a Gentoo bug related to TZ on Argentina's DST:+
−
# ...+
−
# ------- Comment #1 from [jmdocile]  2008-10-06 16:28 0000 -------+
−
# Hi, there is a problem with timezone-data-2008e and maybe with+
−
# timezone-data-2008f+
−
# Argentinian law [Number] 25.155 is no longer valid.+
−
# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm+
−
# The new one is law [Number] 26.350+
−
# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm+
−
# So there is no summer time in Argentina for now.+
−
+
−
# From Mariano Absatz (2008-10-20):+
−
# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST+
−
# in Argentina from 2008-10-19 until 2009-03-15.+
−
# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01+
−
#+
−
+
−
# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer+
−
# 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La+
−
# Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego+
−
# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01+
−
#+
−
# Press release 235 dated Saturday October 18th, from the Government of the+
−
# Province of Jujuy saying it will not apply DST either (even when it was not+
−
# included in Decree 1705/2008).+
−
# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc+
−
+
−
# From fullinet (2009-10-18):+
−
# As announced in+
−
# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356+
−
# (an official .gob.ar) under title: "Sin Cambio de Hora"+
−
# (English: "No hour change").+
−
#+
−
# "Por el momento, el Gobierno Nacional resolvió no modificar la hora+
−
# oficial, decisión que estaba en estudio para su implementación el+
−
# domingo 18 de octubre. Desde el Ministerio de Planificación se anunció+
−
# que la Argentina hoy, en estas condiciones meteorológicas, no necesita+
−
# la modificación del huso horario, ya que 2009 nos encuentra con+
−
# crecimiento en la producción y distribución energética."+
−
+
−
Rule	Arg	2007	only	-	Dec	30	0:00	1:00	S+
−
Rule	Arg	2008	2009	-	Mar	Sun>=15	0:00	0	-+
−
Rule	Arg	2008	only	-	Oct	Sun>=15	0:00	1:00	S+
−
+
−
# From Mariano Absatz (2004-05-21):+
−
# Today it was officially published that the Province of Mendoza is changing+
−
# its timezone this winter... starting tomorrow night....+
−
# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf+
−
# From Paul Eggert (2004-05-24):+
−
# It's Law No. 7,210.  This change is due to a public power emergency, so for+
−
# now we'll assume it's for this year only.+
−
#+
−
# From Paul Eggert (2014-08-09):+
−
# Hora de verano para la República Argentina+
−
# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html+
−
# says that standard time in Argentina from 1894-10-31+
−
# to 1920-05-01 was -4:16:48.25.  Go with this more-precise value+
−
# over Shanks & Pottenger.+
−
#+
−
# From Mariano Absatz (2004-06-05):+
−
# These media articles from a major newspaper mostly cover the current state:+
−
# http://www.lanacion.com.ar/04/05/27/de_604825.asp+
−
# http://www.lanacion.com.ar/04/05/28/de_605203.asp+
−
#+
−
# The following eight (8) provinces pulled clocks back to UTC-04:00 at+
−
# midnight Monday May 31st. (that is, the night between 05/31 and 06/01).+
−
# Apparently, all nine provinces would go back to UTC-03:00 at the same+
−
# time in October 17th.+
−
#+
−
# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,+
−
# Tierra del Fuego, Tucumán.+
−
#+
−
# From Mariano Absatz (2004-06-14):+
−
# ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00+
−
# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's+
−
# annoyance with the change is much higher than the power savings obtained....+
−
#+
−
# From Gwillim Law (2004-06-14):+
−
# http://www.lanacion.com.ar/04/06/10/de_609078.asp ...+
−
#     "The time change in Tierra del Fuego was a conflicted decision from+
−
#   the start.  The government had decreed that the measure would take+
−
#   effect on June 1, but a normative error forced the new time to begin+
−
#   three days earlier, from a Saturday to a Sunday....+
−
# Our understanding was that the change was originally scheduled to take place+
−
# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other+
−
# provinces).  Sunday was May 30, only two days earlier.  So the article+
−
# contains a contradiction.  I would give more credence to the Saturday/Sunday+
−
# date than the "three days earlier" phrase, and conclude that Tierra del+
−
# Fuego set its clocks back at 2004-05-30 00:00.+
−
#+
−
# From Steffen Thorsen (2004-10-05):+
−
# The previous law 7210 which changed the province of Mendoza's time zone+
−
# back in May have been modified slightly in a new law 7277, which set the+
−
# new end date to 2004-09-26 (original date was 2004-10-17).+
−
# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf+
−
#+
−
# From Mariano Absatz (2004-10-05):+
−
# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between+
−
# Sunday, May 30th and Monday, May 31st.  It changed back to UTC-03:00+
−
# at midnight between Saturday, July 24th and Sunday, July 25th....+
−
# http://www.sanjuan.gov.ar/prensa/archivo/000329.html+
−
# http://www.sanjuan.gov.ar/prensa/archivo/000426.html+
−
# http://www.sanjuan.gov.ar/prensa/archivo/000441.html+
−
+
−
# From Alex Krivenyshev (2008-01-17):+
−
# Here are articles that Argentina Province San Luis is planning to end DST+
−
# as earlier as upcoming Monday January 21, 2008 or February 2008:+
−
#+
−
# Provincia argentina retrasa reloj y marca diferencia con resto del país+
−
# (Argentine Province delayed clock and mark difference with the rest of the+
−
# country)+
−
# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel+
−
#+
−
# Es inminente que en San Luis atrasen una hora los relojes+
−
# (It is imminent in San Luis clocks one hour delay)+
−
# http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html+
−
# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html+
−
+
−
# From Jesper Nørgaard Welen (2008-01-18):+
−
# The page of the San Luis provincial government+
−
# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812+
−
# confirms what Alex Krivenyshev has earlier sent to the tz+
−
# emailing list about that San Luis plans to return to standard+
−
# time much earlier than the rest of the country. It also+
−
# confirms that upon request the provinces San Juan and Mendoza+
−
# refused to follow San Luis in this change.+
−
#+
−
# The change is supposed to take place Monday the 21st at 0:00+
−
# hours. As far as I understand it if this goes ahead, we need+
−
# a new timezone for San Luis (although there are also documented+
−
# independent changes in the southamerica file of San Luis in+
−
# 1990 and 1991 which has not been confirmed).+
−
+
−
# From Jesper Nørgaard Welen (2008-01-25):+
−
# Unfortunately the below page has become defunct, about the San Luis+
−
# time change. Perhaps because it now is part of a group of pages "Most+
−
# important pages of 2008."+
−
#+
−
# You can use+
−
# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834+
−
# instead it seems. Or use "Buscador" from the main page of the San Luis+
−
# government, and fill in "huso" and click OK, and you will get 3 pages+
−
# from which the first one is identical to the above.+
−
+
−
# From Mariano Absatz (2008-01-28):+
−
# I can confirm that the Province of San Luis (and so far only that+
−
# province) decided to go back to UTC-3 effective midnight Jan 20th 2008+
−
# (that is, Monday 21st at 0:00 is the time the clocks were delayed back+
−
# 1 hour), and they intend to keep UTC-3 as their timezone all year round+
−
# (that is, unless they change their mind any minute now).+
−
#+
−
# So we'll have to add yet another city to 'southamerica' (I think San+
−
# Luis city is the mos populated city in the Province, so it'd be+
−
# America/Argentina/San_Luis... of course I can't remember if San Luis's+
−
# history of particular changes goes along with Mendoza or San Juan :-(+
−
# (I only remember not being able to collect hard facts about San Luis+
−
# back in 2004, when these provinces changed to UTC-4 for a few days, I+
−
# mailed them personally and never got an answer).+
−
+
−
# From Paul Eggert (2014-08-12):+
−
# Unless otherwise specified, data entries are from Shanks & Pottenger through+
−
# 1992, from the IATA otherwise.  As noted below, Shanks & Pottenger say that+
−
# America/Cordoba split into 6 subregions during 1991/1992, one of which+
−
# was America/San_Luis, but we haven't verified this yet so for now we'll+
−
# keep America/Cordoba a single region rather than splitting it into the+
−
# other 5 subregions.+
−
+
−
# From Mariano Absatz (2009-03-13):+
−
# Yesterday (with our usual 2-day notice) the Province of San Luis+
−
# decided that next Sunday instead of "staying" @utc-03:00 they will go+
−
# to utc-04:00 until the second Saturday in October...+
−
#+
−
# The press release is at+
−
# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102+
−
# (I couldn't find the decree, but www.sanluis.gov.ar+
−
# is the official page for the Province Government.)+
−
#+
−
# There's also a note in only one of the major national papers ...+
−
# http://www.lanacion.com.ar/nota.asp?nota_id=1107912+
−
#+
−
# The press release says [quick and dirty translation]:+
−
# ... announced that next Sunday, at 00:00, Puntanos (the San Luis+
−
# inhabitants) will have to turn back one hour their clocks+
−
#+
−
# Since then, San Luis will establish its own Province timezone. Thus,+
−
# during 2009, this timezone change will run from 00:00 the third Sunday+
−
# in March until 24:00 of the second Saturday in October.+
−
+
−
# From Mariano Absatz (2009-10-16):+
−
# ...the Province of San Luis is a case in itself.+
−
#+
−
# The Law at+
−
# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276+
−
# is ambiguous because establishes a calendar from the 2nd Sunday in+
−
# October at 0:00 thru the 2nd Saturday in March at 24:00 and the+
−
# complement of that starting on the 2nd Sunday of March at 0:00 and+
−
# ending on the 2nd Saturday of March at 24:00.+
−
#+
−
# This clearly breaks every time the 1st of March or October is a Sunday.+
−
#+
−
# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd+
−
# Sunday of October and March.+
−
#+
−
# The problem is that the changes in the rest of the Provinces that did+
−
# change in 2007/2008, were made according to the Federal Law and Decrees+
−
# that did so on the 3rd Sunday of October and March.+
−
#+
−
# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday+
−
# (October 11th) at 0:00.+
−
#+
−
# So I guess a new set of rules, besides "Arg", must be made and the last+
−
# America/Argentina/San_Luis entries should change to use these...+
−
#+
−
# I'm enclosing a patch that does what I say... regretfully, the San Luis+
−
# timezone must be called "WART/WARST" even when most of the time (like,+
−
# right now) WARST == ART... that is, since last Sunday, all the country+
−
# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest+
−
# of the country calls it "ART".+
−
# ...+
−
+
−
# From Alexander Krivenyshev (2010-04-09):+
−
# According to news reports from El Diario de la República Province San+
−
# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time+
−
# after April 11, 2010 - will continue to have same time as rest of+
−
# Argentina (UTC-3) (no DST).+
−
#+
−
# Confirmaron la prórroga del huso horario de verano (Spanish)+
−
# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9+
−
# or (some English translation):+
−
# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html+
−
+
−
# From Mariano Absatz (2010-04-12):+
−
# yes...I can confirm this...and given that San Luis keeps calling+
−
# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"+
−
# rules...San Luis is still using "Western ARgentina Time" and it got+
−
# stuck on Summer daylight savings time even though the summer is over.+
−
+
−
# From Paul Eggert (2013-09-05):+
−
# Perhaps San Luis operates on the legal fiction that it is at UTC-4+
−
# with perpetual summer time, but ordinary usage typically seems to+
−
# just say it's at UTC-3; see, for example,+
−
# http://es.wikipedia.org/wiki/Hora_oficial_argentina+
−
# We've documented similar situations as being plain changes to+
−
# standard time, so let's do that here too.  This does not change UTC+
−
# offsets, only tm_isdst and the time zone abbreviations.  One minor+
−
# plus is that this silences a zic complaint that there's no POSIX TZ+
−
# setting for time stamps past 2038.+
−
+
−
# From Paul Eggert (2013-02-21):+
−
# Milne says Córdoba time was -4:16:48.2.  Round to the nearest second.+
−
+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
#+
−
# Buenos Aires (BA), Capital Federal (CF),+
−
Zone America/Argentina/Buenos_Aires -3:53:48 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	Arg	AR%sT+
−
#+
−
# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),+
−
# Chaco (CC), Formosa (FM), Santiago del Estero (SE)+
−
#+
−
# Shanks & Pottenger also make the following claims, which we haven't verified:+
−
# - Formosa switched to -3:00 on 1991-01-07.+
−
# - Misiones switched to -3:00 on 1990-12-29.+
−
# - Chaco switched to -3:00 on 1991-01-04.+
−
# - Santiago del Estero switched to -4:00 on 1991-04-01,+
−
#   then to -3:00 on 1991-04-26.+
−
#+
−
Zone America/Argentina/Cordoba -4:16:48 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  3+
−
			-4:00	-	WART	1991 Oct 20+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	Arg	AR%sT+
−
#+
−
# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)+
−
Zone America/Argentina/Salta -4:21:40 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  3+
−
			-4:00	-	WART	1991 Oct 20+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# Tucumán (TM)+
−
Zone America/Argentina/Tucuman -4:20:52 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  3+
−
			-4:00	-	WART	1991 Oct 20+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 Jun  1+
−
			-4:00	-	WART	2004 Jun 13+
−
			-3:00	Arg	AR%sT+
−
#+
−
# La Rioja (LR)+
−
Zone America/Argentina/La_Rioja -4:27:24 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  1+
−
			-4:00	-	WART	1991 May  7+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 Jun  1+
−
			-4:00	-	WART	2004 Jun 20+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# San Juan (SJ)+
−
Zone America/Argentina/San_Juan -4:34:04 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  1+
−
			-4:00	-	WART	1991 May  7+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 May 31+
−
			-4:00	-	WART	2004 Jul 25+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# Jujuy (JY)+
−
Zone America/Argentina/Jujuy -4:21:12 -	LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1990 Mar  4+
−
			-4:00	-	WART	1990 Oct 28+
−
			-4:00	1:00	WARST	1991 Mar 17+
−
			-4:00	-	WART	1991 Oct  6+
−
			-3:00	1:00	ARST	1992+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# Catamarca (CT), Chubut (CH)+
−
Zone America/Argentina/Catamarca -4:23:08 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1991 Mar  3+
−
			-4:00	-	WART	1991 Oct 20+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 Jun  1+
−
			-4:00	-	WART	2004 Jun 20+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# Mendoza (MZ)+
−
Zone America/Argentina/Mendoza -4:35:16 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1990 Mar  4+
−
			-4:00	-	WART	1990 Oct 15+
−
			-4:00	1:00	WARST	1991 Mar  1+
−
			-4:00	-	WART	1991 Oct 15+
−
			-4:00	1:00	WARST	1992 Mar  1+
−
			-4:00	-	WART	1992 Oct 18+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 May 23+
−
			-4:00	-	WART	2004 Sep 26+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# San Luis (SL)+
−
+
−
Rule	SanLuis	2008	2009	-	Mar	Sun>=8	0:00	0	-+
−
Rule	SanLuis	2007	2008	-	Oct	Sun>=8	0:00	1:00	S+
−
+
−
Zone America/Argentina/San_Luis -4:25:24 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1990+
−
			-3:00	1:00	ARST	1990 Mar 14+
−
			-4:00	-	WART	1990 Oct 15+
−
			-4:00	1:00	WARST	1991 Mar  1+
−
			-4:00	-	WART	1991 Jun  1+
−
			-3:00	-	ART	1999 Oct  3+
−
			-4:00	1:00	WARST	2000 Mar  3+
−
			-3:00	-	ART	2004 May 31+
−
			-4:00	-	WART	2004 Jul 25+
−
			-3:00	Arg	AR%sT	2008 Jan 21+
−
			-4:00	SanLuis	WAR%sT	2009 Oct 11+
−
			-3:00	-	ART+
−
#+
−
# Santa Cruz (SC)+
−
Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 Jun  1+
−
			-4:00	-	WART	2004 Jun 20+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
#+
−
# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)+
−
Zone America/Argentina/Ushuaia -4:33:12 - LMT	1894 Oct 31+
−
			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time+
−
			-4:00	-	ART	1930 Dec+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1999 Oct  3+
−
			-4:00	Arg	AR%sT	2000 Mar  3+
−
			-3:00	-	ART	2004 May 30+
−
			-4:00	-	WART	2004 Jun 20+
−
			-3:00	Arg	AR%sT	2008 Oct 18+
−
			-3:00	-	ART+
−
+
−
# Aruba+
−
Link America/Curacao America/Aruba+
−
+
−
# Bolivia+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/La_Paz	-4:32:36 -	LMT	1890+
−
			-4:32:36 -	CMT	1931 Oct 15 # Calamarca MT+
−
			-4:32:36 1:00	BOST	1932 Mar 21 # Bolivia ST+
−
			-4:00	-	BOT	# Bolivia Time+
−
+
−
# Brazil+
−
+
−
# From Paul Eggert (1993-11-18):+
−
# The mayor of Rio recently attempted to change the time zone rules+
−
# just in his city, in order to leave more summer time for the tourist trade.+
−
# The rule change lasted only part of the day;+
−
# the federal government refused to follow the city's rules, and business+
−
# was in a chaos, so the mayor backed down that afternoon.+
−
+
−
# From IATA SSIM (1996-02):+
−
# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),+
−
# Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),+
−
# Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),+
−
# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].+
−
# [The last three states are new to this issue of the IATA SSIM.]+
−
+
−
# From Gwillim Law (1996-10-07):+
−
# Geography, history (Tocantins was part of Goiás until 1989), and other+
−
# sources of time zone information lead me to believe that AL, SE, and TO were+
−
# always in BR1, and so the only change was whether or not they observed DST....+
−
# The earliest issue of the SSIM I have is 2/91.  Each issue from then until+
−
# 9/95 says that DST is observed only in the ten states I quoted from 9/95,+
−
# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2+
−
# (UTC-4)....  The other two time zones given for Brazil are BR3, which is+
−
# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is+
−
# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's+
−
# become part of the state of Pernambuco).  The boundary between BR1 and BR2+
−
# has never been clearly stated.  They've simply been called East and West.+
−
# However, some conclusions can be drawn from another IATA manual: the Airline+
−
# Coding Directory, which lists close to 400 airports in Brazil.  For each+
−
# airport it gives a time zone which is coded to the SSIM.  From that+
−
# information, I'm led to conclude that the states of Amapá (AP), Ceará (CE),+
−
# Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do+
−
# Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST.+
−
+
−
# From Marcos Tadeu (1998-09-27):+
−
# Brazilian official page <http://pcdsh01.on.br/verao1.html>+
−
+
−
# From Jesper Nørgaard (2000-11-03):+
−
# [For an official list of which regions in Brazil use which time zones, see:]+
−
# http://pcdsh01.on.br/Fusbr.htm+
−
# http://pcdsh01.on.br/Fusbrhv.htm+
−
+
−
# From Celso Doria via David Madeo (2002-10-09):+
−
# The reason for the delay this year has to do with elections in Brazil.+
−
#+
−
# Unlike in the United States, elections in Brazil are 100% computerized and+
−
# the results are known almost immediately.  Yesterday, it was the first+
−
# round of the elections when 115 million Brazilians voted for President,+
−
# Governor, Senators, Federal Deputies, and State Deputies.  Nobody is+
−
# counting (or re-counting) votes anymore and we know there will be a second+
−
# round for the Presidency and also for some Governors.  The 2nd round will+
−
# take place on October 27th.+
−
#+
−
# The reason why the DST will only begin November 3rd is that the thousands+
−
# of electoral machines used cannot have their time changed, and since the+
−
# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,+
−
# the Government decided to postpone DST, instead of changing the Constitution+
−
# (maybe, for the next elections, it will be possible to change the clock)...+
−
+
−
# From Rodrigo Severo (2004-10-04):+
−
# It's just the biannual change made necessary by the much hyped, supposedly+
−
# modern Brazilian eletronic voting machines which, apparently, can't deal+
−
# with a time change between the first and the second rounds of the elections.+
−
+
−
# From Steffen Thorsen (2007-09-20):+
−
# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:+
−
# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975+
−
+
−
# From Paul Schulze (2008-06-24):+
−
# ...by law number 11.662 of April 24, 2008 (published in the "Diario+
−
# Oficial da União"...) in Brazil there are changes in the timezones,+
−
# effective today (00:00am at June 24, 2008) as follows:+
−
#+
−
# a) The timezone UTC+5 is extinguished, with all the Acre state and the+
−
# part of the Amazonas state that had this timezone now being put to the+
−
# timezone UTC+4+
−
# b) The whole Pará state now is put at timezone UTC+3, instead of just+
−
# part of it, as was before.+
−
#+
−
# This change follows a proposal of senator Tiao Viana of Acre state, that+
−
# proposed it due to concerns about open television channels displaying+
−
# programs inappropriate to youths in the states that had the timezone+
−
# UTC+5 too early in the night. In the occasion, some more corrections+
−
# were proposed, trying to unify the timezones of any given state. This+
−
# change modifies timezone rules defined in decree 2.784 of 18 June,+
−
# 1913.+
−
+
−
# From Rodrigo Severo (2008-06-24):+
−
# Just correcting the URL:+
−
# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008+
−
#+
−
# As a result of the above Decree I believe the America/Rio_Branco+
−
# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall+
−
# be created to represent the...west side of the Pará State. I+
−
# suggest this new timezone be called Santarem as the most+
−
# important/populated city in the affected area.+
−
#+
−
# This new timezone would be the same as the Rio_Branco timezone up to+
−
# the 2008/06/24 change which would be to UTC-3 instead of UTC-4.+
−
+
−
# From Alex Krivenyshev (2008-06-24):+
−
# This is a quick reference page for New and Old Brazil Time Zones map.+
−
# http://www.worldtimezone.com/brazil-time-new-old.php+
−
#+
−
# - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05+
−
# (state Acre and the part of the Amazonas will be UTC/GMT-04) - western+
−
# part of Par state is moving to one timezone UTC-03 (from UTC-04).+
−
+
−
# From Paul Eggert (2002-10-10):+
−
# The official decrees referenced below are mostly taken from+
−
# Decretos sobre o Horário de Verão no Brasil.+
−
# http://pcdsh01.on.br/DecHV.html+
−
+
−
# From Steffen Thorsen (2008-08-29):+
−
# As announced by the government and many newspapers in Brazil late+
−
# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and+
−
# it will end on 2009-02-15 (current rule for Brazil is fine). Based on+
−
# past years experience with the elections, there was a good chance that+
−
# the start was postponed to November, but it did not happen this year.+
−
#+
−
# It has not yet been posted to http://pcdsh01.on.br/DecHV.html+
−
#+
−
# An official page about it:+
−
# http://www.mme.gov.br/site/news/detail.do?newsId=16722+
−
# Note that this link does not always work directly, but must be accessed+
−
# by going to+
−
# http://www.mme.gov.br/first+
−
#+
−
# One example link that works directly:+
−
# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54+
−
# (Portuguese)+
−
#+
−
# We have a written a short article about it as well:+
−
# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html+
−
#+
−
# From Alexander Krivenyshev (2011-10-04):+
−
# State Bahia will return to Daylight savings time this year after 8 years off.+
−
# The announcement was made by Governor Jaques Wagner in an interview to a+
−
# television station in Salvador.+
−
+
−
# In Portuguese:+
−
# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html+
−
# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html+
−
+
−
# From Guilherme Bernardes Rodrigues (2011-10-07):+
−
# There is news in the media, however there is still no decree about it.+
−
# I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the+
−
# official agency about time in Brazil, and she confirmed that the old rule is+
−
# still in force.+
−
+
−
# From Guilherme Bernardes Rodrigues (2011-10-14)+
−
# It's official, the President signed a decree that includes Bahia in summer+
−
# time.+
−
#	 [ and in a second message (same day): ]+
−
# I found the decree.+
−
#+
−
# DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011+
−
# Link :+
−
# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6+
−
+
−
# From Kelley Cook (2012-10-16):+
−
# The governor of state of Bahia in Brazil announced on Thursday that+
−
# due to public pressure, he is reversing the DST policy they implemented+
−
# last year and will not be going to Summer Time on October 21st....+
−
# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia+
−
+
−
# From Rodrigo Severo (2012-10-16):+
−
# Tocantins state will have DST.+
−
# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html+
−
+
−
# From Steffen Thorsen (2013-09-20):+
−
# Tocantins in Brazil is very likely not to observe DST from October....+
−
# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto+
−
# We will keep this article updated when this is confirmed:+
−
# http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html+
−
+
−
# From Steffen Thorsen (2013-10-17):+
−
# http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html+
−
# Senator Jorge Viana announced that Acre will change time zone on November 10.+
−
# He did not specify the time of the change, nor if western parts of Amazonas+
−
# will change as well.+
−
#+
−
# From Paul Eggert (2013-10-17):+
−
# For now, assume western Amazonas will change as well.+
−
+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)+
−
# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)+
−
Rule	Brazil	1931	only	-	Oct	 3	11:00	1:00	S+
−
Rule	Brazil	1932	1933	-	Apr	 1	 0:00	0	-+
−
Rule	Brazil	1932	only	-	Oct	 3	 0:00	1:00	S+
−
# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)+
−
# revoked DST.+
−
# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)+
−
# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)+
−
Rule	Brazil	1949	1952	-	Dec	 1	 0:00	1:00	S+
−
Rule	Brazil	1950	only	-	Apr	16	 1:00	0	-+
−
Rule	Brazil	1951	1952	-	Apr	 1	 0:00	0	-+
−
# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)+
−
Rule	Brazil	1953	only	-	Mar	 1	 0:00	0	-+
−
# Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30)+
−
# revoked DST.+
−
# Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18)+
−
# established DST from 1963-10-23 00:00 to 1964-02-29 00:00+
−
# in SP, RJ, GB, MG, ES, due to the prolongation of the drought.+
−
# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)+
−
# extended the above decree to all of the national territory on 12-09.+
−
Rule	Brazil	1963	only	-	Dec	 9	 0:00	1:00	S+
−
# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)+
−
# extended summer time by one day to 1964-03-01 00:00 (start of school).+
−
Rule	Brazil	1964	only	-	Mar	 1	 0:00	0	-+
−
# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27)+
−
Rule	Brazil	1965	only	-	Jan	31	 0:00	1:00	S+
−
Rule	Brazil	1965	only	-	Mar	31	 0:00	0	-+
−
# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22)+
−
Rule	Brazil	1965	only	-	Dec	 1	 0:00	1:00	S+
−
# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)+
−
Rule	Brazil	1966	1968	-	Mar	 1	 0:00	0	-+
−
Rule	Brazil	1966	1967	-	Nov	 1	 0:00	1:00	S+
−
# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)+
−
# revoked DST.+
−
# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27)+
−
Rule	Brazil	1985	only	-	Nov	 2	 0:00	1:00	S+
−
# Decree 92,310 (1986-01-21)+
−
# Decree 92,463 (1986-03-13)+
−
Rule	Brazil	1986	only	-	Mar	15	 0:00	0	-+
−
# Decree 93,316 (1986-10-01)+
−
Rule	Brazil	1986	only	-	Oct	25	 0:00	1:00	S+
−
Rule	Brazil	1987	only	-	Feb	14	 0:00	0	-+
−
# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22)+
−
Rule	Brazil	1987	only	-	Oct	25	 0:00	1:00	S+
−
Rule	Brazil	1988	only	-	Feb	 7	 0:00	0	-+
−
# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)+
−
# except for the states of AC, AM, PA, RR, RO, and AP (then a territory)+
−
Rule	Brazil	1988	only	-	Oct	16	 0:00	1:00	S+
−
Rule	Brazil	1989	only	-	Jan	29	 0:00	0	-+
−
# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)+
−
# with the same exceptions+
−
Rule	Brazil	1989	only	-	Oct	15	 0:00	1:00	S+
−
Rule	Brazil	1990	only	-	Feb	11	 0:00	0	-+
−
# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)+
−
# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.+
−
# Decree 99,629 (1990-10-19) adds BA, MT.+
−
Rule	Brazil	1990	only	-	Oct	21	 0:00	1:00	S+
−
Rule	Brazil	1991	only	-	Feb	17	 0:00	0	-+
−
# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)+
−
# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.+
−
Rule	Brazil	1991	only	-	Oct	20	 0:00	1:00	S+
−
Rule	Brazil	1992	only	-	Feb	 9	 0:00	0	-+
−
# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)+
−
# adopted by same states.+
−
Rule	Brazil	1992	only	-	Oct	25	 0:00	1:00	S+
−
Rule	Brazil	1993	only	-	Jan	31	 0:00	0	-+
−
# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)+
−
# adopted by same states, plus AM.+
−
# Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22;+
−
# web page corrected 2004-01-07) adopted by same states, minus AM.+
−
# Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14)+
−
# adopted by same states, plus MT and TO.+
−
# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)+
−
# adds AL, SE.+
−
Rule	Brazil	1993	1995	-	Oct	Sun>=11	 0:00	1:00	S+
−
Rule	Brazil	1994	1995	-	Feb	Sun>=15	 0:00	0	-+
−
Rule	Brazil	1996	only	-	Feb	11	 0:00	0	-+
−
# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)+
−
# adopted by same states, minus AL, SE.+
−
Rule	Brazil	1996	only	-	Oct	 6	 0:00	1:00	S+
−
Rule	Brazil	1997	only	-	Feb	16	 0:00	0	-+
−
# From Daniel C. Sobral (1998-02-12):+
−
# In 1997, the DS began on October 6. The stated reason was that+
−
# because international television networks ignored Brazil's policy on DS,+
−
# they bought the wrong times on satellite for coverage of Pope's visit.+
−
# This year, the ending date of DS was postponed to March 1+
−
# to help dealing with the shortages of electric power.+
−
#+
−
# Decree 2,317 (1997-09-04), adopted by same states.+
−
Rule	Brazil	1997	only	-	Oct	 6	 0:00	1:00	S+
−
# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>+
−
# (1998-02-10)+
−
Rule	Brazil	1998	only	-	Mar	 1	 0:00	0	-+
−
# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)+
−
# adopted by the same states as before.+
−
Rule	Brazil	1998	only	-	Oct	11	 0:00	1:00	S+
−
Rule	Brazil	1999	only	-	Feb	21	 0:00	0	-+
−
# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>+
−
# (1999-08-23) adopted by same states.+
−
# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)+
−
# adds SE, AL, PB, PE, RN, CE, PI, MA and RR.+
−
Rule	Brazil	1999	only	-	Oct	 3	 0:00	1:00	S+
−
Rule	Brazil	2000	only	-	Feb	27	 0:00	0	-+
−
# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)+
−
# adopted by the same states as before.+
−
# Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13)+
−
# repeals DST in PE and RR, effective 2000-10-15 00:00.+
−
# Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17)+
−
# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.+
−
# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>+
−
# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.+
−
Rule	Brazil	2000	2001	-	Oct	Sun>=8	 0:00	1:00	S+
−
Rule	Brazil	2001	2006	-	Feb	Sun>=15	 0:00	0	-+
−
# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.+
−
# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm>+
−
Rule	Brazil	2002	only	-	Nov	 3	 0:00	1:00	S+
−
# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.+
−
# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm>+
−
Rule	Brazil	2003	only	-	Oct	19	 0:00	1:00	S+
−
# Decree 5,223 (2004-10-01) reestablishes DST in MT.+
−
# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm>+
−
Rule	Brazil	2004	only	-	Nov	 2	 0:00	1:00	S+
−
# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),+
−
# adopted by the same states as before.+
−
Rule	Brazil	2005	only	-	Oct	16	 0:00	1:00	S+
−
# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),+
−
# adopted by the same states as before.+
−
Rule	Brazil	2006	only	-	Nov	 5	 0:00	1:00	S+
−
Rule	Brazil	2007	only	-	Feb	25	 0:00	0	-+
−
# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),+
−
# adopted by the same states as before.+
−
Rule	Brazil	2007	only	-	Oct	Sun>=8	 0:00	1:00	S+
−
# From Frederico A. C. Neves (2008-09-10):+
−
# According to this decree+
−
# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm+
−
# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the+
−
# 3rd Feb Sunday. There is an exception on the return date when this is+
−
# the Carnival Sunday then the return date will be the next Sunday...+
−
Rule	Brazil	2008	max	-	Oct	Sun>=15	0:00	1:00	S+
−
Rule	Brazil	2008	2011	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2012	only	-	Feb	Sun>=22	0:00	0	-+
−
Rule	Brazil	2013	2014	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2015	only	-	Feb	Sun>=22	0:00	0	-+
−
Rule	Brazil	2016	2022	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2023	only	-	Feb	Sun>=22	0:00	0	-+
−
Rule	Brazil	2024	2025	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2026	only	-	Feb	Sun>=22	0:00	0	-+
−
Rule	Brazil	2027	2033	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2034	only	-	Feb	Sun>=22	0:00	0	-+
−
Rule	Brazil	2035	2036	-	Feb	Sun>=15	0:00	0	-+
−
Rule	Brazil	2037	only	-	Feb	Sun>=22	0:00	0	-+
−
# From Arthur David Olson (2008-09-29):+
−
# The next is wrong in some years but is better than nothing.+
−
Rule	Brazil	2038	max	-	Feb	Sun>=15	0:00	0	-+
−
+
−
# The latest ruleset listed above says that the following states observe DST:+
−
# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.+
−
+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
#+
−
# Fernando de Noronha (administratively part of PE)+
−
Zone America/Noronha	-2:09:40 -	LMT	1914+
−
			-2:00	Brazil	FN%sT	1990 Sep 17+
−
			-2:00	-	FNT	1999 Sep 30+
−
			-2:00	Brazil	FN%sT	2000 Oct 15+
−
			-2:00	-	FNT	2001 Sep 13+
−
			-2:00	Brazil	FN%sT	2002 Oct  1+
−
			-2:00	-	FNT+
−
# Other Atlantic islands have no permanent settlement.+
−
# These include Trindade and Martim Vaz (administratively part of ES),+
−
# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).+
−
# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;+
−
# it also included the Penedos.+
−
#+
−
# Amapá (AP), east Pará (PA)+
−
# East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.+
−
# The division between east and west Pará is the river Xingu.+
−
# In the north a very small part from the river Javary (now Jari I guess,+
−
# the border with Amapá) to the Amazon, then to the Xingu.+
−
Zone America/Belem	-3:13:56 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1988 Sep 12+
−
			-3:00	-	BRT+
−
#+
−
# west Pará (PA)+
−
# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.+
−
Zone America/Santarem	-3:38:48 -	LMT	1914+
−
			-4:00	Brazil	AM%sT	1988 Sep 12+
−
			-4:00	-	AMT	2008 Jun 24  0:00+
−
			-3:00	-	BRT+
−
#+
−
# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),+
−
# Paraíba (PB)+
−
Zone America/Fortaleza	-2:34:00 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1990 Sep 17+
−
			-3:00	-	BRT	1999 Sep 30+
−
			-3:00	Brazil	BR%sT	2000 Oct 22+
−
			-3:00	-	BRT	2001 Sep 13+
−
			-3:00	Brazil	BR%sT	2002 Oct  1+
−
			-3:00	-	BRT+
−
#+
−
# Pernambuco (PE) (except Atlantic islands)+
−
Zone America/Recife	-2:19:36 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1990 Sep 17+
−
			-3:00	-	BRT	1999 Sep 30+
−
			-3:00	Brazil	BR%sT	2000 Oct 15+
−
			-3:00	-	BRT	2001 Sep 13+
−
			-3:00	Brazil	BR%sT	2002 Oct  1+
−
			-3:00	-	BRT+
−
#+
−
# Tocantins (TO)+
−
Zone America/Araguaina	-3:12:48 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1990 Sep 17+
−
			-3:00	-	BRT	1995 Sep 14+
−
			-3:00	Brazil	BR%sT	2003 Sep 24+
−
			-3:00	-	BRT	2012 Oct 21+
−
			-3:00	Brazil	BR%sT	2013 Sep+
−
			-3:00	-	BRT+
−
#+
−
# Alagoas (AL), Sergipe (SE)+
−
Zone America/Maceio	-2:22:52 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1990 Sep 17+
−
			-3:00	-	BRT	1995 Oct 13+
−
			-3:00	Brazil	BR%sT	1996 Sep  4+
−
			-3:00	-	BRT	1999 Sep 30+
−
			-3:00	Brazil	BR%sT	2000 Oct 22+
−
			-3:00	-	BRT	2001 Sep 13+
−
			-3:00	Brazil	BR%sT	2002 Oct  1+
−
			-3:00	-	BRT+
−
#+
−
# Bahia (BA)+
−
# There are too many Salvadors elsewhere, so use America/Bahia instead+
−
# of America/Salvador.+
−
Zone America/Bahia	-2:34:04 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	2003 Sep 24+
−
			-3:00	-	BRT	2011 Oct 16+
−
			-3:00	Brazil	BR%sT	2012 Oct 21+
−
			-3:00	-	BRT+
−
#+
−
# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),+
−
# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),+
−
# Santa Catarina (SC), Rio Grande do Sul (RS)+
−
Zone America/Sao_Paulo	-3:06:28 -	LMT	1914+
−
			-3:00	Brazil	BR%sT	1963 Oct 23  0:00+
−
			-3:00	1:00	BRST	1964+
−
			-3:00	Brazil	BR%sT+
−
#+
−
# Mato Grosso do Sul (MS)+
−
Zone America/Campo_Grande -3:38:28 -	LMT	1914+
−
			-4:00	Brazil	AM%sT+
−
#+
−
# Mato Grosso (MT)+
−
Zone America/Cuiaba	-3:44:20 -	LMT	1914+
−
			-4:00	Brazil	AM%sT	2003 Sep 24+
−
			-4:00	-	AMT	2004 Oct  1+
−
			-4:00	Brazil	AM%sT+
−
#+
−
# Rondônia (RO)+
−
Zone America/Porto_Velho -4:15:36 -	LMT	1914+
−
			-4:00	Brazil	AM%sT	1988 Sep 12+
−
			-4:00	-	AMT+
−
#+
−
# Roraima (RR)+
−
Zone America/Boa_Vista	-4:02:40 -	LMT	1914+
−
			-4:00	Brazil	AM%sT	1988 Sep 12+
−
			-4:00	-	AMT	1999 Sep 30+
−
			-4:00	Brazil	AM%sT	2000 Oct 15+
−
			-4:00	-	AMT+
−
#+
−
# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto+
−
# The great circle line from Tabatinga to Porto Acre divides+
−
# east from west Amazonas.+
−
Zone America/Manaus	-4:00:04 -	LMT	1914+
−
			-4:00	Brazil	AM%sT	1988 Sep 12+
−
			-4:00	-	AMT	1993 Sep 28+
−
			-4:00	Brazil	AM%sT	1994 Sep 22+
−
			-4:00	-	AMT+
−
#+
−
# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,+
−
#	Eirunepé, Envira, Ipixuna+
−
Zone America/Eirunepe	-4:39:28 -	LMT	1914+
−
			-5:00	Brazil	AC%sT	1988 Sep 12+
−
			-5:00	-	ACT	1993 Sep 28+
−
			-5:00	Brazil	AC%sT	1994 Sep 22+
−
			-5:00	-	ACT	2008 Jun 24  0:00+
−
			-4:00	-	AMT	2013 Nov 10+
−
			-5:00	-	ACT+
−
#+
−
# Acre (AC)+
−
Zone America/Rio_Branco	-4:31:12 -	LMT	1914+
−
			-5:00	Brazil	AC%sT	1988 Sep 12+
−
			-5:00	-	ACT	2008 Jun 24  0:00+
−
			-4:00	-	AMT	2013 Nov 10+
−
			-5:00	-	ACT+
−
+
−
# Chile+
−
+
−
# From Paul Eggert (2015-04-03):+
−
# Shanks & Pottenger says America/Santiago introduced standard time in+
−
# 1890 and rounds its UTC offset to 70W40; guess that in practice this+
−
# was the same offset as in 1916-1919.  It also says Pacific/Easter+
−
# standardized on 109W22 in 1890; assume this didn't change the clocks.+
−
#+
−
# Dates for America/Santiago from 1910 to 2004 are primarily from+
−
# the following source, cited by Oscar van Vlijmen (2006-10-08):+
−
# [1] Chile Law+
−
# http://www.webexhibits.org/daylightsaving/chile.html+
−
# This contains a copy of a this official table:+
−
# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)+
−
# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm+
−
# [1] needs several corrections, though.+
−
#+
−
# The first set of corrections is from:+
−
# [2] History of the Official Time of Chile+
−
# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06).  See:+
−
# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html+
−
# This is an English translation of:+
−
# Historia de la hora oficial de Chile (retrieved 2012-10-24).  See:+
−
# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm+
−
# A fancier Spanish version (requiring mouse-clicking) is at:+
−
# http://www.horaoficial.cl/historia_hora.html+
−
# Conflicts between [1] and [2] were resolved as follows:+
−
#+
−
#  - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites+
−
#    Boletín Nº 1, Aviso Nº 1 (1910).  Go with [2].+
−
#+
−
#  - [1] says SMT was -4:42:45, [2] says Chile's official time from+
−
#    1916 to 1919 was -4:42:46.3, the meridian of Chile's National+
−
#    Astronomical Observatory (OAN), then located in what is now+
−
#    Quinta Normal in Santiago.  Go with [2], rounding it to -4:42:46.+
−
#+
−
#  - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites+
−
#    Boletín Nº 22, Aviso Nº 129/1918 (1918-08-23).  Go with [2].+
−
#+
−
#  - [1] does not give times for transitions; assume they occur+
−
#    at midnight mainland time, the current common practice.  However,+
−
#    go with [2]'s specification of 23:00 for the 1947-05-21 transition.+
−
#+
−
# Another correction to [1] is from Jesper Nørgaard Welen, who+
−
# wrote (2006-10-08), "I think that there are some obvious mistakes in+
−
# the suggested link from Oscar van Vlijmen,... for instance entry 66+
−
# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at+
−
# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16+
−
# respectively), but anyhow it clears up some doubts too."+
−
#+
−
# Data for Pacific/Easter from 1910 through 1967 come from Shanks &+
−
# Pottenger.  After that, for lack of better info assume+
−
# Pacific/Easter is always two hours behind America/Santiago;+
−
# this is known to work for DST transitions starting in 2008 and+
−
# may well be true for earlier transitions.+
−
+
−
# From Eduardo Krell (1995-10-19):+
−
# The law says to switch to DST at midnight [24:00] on the second SATURDAY+
−
# of October....  The law is the same for March and October.+
−
# (1998-09-29):+
−
# Because of the drought this year, the government decided to go into+
−
# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...+
−
# (unless there's another dry season next year, I guess).+
−
+
−
# From Julio I. Pacheco Troncoso (1999-03-18):+
−
# Because of the same drought, the government decided to end DST later,+
−
# on April 3, (one-time change).+
−
+
−
# From Germán Poo-Caamaño (2008-03-03):+
−
# Due to drought, Chile extends Daylight Time in three weeks.  This+
−
# is one-time change (Saturday 3/29 at 24:00 for America/Santiago+
−
# and Saturday 3/29 at 22:00 for Pacific/Easter)+
−
# The Supreme Decree is located at+
−
# http://www.shoa.cl/servicios/supremo316.pdf+
−
#+
−
# From José Miguel Garrido (2008-03-05):+
−
# http://www.shoa.cl/noticias/2008/04hora/hora.htm+
−
+
−
# From Angel Chiang (2010-03-04):+
−
# Subject: DST in Chile exceptionally extended to 3 April due to earthquake+
−
# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098+
−
#+
−
# From Arthur David Olson (2010-03-06):+
−
# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.+
−
+
−
# From Glenn Eychaner (2011-03-28):+
−
# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}+
−
# In English:+
−
# Chile's clocks will go back an hour this year on the 7th of May instead+
−
# of this Saturday. They will go forward again the 3rd Saturday in+
−
# August, not in October as they have since 1968.+
−
+
−
# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):+
−
# As stated in the website of the Chilean Energy Ministry+
−
# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html+
−
# The Chilean Government has decided to postpone the entrance into winter time+
−
# (to leave DST) from March 11 2012 to April 28th 2012....+
−
# Quote from the website communication:+
−
#+
−
# 6. For the year 2012, the dates of entry into winter time will be as follows:+
−
# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at+
−
# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00+
−
# of the same day.+
−
# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,+
−
# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be+
−
# 01:00 on September 2.+
−
+
−
# From Steffen Thorsen (2013-02-15):+
−
# According to several news sources, Chile has extended DST this year,+
−
# they will end DST later and start DST earlier than planned.  They+
−
# hope to save energy.  The new end date is 2013-04-28 00:00 and new+
−
# start date is 2013-09-08 00:00....+
−
# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm+
−
+
−
# From José Miguel Garrido (2014-02-19):+
−
# Today appeared in the Diario Oficial a decree amending the time change+
−
# dates to 2014.+
−
# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)+
−
# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)+
−
# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf+
−
+
−
# From Eduardo Romero Urra (2015-03-03):+
−
# Today has been published officially that Chile will use the DST time+
−
# permanently until March 25 of 2017+
−
# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg+
−
#+
−
# From Paul Eggert (2015-03-03):+
−
# For now, assume that the extension will persist indefinitely.+
−
+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	S+
−
Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-+
−
Rule	Chile	1968	only	-	Nov	 3	4:00u	1:00	S+
−
Rule	Chile	1969	only	-	Mar	30	3:00u	0	-+
−
Rule	Chile	1969	only	-	Nov	23	4:00u	1:00	S+
−
Rule	Chile	1970	only	-	Mar	29	3:00u	0	-+
−
Rule	Chile	1971	only	-	Mar	14	3:00u	0	-+
−
Rule	Chile	1970	1972	-	Oct	Sun>=9	4:00u	1:00	S+
−
Rule	Chile	1972	1986	-	Mar	Sun>=9	3:00u	0	-+
−
Rule	Chile	1973	only	-	Sep	30	4:00u	1:00	S+
−
Rule	Chile	1974	1987	-	Oct	Sun>=9	4:00u	1:00	S+
−
Rule	Chile	1987	only	-	Apr	12	3:00u	0	-+
−
Rule	Chile	1988	1990	-	Mar	Sun>=9	3:00u	0	-+
−
Rule	Chile	1988	1989	-	Oct	Sun>=9	4:00u	1:00	S+
−
Rule	Chile	1990	only	-	Sep	16	4:00u	1:00	S+
−
Rule	Chile	1991	1996	-	Mar	Sun>=9	3:00u	0	-+
−
Rule	Chile	1991	1997	-	Oct	Sun>=9	4:00u	1:00	S+
−
Rule	Chile	1997	only	-	Mar	30	3:00u	0	-+
−
Rule	Chile	1998	only	-	Mar	Sun>=9	3:00u	0	-+
−
Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S+
−
Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-+
−
Rule	Chile	1999	2010	-	Oct	Sun>=9	4:00u	1:00	S+
−
Rule	Chile	2000	2007	-	Mar	Sun>=9	3:00u	0	-+
−
# N.B.: the end of March 29 in Chile is March 30 in Universal time,+
−
# which is used below in specifying the transition.+
−
Rule	Chile	2008	only	-	Mar	30	3:00u	0	-+
−
Rule	Chile	2009	only	-	Mar	Sun>=9	3:00u	0	-+
−
Rule	Chile	2010	only	-	Apr	Sun>=1	3:00u	0	-+
−
Rule	Chile	2011	only	-	May	Sun>=2	3:00u	0	-+
−
Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	S+
−
Rule	Chile	2012	2015	-	Apr	Sun>=23	3:00u	0	-+
−
Rule	Chile	2012	2014	-	Sep	Sun>=2	4:00u	1:00	S+
−
# IATA SSIM anomalies: (1992-02) says 1992-03-14;+
−
# (1996-09) says 1998-03-08.  Ignore these.+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Santiago	-4:42:46 -	LMT	1890+
−
			-4:42:46 -	SMT	1910 Jan 10 # Santiago Mean Time+
−
			-5:00	-	CLT	1916 Jul  1 # Chile Time+
−
			-4:42:46 -	SMT	1918 Sep 10+
−
			-4:00	-	CLT	1919 Jul  1+
−
			-4:42:46 -	SMT	1927 Sep  1+
−
			-5:00	Chile	CL%sT	1932 Sep  1+
−
			-4:00	-	CLT	1942 Jun  1+
−
			-5:00	-	CLT	1942 Aug  1+
−
			-4:00	-	CLT	1946 Jul 15+
−
			-4:00	1:00	CLST	1946 Sep  1 # central Chile+
−
			-4:00	-	CLT	1947 Apr  1+
−
			-5:00	-	CLT	1947 May 21 23:00+
−
			-4:00	Chile	CL%sT	2015 Apr 26  3:00u+
−
			-3:00	-	CLT+
−
Zone Pacific/Easter	-7:17:28 -	LMT	1890+
−
			-7:17:28 -	EMT	1932 Sep    # Easter Mean Time+
−
			-7:00	Chile	EAS%sT	1982 Mar 14 3:00u # Easter Time+
−
			-6:00	Chile	EAS%sT	2015 Apr 26 3:00u+
−
			-5:00	-	EAST+
−
#+
−
# Salas y Gómez Island is uninhabited.+
−
# Other Chilean locations, including Juan Fernández Is, Desventuradas Is,+
−
# and Antarctic bases, are like America/Santiago.+
−
+
−
# Antarctic base using South American rules+
−
# (See the file 'antarctica' for more.)+
−
#+
−
# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)+
−
#+
−
# From Ethan Dicks (1996-10-06):+
−
# It keeps the same time as Punta Arenas, Chile, because, just like us+
−
# and the South Pole, that's the other end of their supply line....+
−
# I verified with someone who was there that since 1980,+
−
# Palmer has followed Chile.  Prior to that, before the Falklands War,+
−
# Palmer used to be supplied from Argentina.+
−
#+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone Antarctica/Palmer	0	-	zzz	1965+
−
			-4:00	Arg	AR%sT	1969 Oct  5+
−
			-3:00	Arg	AR%sT	1982 May+
−
			-4:00	Chile	CL%sT	2015 Apr 26 3:00u+
−
			-3:00	-	CLT+
−
+
−
# Colombia+
−
+
−
# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest.  He writes,+
−
# "A variation of fifteen minutes in the public clocks of Bogota is not rare."+
−
+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	CO	1992	only	-	May	 3	0:00	1:00	S+
−
Rule	CO	1993	only	-	Apr	 4	0:00	0	-+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/Bogota	-4:56:16 -	LMT	1884 Mar 13+
−
			-4:56:16 -	BMT	1914 Nov 23 # Bogotá Mean Time+
−
			-5:00	CO	CO%sT	# Colombia Time+
−
# Malpelo, Providencia, San Andres+
−
# no information; probably like America/Bogota+
−
+
−
# Curaçao+
−
+
−
# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.+
−
#+
−
# From Paul Eggert (2006-03-22):+
−
# Shanks & Pottenger say that The Bottom and Philipsburg have been at+
−
# -4:00 since standard time was introduced on 1912-03-02; and that+
−
# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from+
−
# 1912-02-02 to 1965-01-01.  The former is dubious, since S&P also say+
−
# Saba Island has been like Curaçao.+
−
# This all predates our 1970 cutoff, though.+
−
#+
−
# By July 2007 Curaçao and St Maarten are planned to become+
−
# associated states within the Netherlands, much like Aruba;+
−
# Bonaire, Saba and St Eustatius would become directly part of the+
−
# Netherlands as Kingdom Islands.  This won't affect their time zones+
−
# though, as far as we know.+
−
#+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/Curacao	-4:35:47 -	LMT	1912 Feb 12 # Willemstad+
−
			-4:30	-	ANT	1965 # Netherlands Antilles Time+
−
			-4:00	-	AST+
−
+
−
# From Arthur David Olson (2011-06-15):+
−
# use links for places with new iso3166 codes.+
−
# The name "Lower Prince's Quarter" is both longer than fourteen characters+
−
# and contains an apostrophe; use "Lower_Princes" below.+
−
+
−
Link	America/Curacao	America/Lower_Princes	# Sint Maarten+
−
Link	America/Curacao	America/Kralendijk	# Caribbean Netherlands+
−
+
−
# Ecuador+
−
#+
−
# Milne says the Central and South American Telegraph Company used -5:24:15.+
−
#+
−
# From Paul Eggert (2007-03-04):+
−
# Apparently Ecuador had a failed experiment with DST in 1992.+
−
# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and+
−
# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both+
−
# talk about "hora Sixto".  Leave this alone for now, as we have no data.+
−
#+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Guayaquil	-5:19:20 -	LMT	1890+
−
			-5:14:00 -	QMT	1931 # Quito Mean Time+
−
			-5:00	-	ECT	# Ecuador Time+
−
Zone Pacific/Galapagos	-5:58:24 -	LMT	1931 # Puerto Baquerizo Moreno+
−
			-5:00	-	ECT	1986+
−
			-6:00	-	GALT	# Galápagos Time+
−
+
−
# Falklands+
−
+
−
# From Paul Eggert (2006-03-22):+
−
# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except+
−
# the IATA gives 1996-09-08.  Go with Shanks & Pottenger.+
−
+
−
# From Falkland Islands Government Office, London (2001-01-22)+
−
# via Jesper Nørgaard:+
−
# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15+
−
# April 2001 and advance one hour to summer time at 2 am on Sunday 2+
−
# September.  It is anticipated that the clocks will revert back at 2+
−
# am on Sunday 21 April 2002 and advance to summer time at 2 am on+
−
# Sunday 1 September.+
−
+
−
# From Rives McDow (2001-02-13):+
−
#+
−
# I have communicated several times with people there, and the last+
−
# time I had communications that was helpful was in 1998.  Here is+
−
# what was said then:+
−
#+
−
# "The general rule was that Stanley used daylight saving and the Camp+
−
# did not. However for various reasons many people in the Camp have+
−
# started to use daylight saving (known locally as 'Stanley Time')+
−
# There is no rule as to who uses daylight saving - it is a matter of+
−
# personal choice and so it is impossible to draw a map showing who+
−
# uses it and who does not. Any list would be out of date as soon as+
−
# it was produced. This year daylight saving ended on April 18/19th+
−
# and started again on September 12/13th.  I do not know what the rule+
−
# is, but can find out if you like.  We do not change at the same time+
−
# as UK or Chile."+
−
#+
−
# I did have in my notes that the rule was "Second Saturday in Sep at+
−
# 0:00 until third Saturday in Apr at 0:00".  I think that this does+
−
# not agree in some cases with Shanks; is this true?+
−
#+
−
# Also, there is no mention in the list that some areas in the+
−
# Falklands do not use DST.  I have found in my communications there+
−
# that these areas are on the western half of East Falkland and all of+
−
# West Falkland.  Stanley is the only place that consistently observes+
−
# DST.  Again, as in other places in the world, the farmers don't like+
−
# it.  West Falkland is almost entirely sheep farmers.+
−
#+
−
# I know one lady there that keeps a list of which farm keeps DST and+
−
# which doesn't each year.  She runs a shop in Stanley, and says that+
−
# the list changes each year.  She uses it to communicate to her+
−
# customers, catching them when they are home for lunch or dinner.+
−
+
−
# From Paul Eggert (2001-03-05):+
−
# For now, we'll just record the time in Stanley, since we have no+
−
# better info.+
−
+
−
# From Steffen Thorsen (2011-04-01):+
−
# The Falkland Islands will not turn back clocks this winter, but stay on+
−
# daylight saving time.+
−
#+
−
# One source:+
−
# http://www.falklandnews.com/public/story.cfm?get=5914&source=3+
−
#+
−
# We have gotten this confirmed by a clerk of the legislative assembly:+
−
# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the+
−
# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3+
−
# hours) on the first Sunday of September at 0200hrs.+
−
#+
−
# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands+
−
# will not revert to local mean time, but clocks will remain on Summer+
−
# time (UTC/GMT - 3 hours) throughout the whole of 2011.  Any long term+
−
# change to local time following the trial period will be notified.+
−
#+
−
# From Andrew Newman (2012-02-24)+
−
# A letter from Justin McPhee, Chief Executive,+
−
# Cable & Wireless Falkland Islands (dated 2012-02-22)+
−
# states...+
−
#   The current Atlantic/Stanley entry under South America expects the+
−
#   clocks to go back to standard Falklands Time (FKT) on the 15th April.+
−
#   The database entry states that in 2011 Stanley was staying on fixed+
−
#   summer time on a trial basis only.  FIG need to contact IANA and/or+
−
#   the maintainers of the database to inform them we're adopting+
−
#   the same policy this year and suggest recommendations for future years.+
−
#+
−
# For now we will assume permanent summer time for the Falklands+
−
# until advised differently (to apply for 2012 and beyond, after the 2011+
−
# experiment was apparently successful.)+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	Falk	1937	1938	-	Sep	lastSun	0:00	1:00	S+
−
Rule	Falk	1938	1942	-	Mar	Sun>=19	0:00	0	-+
−
Rule	Falk	1939	only	-	Oct	1	0:00	1:00	S+
−
Rule	Falk	1940	1942	-	Sep	lastSun	0:00	1:00	S+
−
Rule	Falk	1943	only	-	Jan	1	0:00	0	-+
−
Rule	Falk	1983	only	-	Sep	lastSun	0:00	1:00	S+
−
Rule	Falk	1984	1985	-	Apr	lastSun	0:00	0	-+
−
Rule	Falk	1984	only	-	Sep	16	0:00	1:00	S+
−
Rule	Falk	1985	2000	-	Sep	Sun>=9	0:00	1:00	S+
−
Rule	Falk	1986	2000	-	Apr	Sun>=16	0:00	0	-+
−
Rule	Falk	2001	2010	-	Apr	Sun>=15	2:00	0	-+
−
Rule	Falk	2001	2010	-	Sep	Sun>=1	2:00	1:00	S+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone Atlantic/Stanley	-3:51:24 -	LMT	1890+
−
			-3:51:24 -	SMT	1912 Mar 12 # Stanley Mean Time+
−
			-4:00	Falk	FK%sT	1983 May    # Falkland Is Time+
−
			-3:00	Falk	FK%sT	1985 Sep 15+
−
			-4:00	Falk	FK%sT	2010 Sep  5  2:00+
−
			-3:00	-	FKST+
−
+
−
# French Guiana+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Cayenne	-3:29:20 -	LMT	1911 Jul+
−
			-4:00	-	GFT	1967 Oct # French Guiana Time+
−
			-3:00	-	GFT+
−
+
−
# Guyana+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/Guyana	-3:52:40 -	LMT	1915 Mar    # Georgetown+
−
			-3:45	-	GBGT	1966 May 26 # Br Guiana Time+
−
			-3:45	-	GYT	1975 Jul 31 # Guyana Time+
−
			-3:00	-	GYT	1991+
−
# IATA SSIM (1996-06) says -4:00.  Assume a 1991 switch.+
−
			-4:00	-	GYT+
−
+
−
# Paraguay+
−
#+
−
# From Paul Eggert (2006-03-22):+
−
# Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,+
−
# and autumn transitions are 00:00 -> 23:00.  Go with pre-1999+
−
# editions of Shanks, and with the IATA, who say transitions occur at 00:00.+
−
#+
−
# From Waldemar Villamayor-Venialbo (2013-09-20):+
−
# No time of the day is established for the adjustment, so people normally+
−
# adjust their clocks at 0 hour of the given dates.+
−
#+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	Para	1975	1988	-	Oct	 1	0:00	1:00	S+
−
Rule	Para	1975	1978	-	Mar	 1	0:00	0	-+
−
Rule	Para	1979	1991	-	Apr	 1	0:00	0	-+
−
Rule	Para	1989	only	-	Oct	22	0:00	1:00	S+
−
Rule	Para	1990	only	-	Oct	 1	0:00	1:00	S+
−
Rule	Para	1991	only	-	Oct	 6	0:00	1:00	S+
−
Rule	Para	1992	only	-	Mar	 1	0:00	0	-+
−
Rule	Para	1992	only	-	Oct	 5	0:00	1:00	S+
−
Rule	Para	1993	only	-	Mar	31	0:00	0	-+
−
Rule	Para	1993	1995	-	Oct	 1	0:00	1:00	S+
−
Rule	Para	1994	1995	-	Feb	lastSun	0:00	0	-+
−
Rule	Para	1996	only	-	Mar	 1	0:00	0	-+
−
# IATA SSIM (2000-02) says 1999-10-10; ignore this for now.+
−
# From Steffen Thorsen (2000-10-02):+
−
# I have three independent reports that Paraguay changed to DST this Sunday+
−
# (10-01).+
−
#+
−
# Translated by Gwillim Law (2001-02-27) from+
−
# Noticias, a daily paper in Asunción, Paraguay (2000-10-01):+
−
# http://www.diarionoticias.com.py/011000/nacional/naciona1.htm+
−
# Starting at 0:00 today, the clock will be set forward 60 minutes, in+
−
# fulfillment of Decree No. 7,273 of the Executive Power....  The time change+
−
# system has been operating for several years.  Formerly there was a separate+
−
# decree each year; the new law has the same effect, but permanently.  Every+
−
# year, the time will change on the first Sunday of October; likewise, the+
−
# clock will be set back on the first Sunday of March.+
−
#+
−
Rule	Para	1996	2001	-	Oct	Sun>=1	0:00	1:00	S+
−
# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.+
−
Rule	Para	1997	only	-	Feb	lastSun	0:00	0	-+
−
# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but+
−
# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).+
−
Rule	Para	1998	2001	-	Mar	Sun>=1	0:00	0	-+
−
# From Rives McDow (2002-02-28):+
−
# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the+
−
# dst method to be from the first Sunday in September to the first Sunday in+
−
# April.+
−
Rule	Para	2002	2004	-	Apr	Sun>=1	0:00	0	-+
−
Rule	Para	2002	2003	-	Sep	Sun>=1	0:00	1:00	S+
−
#+
−
# From Jesper Nørgaard Welen (2005-01-02):+
−
# There are several sources that claim that Paraguay made+
−
# a timezone rule change in autumn 2004.+
−
# From Steffen Thorsen (2005-01-05):+
−
# Decree 1,867 (2004-03-05)+
−
# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)+
−
# http://www.presidencia.gov.py/decretos/D1867.pdf+
−
Rule	Para	2004	2009	-	Oct	Sun>=15	0:00	1:00	S+
−
Rule	Para	2005	2009	-	Mar	Sun>=8	0:00	0	-+
−
# From Carlos Raúl Perasso (2010-02-18):+
−
# By decree number 3958 issued yesterday+
−
# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf+
−
# Paraguay changes its DST schedule, postponing the March rule to April and+
−
# modifying the October date. The decree reads:+
−
# ...+
−
# Art. 1. It is hereby established that from the second Sunday of the month of+
−
# April of this year (2010), the official time is to be set back 60 minutes,+
−
# and that on the first Sunday of the month of October, it is to be set+
−
# forward 60 minutes, in all the territory of the Paraguayan Republic.+
−
# ...+
−
Rule	Para	2010	max	-	Oct	Sun>=1	0:00	1:00	S+
−
Rule	Para	2010	2012	-	Apr	Sun>=8	0:00	0	-+
−
#+
−
# From Steffen Thorsen (2013-03-07):+
−
# Paraguay will end DST on 2013-03-24 00:00....+
−
# http://www.ande.gov.py/interna.php?id=1075+
−
#+
−
# From Carlos Raúl Perasso (2013-03-15):+
−
# The change in Paraguay is now final.  Decree number 10780+
−
# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf+
−
# From Carlos Raúl Perasso (2014-02-28):+
−
# Decree 1264 can be found at:+
−
# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf+
−
Rule	Para	2013	max	-	Mar	Sun>=22	0:00	0	-+
−
+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Asuncion	-3:50:40 -	LMT	1890+
−
			-3:50:40 -	AMT	1931 Oct 10 # Asunción Mean Time+
−
			-4:00	-	PYT	1972 Oct    # Paraguay Time+
−
			-3:00	-	PYT	1974 Apr+
−
			-4:00	Para	PY%sT+
−
+
−
# Peru+
−
#+
−
# From Evelyn C. Leeper via Mark Brader (2003-10-26)+
−
# <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:+
−
# When we were in Peru in 1985-1986, they apparently switched over+
−
# sometime between December 29 and January 3 while we were on the Amazon.+
−
#+
−
# From Paul Eggert (2006-03-22):+
−
# Shanks & Pottenger don't have this transition.  Assume 1986 was like 1987.+
−
+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
Rule	Peru	1938	only	-	Jan	 1	0:00	1:00	S+
−
Rule	Peru	1938	only	-	Apr	 1	0:00	0	-+
−
Rule	Peru	1938	1939	-	Sep	lastSun	0:00	1:00	S+
−
Rule	Peru	1939	1940	-	Mar	Sun>=24	0:00	0	-+
−
Rule	Peru	1986	1987	-	Jan	 1	0:00	1:00	S+
−
Rule	Peru	1986	1987	-	Apr	 1	0:00	0	-+
−
Rule	Peru	1990	only	-	Jan	 1	0:00	1:00	S+
−
Rule	Peru	1990	only	-	Apr	 1	0:00	0	-+
−
# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.+
−
Rule	Peru	1994	only	-	Jan	 1	0:00	1:00	S+
−
Rule	Peru	1994	only	-	Apr	 1	0:00	0	-+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/Lima	-5:08:12 -	LMT	1890+
−
			-5:08:36 -	LMT	1908 Jul 28 # Lima Mean Time?+
−
			-5:00	Peru	PE%sT	# Peru Time+
−
+
−
# South Georgia+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone Atlantic/South_Georgia -2:26:08 -	LMT	1890 # Grytviken+
−
			-2:00	-	GST	# South Georgia Time+
−
+
−
# South Sandwich Is+
−
# uninhabited; scientific personnel have wintered+
−
+
−
# Suriname+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Paramaribo	-3:40:40 -	LMT	1911+
−
			-3:40:52 -	PMT	1935     # Paramaribo Mean Time+
−
			-3:40:36 -	PMT	1945 Oct    # The capital moved?+
−
			-3:30	-	NEGT	1975 Nov 20 # Dutch Guiana Time+
−
			-3:30	-	SRT	1984 Oct    # Suriname Time+
−
			-3:00	-	SRT+
−
+
−
# Trinidad and Tobago+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Port_of_Spain -4:06:04 -	LMT	1912 Mar 2+
−
			-4:00	-	AST+
−
+
−
# These all agree with Trinidad and Tobago since 1970.+
−
Link America/Port_of_Spain America/Anguilla+
−
Link America/Port_of_Spain America/Antigua+
−
Link America/Port_of_Spain America/Dominica+
−
Link America/Port_of_Spain America/Grenada+
−
Link America/Port_of_Spain America/Guadeloupe+
−
Link America/Port_of_Spain America/Marigot	# St Martin (French part)+
−
Link America/Port_of_Spain America/Montserrat+
−
Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy+
−
Link America/Port_of_Spain America/St_Kitts	# St Kitts & Nevis+
−
Link America/Port_of_Spain America/St_Lucia+
−
Link America/Port_of_Spain America/St_Thomas	# Virgin Islands (US)+
−
Link America/Port_of_Spain America/St_Vincent+
−
Link America/Port_of_Spain America/Tortola	# Virgin Islands (UK)+
−
+
−
# Uruguay+
−
# From Paul Eggert (1993-11-18):+
−
# Uruguay wins the prize for the strangest peacetime manipulation of the rules.+
−
# From Shanks & Pottenger:+
−
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S+
−
# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.+
−
Rule	Uruguay	1923	only	-	Oct	 2	 0:00	0:30	HS+
−
Rule	Uruguay	1924	1926	-	Apr	 1	 0:00	0	-+
−
Rule	Uruguay	1924	1925	-	Oct	 1	 0:00	0:30	HS+
−
Rule	Uruguay	1933	1935	-	Oct	lastSun	 0:00	0:30	HS+
−
# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.+
−
Rule	Uruguay	1934	1936	-	Mar	Sat>=25	23:30s	0	-+
−
Rule	Uruguay	1936	only	-	Nov	 1	 0:00	0:30	HS+
−
Rule	Uruguay	1937	1941	-	Mar	lastSun	 0:00	0	-+
−
# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.+
−
Rule	Uruguay	1937	1940	-	Oct	lastSun	 0:00	0:30	HS+
−
# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,+
−
# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger.+
−
Rule	Uruguay	1941	only	-	Aug	 1	 0:00	0:30	HS+
−
Rule	Uruguay	1942	only	-	Jan	 1	 0:00	0	-+
−
Rule	Uruguay	1942	only	-	Dec	14	 0:00	1:00	S+
−
Rule	Uruguay	1943	only	-	Mar	14	 0:00	0	-+
−
Rule	Uruguay	1959	only	-	May	24	 0:00	1:00	S+
−
Rule	Uruguay	1959	only	-	Nov	15	 0:00	0	-+
−
Rule	Uruguay	1960	only	-	Jan	17	 0:00	1:00	S+
−
Rule	Uruguay	1960	only	-	Mar	 6	 0:00	0	-+
−
Rule	Uruguay	1965	1967	-	Apr	Sun>=1	 0:00	1:00	S+
−
Rule	Uruguay	1965	only	-	Sep	26	 0:00	0	-+
−
Rule	Uruguay	1966	1967	-	Oct	31	 0:00	0	-+
−
Rule	Uruguay	1968	1970	-	May	27	 0:00	0:30	HS+
−
Rule	Uruguay	1968	1970	-	Dec	 2	 0:00	0	-+
−
Rule	Uruguay	1972	only	-	Apr	24	 0:00	1:00	S+
−
Rule	Uruguay	1972	only	-	Aug	15	 0:00	0	-+
−
Rule	Uruguay	1974	only	-	Mar	10	 0:00	0:30	HS+
−
Rule	Uruguay	1974	only	-	Dec	22	 0:00	1:00	S+
−
Rule	Uruguay	1976	only	-	Oct	 1	 0:00	0	-+
−
Rule	Uruguay	1977	only	-	Dec	 4	 0:00	1:00	S+
−
Rule	Uruguay	1978	only	-	Apr	 1	 0:00	0	-+
−
Rule	Uruguay	1979	only	-	Oct	 1	 0:00	1:00	S+
−
Rule	Uruguay	1980	only	-	May	 1	 0:00	0	-+
−
Rule	Uruguay	1987	only	-	Dec	14	 0:00	1:00	S+
−
Rule	Uruguay	1988	only	-	Mar	14	 0:00	0	-+
−
Rule	Uruguay	1988	only	-	Dec	11	 0:00	1:00	S+
−
Rule	Uruguay	1989	only	-	Mar	12	 0:00	0	-+
−
Rule	Uruguay	1989	only	-	Oct	29	 0:00	1:00	S+
−
# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2,+
−
# and that 1992/3's DST was from 10-25 to 03-01.  Go with IATA.+
−
Rule	Uruguay	1990	1992	-	Mar	Sun>=1	 0:00	0	-+
−
Rule	Uruguay	1990	1991	-	Oct	Sun>=21	 0:00	1:00	S+
−
Rule	Uruguay	1992	only	-	Oct	18	 0:00	1:00	S+
−
Rule	Uruguay	1993	only	-	Feb	28	 0:00	0	-+
−
# From Eduardo Cota (2004-09-20):+
−
# The Uruguayan government has decreed a change in the local time....+
−
# http://www.presidencia.gub.uy/decretos/2004091502.htm+
−
Rule	Uruguay	2004	only	-	Sep	19	 0:00	1:00	S+
−
# From Steffen Thorsen (2005-03-11):+
−
# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to+
−
# save energy ... it was postponed two weeks....+
−
# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm+
−
Rule	Uruguay	2005	only	-	Mar	27	 2:00	0	-+
−
# From Eduardo Cota (2005-09-27):+
−
# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF+
−
# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at+
−
# 02:00 local time, official time in Uruguay will be at GMT -2.+
−
Rule	Uruguay	2005	only	-	Oct	 9	 2:00	1:00	S+
−
Rule	Uruguay	2006	only	-	Mar	12	 2:00	0	-+
−
# From Jesper Nørgaard Welen (2006-09-06):+
−
# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF+
−
Rule	Uruguay	2006	max	-	Oct	Sun>=1	 2:00	1:00	S+
−
Rule	Uruguay	2007	max	-	Mar	Sun>=8	 2:00	0	-+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28+
−
			-3:44:44 -	MMT	1920 May  1 # Montevideo MT+
−
			-3:30	Uruguay	UY%sT	1942 Dec 14 # Uruguay Time+
−
			-3:00	Uruguay	UY%sT+
−
+
−
# Venezuela+
−
#+
−
# From John Stainforth (2007-11-28):+
−
# ... the change for Venezuela originally expected for 2007-12-31 has+
−
# been brought forward to 2007-12-09.  The official announcement was+
−
# published today in the "Gaceta Oficial de la República Bolivariana+
−
# de Venezuela, número 38.819" (official document for all laws or+
−
# resolution publication)+
−
# http://www.globovision.com/news.php?nid=72208+
−
+
−
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]+
−
Zone	America/Caracas	-4:27:44 -	LMT	1890+
−
			-4:27:40 -	CMT	1912 Feb 12 # Caracas Mean Time?+
−
			-4:30	-	VET	1965        # Venezuela Time+
−
			-4:00	-	VET	2007 Dec  9  3:00+
−
			-4:30	-	VET+
−