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-# @(#)southamerica 8.19
-# <pre>
-
-# This data is by no means authoritative; if you think you know better,
-# go ahead and edit the file (and please send any changes to
-# tz@elsie.nci.nih.gov for general use in the future).
-
-# From Paul Eggert (2006-03-22):
-# A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
-# San Diego: ACS Publications, Inc. (2003).
-#
-# 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, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
-#
-# 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 Sao 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 Brasilia time" is considered the
-# "official time" because Brasilia is the capital city.
-# The other three time zones are called "Brasilia 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 Brasilia
-# -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 (1988-01-199):
-# 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 Hidrografia 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 Sao 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 Fabian L. Arce Jofre (2000-04-04):
-# The law that claimed DST for Argentina was derogated by President Fernando
-# de la Rua 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 Norgaard Welen (2007-12-26)
-# The last hurdle of Argentina DST is over, the proposal was approved in
-# the lower chamber too (Deputados) 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:
-# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996">
-# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
-# </a>
-#
-# 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.
-Rule Arg 2007 only - Dec 30 0:00 1:00 S
-Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
-Rule Arg 2008 max - Oct Sun>=1 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 (2006-03-22):
-# <a href="http://www.spicasc.net/horvera.html">
-# Hora de verano para la Republica Argentina (2003-06-08)
-# </a> 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, Tucuman.
-#
-# From Mariano Absatz (2004-06-14):
-# ... this weekend, the Province of Tucuman 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 pais
-# (Argentine Province delayed clock and mark difference with the rest of the
-# country)
-# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel">
-# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
-# </a>
-#
-# Es inminente que en San Luis atrasen una hora los relojes
-# (It is imminent in San Luis clocks one hour delay)
-# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414">
-# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414
-# </a>
-#
-# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html">
-# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
-# </a>
-
-# From Jesper Norgaard Welen (2008-01-18):
-# The page of the San Luis provincial government
-# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812">
-# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
-# </a>
-# 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 21.st 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 Norgaard 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
-# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834">
-# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834
-# </a>
-# 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 Arthur David Olson (2008-03-15):
-# Until there's better information, asssume San Luis was like San Juan
-# rather than Mendoza (since San Juan has a simpler DST history).
-
-# Unless otherwise specified, data 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, but we
-# haven't verified this yet so for now we'll keep it a single region.
-#
-# 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 # Cordoba 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
-#
-# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
-# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB),
-# San Luis (SL), La Pampa (LP), Neuquen (NQ), Rio Negro (RN)
-#
-# 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.
-# - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15,
-# then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01.
-# - 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
-#
-# Tucuman (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
-#
-# 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
-#
-# 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
-#
-# 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
-#
-# 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
-#
-# San Luis (SL)
-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 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 Jan 21
- -3:00 - ART
-#
-# Santa Cruz (SC)
-Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
- -4:16:48 - CMT 1920 May # Cordoba 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
-#
-# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)
-Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
- -4:16:48 - CMT 1920 May # Cordoba 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
-
-# Aruba
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
- -4:30 - ANT 1965 # Netherlands Antilles Time
- -4:00 - AST
-
-# 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), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
-# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (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 Goias 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 Amapa (AP), Ceara (CE),
-# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
-# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
-
-# From Marcos Tadeu (1998-09-27):
-# <a href="http://pcdsh01.on.br/verao1.html">
-# Brazilian official page
-# </a>
-
-# From Jesper Norgaard (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 Eggert (2002-10-10):
-# The official decrees referenced below are mostly taken from
-# <a href="http://pcdsh01.on.br/DecHV.html">
-# Decretos sobre o Horario de Verao no Brasil
-# </a>.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01)
-# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (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 <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
-# revoked DST.
-# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24)
-# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (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 <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24)
-Rule Brazil 1953 only - Mar 1 0:00 0 -
-# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30)
-# revoked DST.
-# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (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 <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (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 <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (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 <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27)
-Rule Brazil 1965 only - Jan 31 0:00 1:00 S
-Rule Brazil 1965 only - Mar 31 0:00 0 -
-# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22)
-Rule Brazil 1965 only - Dec 1 0:00 1:00 S
-# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18)
-Rule Brazil 1966 1968 - Mar 1 0:00 0 -
-Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
-# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15)
-# revoked DST.
-# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (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 <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22)
-Rule Brazil 1987 only - Oct 25 0:00 1:00 S
-Rule Brazil 1988 only - Feb 7 0:00 0 -
-# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (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 <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (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 <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (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 -
-# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (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 -
-# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (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 <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28)
-# adopted by same states, plus AM.
-# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22;
-# web page corrected 2004-01-07) adopted by same states, minus AM.
-# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14)
-# adopted by same states, plus MT and TO.
-# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (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 <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (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 <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a>
-# (1998-02-10)
-Rule Brazil 1998 only - Mar 1 0:00 0 -
-# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (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 <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a>
-# (1999-08-23) adopted by same states.
-# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (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 <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06)
-# adopted by the same states as before.
-# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13)
-# repeals DST in PE and RR, effective 2000-10-15 00:00.
-# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17)
-# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
-# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
-# (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.
-# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a>
-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.
-# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a>
-Rule Brazil 2003 only - Oct 19 0:00 1:00 S
-# Decree 5,223 (2004-10-01) reestablishes DST in MT.
-# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm"></a>
-Rule Brazil 2004 only - Nov 2 0:00 1:00 S
-# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19),
-# adopted by the same states as before.
-Rule Brazil 2005 only - Oct 16 0:00 1:00 S
-# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (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 number not yet known)
-# http://www.brasil.gov.br/noticias/ultimas_noticias/horario_verao070920/
-# (2007-09-20) after a heads-up from Steffen Thorsen:
-Rule Brazil 2007 max - Oct Sun>=8 0:00 1:00 S
-Rule Brazil 2008 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.
-# For dates after mid-2008, the above rules with TO="max" are guesses
-# and are quite possibly wrong, but are more likely than no DST at all.
-
-
-# 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 Martin Vaz (administratively part of ES),
-# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE).
-# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
-# it also included the Penedos.
-#
-# Amapa (AP), east Para (PA)
-# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu.
-# The division between east and west Para is the river Xingu.
-# In the north a very small part from the river Javary (now Jari I guess,
-# the border with Amapa) 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
-#
-# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN),
-# Paraiba (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
-#
-# 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
-#
-# Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
-# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (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 00:00
- -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
-#
-# west Para (PA), Rondonia (RO)
-# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem.
-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, Jutai, 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,
-# Eirunepe, 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
-#
-# Acre (AC)
-Zone America/Rio_Branco -4:31:12 - LMT 1914
- -5:00 Brazil AC%sT 1988 Sep 12
- -5:00 - ACT
-
-
-# Chile
-
-# 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 Oscar van Vlijmen (2006-10-08):
-# http://www.horaoficial.cl/cambio.htm
-
-# From Jesper Norgaard Welen (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.
-
-# From Paul Eggert (2006-12-27):
-# The following data for Chile and America/Santiago are from
-# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
-# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks
-# & Pottenger, except with DST transitions after 1932 cloned from
-# America/Santiago. The pre-1980 Pacific/Easter data are dubious,
-# but we have no other source.
-
-# From German Poo-Caaman~o (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
-# <a href="http://www.shoa.cl/servicios/supremo316.pdf">
-# http://www.shoa.cl/servicios/supremo316.pdf
-# </a>
-# and the instructions for 2008 are located in:
-# <a href="http://www.horaoficial.cl/cambio.htm">
-# http://www.horaoficial.cl/cambio.htm
-# </a>.
-
-# From José Miguel Garrido (2008-03-05):
-# ...
-# You could see the announces of the change on
-# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm">
-# http://www.shoa.cl/noticias/2008/04hora/hora.htm
-# </a>.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
-Rule Chile 1928 1932 - Apr 1 0:00 0 -
-Rule Chile 1942 only - Jun 1 4:00u 0 -
-Rule Chile 1942 only - Aug 1 5:00u 1:00 S
-Rule Chile 1946 only - Jul 15 4:00u 1:00 S
-Rule Chile 1946 only - Sep 1 3:00u 0:00 -
-Rule Chile 1947 only - Apr 1 4:00u 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 1989 - Mar Sun>=9 3:00u 0 -
-Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
-Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
-Rule Chile 1990 only - Mar 18 3:00u 0 -
-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 max - 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 max - Mar Sun>=9 3:00u 0 -
-# 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 # Santiago Mean Time
- -5:00 - CLT 1916 Jul 1 # Chile Time
- -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
- -4:00 - CLT 1919 Jul 1 # Chile Time
- -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
- -5:00 Chile CL%sT 1947 May 22 # Chile Time
- -4:00 Chile CL%sT
-Zone Pacific/Easter -7:17:44 - LMT 1890
- -7:17:28 - EMT 1932 Sep # Easter Mean Time
- -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time
- -6:00 Chile EAS%sT
-#
-# Sala y Gomez Island is like Pacific/Easter.
-# Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
-# San Felix, and Antarctic bases, are like America/Santiago.
-
-# Colombia
-# 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 -4:56:20 - LMT 1884 Mar 13
- -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time
- -5:00 CO CO%sT # Colombia Time
-# Malpelo, Providencia, San Andres
-# no information; probably like America/Bogota
-
-# Curacao
-#
-# 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 Curacao.
-# This all predates our 1970 cutoff, though.
-#
-# By July 2007 Curacao 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 -4:35:44 - LMT 1912 Feb 12 # Willemstad
- -4:30 - ANT 1965 # Netherlands Antilles Time
- -4:00 - AST
-
-# Ecuador
-#
-# 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 # Galapagos 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 Norgaard:
-# ... 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.
-
-# 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 max - Apr Sun>=15 2:00 0 -
-Rule Falk 2001 max - 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
-
-# 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 from 01:00 -> 02:00,
-# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999
-# editions of Shanks, and with the IATA, who say transitions occur at 00:00.
-# 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
-# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm">
-# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01)
-# </a>:
-# 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 Norgaard 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 Raul Perasso via Jesper Norgaard Welen (2006-10-13)
-# <http://www.presidencia.gov.py/decretos/D1867.pdf>
-Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S
-Rule Para 2005 max - Mar Sun>=8 0:00 0 -
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Asuncion -3:50:40 - LMT 1890
- -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time
- -4:00 - PYT 1972 Oct # Paraguay Time
- -3:00 - PYT 1974 Apr
- -4:00 Para PY%sT
-
-# Peru
-#
-# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net">
-# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a>
-# 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
-
-# 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 Norgaard 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 Republica Bolivariana
-# de Venezuela, numero 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 03:00
- -4:30 - VET