1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# This file is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@iana.org for general use in the future).  For more, please see
7# the file CONTRIBUTING in the tz distribution.
8
9# From Paul Eggert (2014-10-31):
10#
11# Unless otherwise specified, the source for data through 1990 is:
12# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
13# San Diego: ACS Publications, Inc. (2003).
14# Unfortunately this book contains many errors and cites no sources.
15#
16# Gwillim Law writes that a good source
17# for recent time zone data is the International Air Transport
18# Association's Standard Schedules Information Manual (IATA SSIM),
19# published semiannually.  Law sent in several helpful summaries
20# of the IATA's data after 1990.  Except where otherwise noted,
21# IATA SSIM is the source for entries after 1990.
22#
23# For data circa 1899, a common source is:
24# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25# http://www.jstor.org/stable/1774359
26#
27# Earlier editions of these tables used the North American style (e.g. ARST and
28# ARDT for Argentine Standard and Daylight Time), but the following quote
29# suggests that it's better to use European style (e.g. ART and ARST).
30#	I suggest the use of _Summer time_ instead of the more cumbersome
31#	_daylight-saving time_.  _Summer time_ seems to be in general use
32#	in Europe and South America.
33#	-- E O Cutler, _New York Times_ (1937-02-14), quoted in
34#	H L Mencken, _The American Language: Supplement I_ (1960), p 466
35#
36# Earlier editions of these tables also used the North American style
37# for time zones in Brazil, but this was incorrect, as Brazilians say
38# "summer time".  Reinaldo Goulart, a São Paulo businessman active in
39# the railroad sector, writes (1999-07-06):
40#	The subject of time zones is currently a matter of discussion/debate in
41#	Brazil.  Let's say that "the Brasília time" is considered the
42#	"official time" because Brasília is the capital city.
43#	The other three time zones are called "Brasília time "minus one" or
44#	"plus one" or "plus two".  As far as I know there is no such
45#	name/designation as "Eastern Time" or "Central Time".
46# So I invented the following (English-language) abbreviations for now.
47# Corrections are welcome!
48#		std	dst
49#	-2:00	FNT	FNST	Fernando de Noronha
50#	-3:00	BRT	BRST	Brasília
51#	-4:00	AMT	AMST	Amazon
52#	-5:00	ACT	ACST	Acre
53
54###############################################################################
55
56###############################################################################
57
58# Argentina
59
60# From Bob Devine (1988-01-28):
61# Argentina: first Sunday in October to first Sunday in April since 1976.
62# Double Summer time from 1969 to 1974.  Switches at midnight.
63
64# From U. S. Naval Observatory (1988-01-19):
65# ARGENTINA           3 H BEHIND   UTC
66
67# From Hernan G. Otero (1995-06-26):
68# I am sending modifications to the Argentine time zone table...
69# AR was chosen because they are the ISO letters that represent Argentina.
70
71# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
72Rule	Arg	1930	only	-	Dec	 1	0:00	1:00	S
73Rule	Arg	1931	only	-	Apr	 1	0:00	0	-
74Rule	Arg	1931	only	-	Oct	15	0:00	1:00	S
75Rule	Arg	1932	1940	-	Mar	 1	0:00	0	-
76Rule	Arg	1932	1939	-	Nov	 1	0:00	1:00	S
77Rule	Arg	1940	only	-	Jul	 1	0:00	1:00	S
78Rule	Arg	1941	only	-	Jun	15	0:00	0	-
79Rule	Arg	1941	only	-	Oct	15	0:00	1:00	S
80Rule	Arg	1943	only	-	Aug	 1	0:00	0	-
81Rule	Arg	1943	only	-	Oct	15	0:00	1:00	S
82Rule	Arg	1946	only	-	Mar	 1	0:00	0	-
83Rule	Arg	1946	only	-	Oct	 1	0:00	1:00	S
84Rule	Arg	1963	only	-	Oct	 1	0:00	0	-
85Rule	Arg	1963	only	-	Dec	15	0:00	1:00	S
86Rule	Arg	1964	1966	-	Mar	 1	0:00	0	-
87Rule	Arg	1964	1966	-	Oct	15	0:00	1:00	S
88Rule	Arg	1967	only	-	Apr	 2	0:00	0	-
89Rule	Arg	1967	1968	-	Oct	Sun>=1	0:00	1:00	S
90Rule	Arg	1968	1969	-	Apr	Sun>=1	0:00	0	-
91Rule	Arg	1974	only	-	Jan	23	0:00	1:00	S
92Rule	Arg	1974	only	-	May	 1	0:00	0	-
93Rule	Arg	1988	only	-	Dec	 1	0:00	1:00	S
94#
95# From Hernan G. Otero (1995-06-26):
96# These corrections were contributed by InterSoft Argentina S.A.,
97# obtaining the data from the:
98# Talleres de Hidrografía Naval Argentina
99# (Argentine Naval Hydrography Institute)
100Rule	Arg	1989	1993	-	Mar	Sun>=1	0:00	0	-
101Rule	Arg	1989	1992	-	Oct	Sun>=15	0:00	1:00	S
102#
103# From Hernan G. Otero (1995-06-26):
104# From this moment on, the law that mandated the daylight saving
105# time corrections was derogated and no more modifications
106# to the time zones (for daylight saving) are now made.
107#
108# From Rives McDow (2000-01-10):
109# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
110# which did not result in the switch of a time zone, as they stayed 9 hours
111# from the International Date Line.
112Rule	Arg	1999	only	-	Oct	Sun>=1	0:00	1:00	S
113# From Paul Eggert (2007-12-28):
114# DST was set to expire on March 5, not March 3, but since it was converted
115# to standard time on March 3 it's more convenient for us to pretend that
116# it ended on March 3.
117Rule	Arg	2000	only	-	Mar	3	0:00	0	-
118#
119# From Peter Gradelski via Steffen Thorsen (2000-03-01):
120# We just checked with our São Paulo office and they say the government of
121# Argentina decided not to become one of the countries that go on or off DST.
122# So Buenos Aires should be -3 hours from GMT at all times.
123#
124# From Fabián L. Arce Jofré (2000-04-04):
125# The law that claimed DST for Argentina was derogated by President Fernando
126# de la Rúa on March 2, 2000, because it would make people spend more energy
127# in the winter time, rather than less.  The change took effect on March 3.
128#
129# From Mariano Absatz (2001-06-06):
130# one of the major newspapers here in Argentina said that the 1999
131# Timezone Law (which never was effectively applied) will (would?) be
132# in effect.... The article is at
133# http://ar.clarin.com/diario/2001-06-06/e-01701.htm
134# ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted
135# 1999-09-17, and published 1999-09-21.  The official publication is at:
136# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
137# Regretfully, you have to subscribe (and pay) for the on-line version....
138#
139# (2001-06-12):
140# the timezone for Argentina will not change next Sunday.
141# Apparently it will do so on Sunday 24th....
142# http://ar.clarin.com/diario/2001-06-12/s-03501.htm
143#
144# (2001-06-25):
145# Last Friday (yes, the last working day before the date of the change), the
146# Senate annulled the 1999 law that introduced the changes later postponed.
147# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
148# It remains the vote of the Deputies..., but it will be the same....
149# This kind of things had always been done this way in Argentina.
150# We are still -03:00 all year round in all of the country.
151#
152# From Steffen Thorsen (2007-12-21):
153# A user (Leonardo Chaim) reported that Argentina will adopt DST....
154# all of the country (all Zone-entries) are affected.  News reports like
155# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate
156# that Argentina will use DST next year as well, from October to
157# March, although exact rules are not given.
158#
159# From Jesper Nørgaard Welen (2007-12-26)
160# The last hurdle of Argentina DST is over, the proposal was approved in
161# the lower chamber too (Diputados) with a vote 192 for and 2 against.
162# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
163# the original scanned proposal, where the dates and the zero hours are
164# clear and unambiguous...This is the article about final approval:
165# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
166#
167# From Paul Eggert (2007-12-22):
168# For dates after mid-2008, the following rules are my guesses and
169# are quite possibly wrong, but are more likely than no DST at all.
170
171# From Alexander Krivenyshev (2008-09-05):
172# As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
173# Argentina will start DST on Sunday October 19, 2008.
174#
175# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
176# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
177
178# From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07)
179# via Rodrigo Severo:
180# Argentinian law No. 25.155 is no longer valid.
181# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
182# The new one is law No. 26.350
183# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
184# So there is no summer time in Argentina for now.
185
186# From Mariano Absatz (2008-10-20):
187# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST
188# in Argentina from 2008-10-19 until 2009-03-15.
189# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
190#
191
192# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer
193# 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La
194# Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego
195# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
196#
197# Press release 235 dated Saturday October 18th, from the Government of the
198# Province of Jujuy saying it will not apply DST either (even when it was not
199# included in Decree 1705/2008).
200# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
201
202# From fullinet (2009-10-18):
203# As announced in
204# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356
205# (an official .gob.ar) under title: "Sin Cambio de Hora"
206# (English: "No hour change").
207#
208# "Por el momento, el Gobierno Nacional resolvió no modificar la hora
209# oficial, decisión que estaba en estudio para su implementación el
210# domingo 18 de octubre. Desde el Ministerio de Planificación se anunció
211# que la Argentina hoy, en estas condiciones meteorológicas, no necesita
212# la modificación del huso horario, ya que 2009 nos encuentra con
213# crecimiento en la producción y distribución energética."
214
215Rule	Arg	2007	only	-	Dec	30	0:00	1:00	S
216Rule	Arg	2008	2009	-	Mar	Sun>=15	0:00	0	-
217Rule	Arg	2008	only	-	Oct	Sun>=15	0:00	1:00	S
218
219# From Mariano Absatz (2004-05-21):
220# Today it was officially published that the Province of Mendoza is changing
221# its timezone this winter... starting tomorrow night....
222# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf
223# From Paul Eggert (2004-05-24):
224# It's Law No. 7,210.  This change is due to a public power emergency, so for
225# now we'll assume it's for this year only.
226#
227# From Paul Eggert (2014-08-09):
228# Hora de verano para la República Argentina
229# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html
230# says that standard time in Argentina from 1894-10-31
231# to 1920-05-01 was -4:16:48.25.  Go with this more-precise value
232# over Shanks & Pottenger.
233#
234# From Mariano Absatz (2004-06-05):
235# These media articles from a major newspaper mostly cover the current state:
236# http://www.lanacion.com.ar/04/05/27/de_604825.asp
237# http://www.lanacion.com.ar/04/05/28/de_605203.asp
238#
239# The following eight (8) provinces pulled clocks back to UTC-04:00 at
240# midnight Monday May 31st. (that is, the night between 05/31 and 06/01).
241# Apparently, all nine provinces would go back to UTC-03:00 at the same
242# time in October 17th.
243#
244# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,
245# Tierra del Fuego, Tucumán.
246#
247# From Mariano Absatz (2004-06-14):
248# ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00
249# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's
250# annoyance with the change is much higher than the power savings obtained....
251#
252# From Gwillim Law (2004-06-14):
253# http://www.lanacion.com.ar/04/06/10/de_609078.asp ...
254#     "The time change in Tierra del Fuego was a conflicted decision from
255#   the start.  The government had decreed that the measure would take
256#   effect on June 1, but a normative error forced the new time to begin
257#   three days earlier, from a Saturday to a Sunday....
258# Our understanding was that the change was originally scheduled to take place
259# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other
260# provinces).  Sunday was May 30, only two days earlier.  So the article
261# contains a contradiction.  I would give more credence to the Saturday/Sunday
262# date than the "three days earlier" phrase, and conclude that Tierra del
263# Fuego set its clocks back at 2004-05-30 00:00.
264#
265# From Steffen Thorsen (2004-10-05):
266# The previous law 7210 which changed the province of Mendoza's time zone
267# back in May have been modified slightly in a new law 7277, which set the
268# new end date to 2004-09-26 (original date was 2004-10-17).
269# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf
270#
271# From Mariano Absatz (2004-10-05):
272# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
273# Sunday, May 30th and Monday, May 31st.  It changed back to UTC-03:00
274# at midnight between Saturday, July 24th and Sunday, July 25th....
275# http://www.sanjuan.gov.ar/prensa/archivo/000329.html
276# http://www.sanjuan.gov.ar/prensa/archivo/000426.html
277# http://www.sanjuan.gov.ar/prensa/archivo/000441.html
278
279# From Alex Krivenyshev (2008-01-17):
280# Here are articles that Argentina Province San Luis is planning to end DST
281# as earlier as upcoming Monday January 21, 2008 or February 2008:
282#
283# Provincia argentina retrasa reloj y marca diferencia con resto del país
284# (Argentine Province delayed clock and mark difference with the rest of the
285# country)
286# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
287#
288# Es inminente que en San Luis atrasen una hora los relojes
289# (It is imminent in San Luis clocks one hour delay)
290# http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
291# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
292
293# From Jesper Nørgaard Welen (2008-01-18):
294# The page of the San Luis provincial government
295# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
296# confirms what Alex Krivenyshev has earlier sent to the tz
297# emailing list about that San Luis plans to return to standard
298# time much earlier than the rest of the country. It also
299# confirms that upon request the provinces San Juan and Mendoza
300# refused to follow San Luis in this change.
301#
302# The change is supposed to take place Monday the 21st at 0:00
303# hours. As far as I understand it if this goes ahead, we need
304# a new timezone for San Luis (although there are also documented
305# independent changes in the southamerica file of San Luis in
306# 1990 and 1991 which has not been confirmed).
307
308# From Jesper Nørgaard Welen (2008-01-25):
309# Unfortunately the below page has become defunct, about the San Luis
310# time change. Perhaps because it now is part of a group of pages "Most
311# important pages of 2008."
312#
313# You can use
314# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834
315# instead it seems. Or use "Buscador" from the main page of the San Luis
316# government, and fill in "huso" and click OK, and you will get 3 pages
317# from which the first one is identical to the above.
318
319# From Mariano Absatz (2008-01-28):
320# I can confirm that the Province of San Luis (and so far only that
321# province) decided to go back to UTC-3 effective midnight Jan 20th 2008
322# (that is, Monday 21st at 0:00 is the time the clocks were delayed back
323# 1 hour), and they intend to keep UTC-3 as their timezone all year round
324# (that is, unless they change their mind any minute now).
325#
326# So we'll have to add yet another city to 'southamerica' (I think San
327# Luis city is the mos populated city in the Province, so it'd be
328# America/Argentina/San_Luis... of course I can't remember if San Luis's
329# history of particular changes goes along with Mendoza or San Juan :-(
330# (I only remember not being able to collect hard facts about San Luis
331# back in 2004, when these provinces changed to UTC-4 for a few days, I
332# mailed them personally and never got an answer).
333
334# From Paul Eggert (2014-08-12):
335# Unless otherwise specified, data entries are from Shanks & Pottenger through
336# 1992, from the IATA otherwise.  As noted below, Shanks & Pottenger say that
337# America/Cordoba split into 6 subregions during 1991/1992, one of which
338# was America/San_Luis, but we haven't verified this yet so for now we'll
339# keep America/Cordoba a single region rather than splitting it into the
340# other 5 subregions.
341
342# From Mariano Absatz (2009-03-13):
343# Yesterday (with our usual 2-day notice) the Province of San Luis
344# decided that next Sunday instead of "staying" @utc-03:00 they will go
345# to utc-04:00 until the second Saturday in October...
346#
347# The press release is at
348# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102
349# (I couldn't find the decree, but www.sanluis.gov.ar
350# is the official page for the Province Government.)
351#
352# There's also a note in only one of the major national papers ...
353# http://www.lanacion.com.ar/nota.asp?nota_id=1107912
354#
355# The press release says [quick and dirty translation]:
356# ... announced that next Sunday, at 00:00, Puntanos (the San Luis
357# inhabitants) will have to turn back one hour their clocks
358#
359# Since then, San Luis will establish its own Province timezone. Thus,
360# during 2009, this timezone change will run from 00:00 the third Sunday
361# in March until 24:00 of the second Saturday in October.
362
363# From Mariano Absatz (2009-10-16):
364# ...the Province of San Luis is a case in itself.
365#
366# The Law at
367# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
368# is ambiguous because establishes a calendar from the 2nd Sunday in
369# October at 0:00 thru the 2nd Saturday in March at 24:00 and the
370# complement of that starting on the 2nd Sunday of March at 0:00 and
371# ending on the 2nd Saturday of March at 24:00.
372#
373# This clearly breaks every time the 1st of March or October is a Sunday.
374#
375# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
376# Sunday of October and March.
377#
378# The problem is that the changes in the rest of the Provinces that did
379# change in 2007/2008, were made according to the Federal Law and Decrees
380# that did so on the 3rd Sunday of October and March.
381#
382# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
383# (October 11th) at 0:00.
384#
385# So I guess a new set of rules, besides "Arg", must be made and the last
386# America/Argentina/San_Luis entries should change to use these...
387#
388# I'm enclosing a patch that does what I say... regretfully, the San Luis
389# timezone must be called "WART/WARST" even when most of the time (like,
390# right now) WARST == ART... that is, since last Sunday, all the country
391# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
392# of the country calls it "ART".
393# ...
394
395# From Alexander Krivenyshev (2010-04-09):
396# According to news reports from El Diario de la República Province San
397# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
398# after April 11, 2010 - will continue to have same time as rest of
399# Argentina (UTC-3) (no DST).
400#
401# Confirmaron la prórroga del huso horario de verano (Spanish)
402# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
403# or (some English translation):
404# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
405
406# From Mariano Absatz (2010-04-12):
407# yes...I can confirm this...and given that San Luis keeps calling
408# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
409# rules...San Luis is still using "Western ARgentina Time" and it got
410# stuck on Summer daylight savings time even though the summer is over.
411
412# From Paul Eggert (2013-09-05):
413# Perhaps San Luis operates on the legal fiction that it is at UTC-4
414# with perpetual summer time, but ordinary usage typically seems to
415# just say it's at UTC-3; see, for example,
416# http://es.wikipedia.org/wiki/Hora_oficial_argentina
417# We've documented similar situations as being plain changes to
418# standard time, so let's do that here too.  This does not change UTC
419# offsets, only tm_isdst and the time zone abbreviations.  One minor
420# plus is that this silences a zic complaint that there's no POSIX TZ
421# setting for time stamps past 2038.
422
423# From Paul Eggert (2013-02-21):
424# Milne says Córdoba time was -4:16:48.2.  Round to the nearest second.
425
426# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
427#
428# Buenos Aires (BA), Capital Federal (CF),
429Zone America/Argentina/Buenos_Aires -3:53:48 - LMT	1894 Oct 31
430			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time
431			-4:00	-	ART	1930 Dec
432			-4:00	Arg	AR%sT	1969 Oct  5
433			-3:00	Arg	AR%sT	1999 Oct  3
434			-4:00	Arg	AR%sT	2000 Mar  3
435			-3:00	Arg	AR%sT
436#
437# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
438# Chaco (CC), Formosa (FM), Santiago del Estero (SE)
439#
440# Shanks & Pottenger also make the following claims, which we haven't verified:
441# - Formosa switched to -3:00 on 1991-01-07.
442# - Misiones switched to -3:00 on 1990-12-29.
443# - Chaco switched to -3:00 on 1991-01-04.
444# - Santiago del Estero switched to -4:00 on 1991-04-01,
445#   then to -3:00 on 1991-04-26.
446#
447Zone America/Argentina/Cordoba -4:16:48 - LMT	1894 Oct 31
448			-4:16:48 -	CMT	1920 May
449			-4:00	-	ART	1930 Dec
450			-4:00	Arg	AR%sT	1969 Oct  5
451			-3:00	Arg	AR%sT	1991 Mar  3
452			-4:00	-	WART	1991 Oct 20
453			-3:00	Arg	AR%sT	1999 Oct  3
454			-4:00	Arg	AR%sT	2000 Mar  3
455			-3:00	Arg	AR%sT
456#
457# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
458Zone America/Argentina/Salta -4:21:40 - LMT	1894 Oct 31
459			-4:16:48 -	CMT	1920 May
460			-4:00	-	ART	1930 Dec
461			-4:00	Arg	AR%sT	1969 Oct  5
462			-3:00	Arg	AR%sT	1991 Mar  3
463			-4:00	-	WART	1991 Oct 20
464			-3:00	Arg	AR%sT	1999 Oct  3
465			-4:00	Arg	AR%sT	2000 Mar  3
466			-3:00	Arg	AR%sT	2008 Oct 18
467			-3:00	-	ART
468#
469# Tucumán (TM)
470Zone America/Argentina/Tucuman -4:20:52 - LMT	1894 Oct 31
471			-4:16:48 -	CMT	1920 May
472			-4:00	-	ART	1930 Dec
473			-4:00	Arg	AR%sT	1969 Oct  5
474			-3:00	Arg	AR%sT	1991 Mar  3
475			-4:00	-	WART	1991 Oct 20
476			-3:00	Arg	AR%sT	1999 Oct  3
477			-4:00	Arg	AR%sT	2000 Mar  3
478			-3:00	-	ART	2004 Jun  1
479			-4:00	-	WART	2004 Jun 13
480			-3:00	Arg	AR%sT
481#
482# La Rioja (LR)
483Zone America/Argentina/La_Rioja -4:27:24 - LMT	1894 Oct 31
484			-4:16:48 -	CMT	1920 May
485			-4:00	-	ART	1930 Dec
486			-4:00	Arg	AR%sT	1969 Oct  5
487			-3:00	Arg	AR%sT	1991 Mar  1
488			-4:00	-	WART	1991 May  7
489			-3:00	Arg	AR%sT	1999 Oct  3
490			-4:00	Arg	AR%sT	2000 Mar  3
491			-3:00	-	ART	2004 Jun  1
492			-4:00	-	WART	2004 Jun 20
493			-3:00	Arg	AR%sT	2008 Oct 18
494			-3:00	-	ART
495#
496# San Juan (SJ)
497Zone America/Argentina/San_Juan -4:34:04 - LMT	1894 Oct 31
498			-4:16:48 -	CMT	1920 May
499			-4:00	-	ART	1930 Dec
500			-4:00	Arg	AR%sT	1969 Oct  5
501			-3:00	Arg	AR%sT	1991 Mar  1
502			-4:00	-	WART	1991 May  7
503			-3:00	Arg	AR%sT	1999 Oct  3
504			-4:00	Arg	AR%sT	2000 Mar  3
505			-3:00	-	ART	2004 May 31
506			-4:00	-	WART	2004 Jul 25
507			-3:00	Arg	AR%sT	2008 Oct 18
508			-3:00	-	ART
509#
510# Jujuy (JY)
511Zone America/Argentina/Jujuy -4:21:12 -	LMT	1894 Oct 31
512			-4:16:48 -	CMT	1920 May
513			-4:00	-	ART	1930 Dec
514			-4:00	Arg	AR%sT	1969 Oct  5
515			-3:00	Arg	AR%sT	1990 Mar  4
516			-4:00	-	WART	1990 Oct 28
517			-4:00	1:00	WARST	1991 Mar 17
518			-4:00	-	WART	1991 Oct  6
519			-3:00	1:00	ARST	1992
520			-3:00	Arg	AR%sT	1999 Oct  3
521			-4:00	Arg	AR%sT	2000 Mar  3
522			-3:00	Arg	AR%sT	2008 Oct 18
523			-3:00	-	ART
524#
525# Catamarca (CT), Chubut (CH)
526Zone America/Argentina/Catamarca -4:23:08 - LMT	1894 Oct 31
527			-4:16:48 -	CMT	1920 May
528			-4:00	-	ART	1930 Dec
529			-4:00	Arg	AR%sT	1969 Oct  5
530			-3:00	Arg	AR%sT	1991 Mar  3
531			-4:00	-	WART	1991 Oct 20
532			-3:00	Arg	AR%sT	1999 Oct  3
533			-4:00	Arg	AR%sT	2000 Mar  3
534			-3:00	-	ART	2004 Jun  1
535			-4:00	-	WART	2004 Jun 20
536			-3:00	Arg	AR%sT	2008 Oct 18
537			-3:00	-	ART
538#
539# Mendoza (MZ)
540Zone America/Argentina/Mendoza -4:35:16 - LMT	1894 Oct 31
541			-4:16:48 -	CMT	1920 May
542			-4:00	-	ART	1930 Dec
543			-4:00	Arg	AR%sT	1969 Oct  5
544			-3:00	Arg	AR%sT	1990 Mar  4
545			-4:00	-	WART	1990 Oct 15
546			-4:00	1:00	WARST	1991 Mar  1
547			-4:00	-	WART	1991 Oct 15
548			-4:00	1:00	WARST	1992 Mar  1
549			-4:00	-	WART	1992 Oct 18
550			-3:00	Arg	AR%sT	1999 Oct  3
551			-4:00	Arg	AR%sT	2000 Mar  3
552			-3:00	-	ART	2004 May 23
553			-4:00	-	WART	2004 Sep 26
554			-3:00	Arg	AR%sT	2008 Oct 18
555			-3:00	-	ART
556#
557# San Luis (SL)
558
559Rule	SanLuis	2008	2009	-	Mar	Sun>=8	0:00	0	-
560Rule	SanLuis	2007	2008	-	Oct	Sun>=8	0:00	1:00	S
561
562Zone America/Argentina/San_Luis -4:25:24 - LMT	1894 Oct 31
563			-4:16:48 -	CMT	1920 May
564			-4:00	-	ART	1930 Dec
565			-4:00	Arg	AR%sT	1969 Oct  5
566			-3:00	Arg	AR%sT	1990
567			-3:00	1:00	ARST	1990 Mar 14
568			-4:00	-	WART	1990 Oct 15
569			-4:00	1:00	WARST	1991 Mar  1
570			-4:00	-	WART	1991 Jun  1
571			-3:00	-	ART	1999 Oct  3
572			-4:00	1:00	WARST	2000 Mar  3
573			-3:00	-	ART	2004 May 31
574			-4:00	-	WART	2004 Jul 25
575			-3:00	Arg	AR%sT	2008 Jan 21
576			-4:00	SanLuis	WAR%sT	2009 Oct 11
577			-3:00	-	ART
578#
579# Santa Cruz (SC)
580Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT	1894 Oct 31
581			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time
582			-4:00	-	ART	1930 Dec
583			-4:00	Arg	AR%sT	1969 Oct  5
584			-3:00	Arg	AR%sT	1999 Oct  3
585			-4:00	Arg	AR%sT	2000 Mar  3
586			-3:00	-	ART	2004 Jun  1
587			-4:00	-	WART	2004 Jun 20
588			-3:00	Arg	AR%sT	2008 Oct 18
589			-3:00	-	ART
590#
591# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
592Zone America/Argentina/Ushuaia -4:33:12 - LMT	1894 Oct 31
593			-4:16:48 -	CMT	1920 May    # Córdoba Mean Time
594			-4:00	-	ART	1930 Dec
595			-4:00	Arg	AR%sT	1969 Oct  5
596			-3:00	Arg	AR%sT	1999 Oct  3
597			-4:00	Arg	AR%sT	2000 Mar  3
598			-3:00	-	ART	2004 May 30
599			-4:00	-	WART	2004 Jun 20
600			-3:00	Arg	AR%sT	2008 Oct 18
601			-3:00	-	ART
602
603# Aruba
604Link America/Curacao America/Aruba
605
606# Bolivia
607# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
608Zone	America/La_Paz	-4:32:36 -	LMT	1890
609			-4:32:36 -	CMT	1931 Oct 15 # Calamarca MT
610			-4:32:36 1:00	BOST	1932 Mar 21 # Bolivia ST
611			-4:00	-	BOT	# Bolivia Time
612
613# Brazil
614
615# From Paul Eggert (1993-11-18):
616# The mayor of Rio recently attempted to change the time zone rules
617# just in his city, in order to leave more summer time for the tourist trade.
618# The rule change lasted only part of the day;
619# the federal government refused to follow the city's rules, and business
620# was in a chaos, so the mayor backed down that afternoon.
621
622# From IATA SSIM (1996-02):
623# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
624# Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
625# Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
626# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
627# [The last three states are new to this issue of the IATA SSIM.]
628
629# From Gwillim Law (1996-10-07):
630# Geography, history (Tocantins was part of Goiás until 1989), and other
631# sources of time zone information lead me to believe that AL, SE, and TO were
632# always in BR1, and so the only change was whether or not they observed DST....
633# The earliest issue of the SSIM I have is 2/91.  Each issue from then until
634# 9/95 says that DST is observed only in the ten states I quoted from 9/95,
635# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
636# (UTC-4)....  The other two time zones given for Brazil are BR3, which is
637# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
638# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
639# become part of the state of Pernambuco).  The boundary between BR1 and BR2
640# has never been clearly stated.  They've simply been called East and West.
641# However, some conclusions can be drawn from another IATA manual: the Airline
642# Coding Directory, which lists close to 400 airports in Brazil.  For each
643# airport it gives a time zone which is coded to the SSIM.  From that
644# information, I'm led to conclude that the states of Amapá (AP), Ceará (CE),
645# Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do
646# Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST.
647
648# From Marcos Tadeu (1998-09-27):
649# Brazilian official page <http://pcdsh01.on.br/verao1.html>
650
651# From Jesper Nørgaard (2000-11-03):
652# [For an official list of which regions in Brazil use which time zones, see:]
653# http://pcdsh01.on.br/Fusbr.htm
654# http://pcdsh01.on.br/Fusbrhv.htm
655
656# From Celso Doria via David Madeo (2002-10-09):
657# The reason for the delay this year has to do with elections in Brazil.
658#
659# Unlike in the United States, elections in Brazil are 100% computerized and
660# the results are known almost immediately.  Yesterday, it was the first
661# round of the elections when 115 million Brazilians voted for President,
662# Governor, Senators, Federal Deputies, and State Deputies.  Nobody is
663# counting (or re-counting) votes anymore and we know there will be a second
664# round for the Presidency and also for some Governors.  The 2nd round will
665# take place on October 27th.
666#
667# The reason why the DST will only begin November 3rd is that the thousands
668# of electoral machines used cannot have their time changed, and since the
669# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,
670# the Government decided to postpone DST, instead of changing the Constitution
671# (maybe, for the next elections, it will be possible to change the clock)...
672
673# From Rodrigo Severo (2004-10-04):
674# It's just the biannual change made necessary by the much hyped, supposedly
675# modern Brazilian eletronic voting machines which, apparently, can't deal
676# with a time change between the first and the second rounds of the elections.
677
678# From Steffen Thorsen (2007-09-20):
679# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:
680# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975
681
682# From Paul Schulze (2008-06-24):
683# ...by law number 11.662 of April 24, 2008 (published in the "Diario
684# Oficial da União"...) in Brazil there are changes in the timezones,
685# effective today (00:00am at June 24, 2008) as follows:
686#
687# a) The timezone UTC+5 is extinguished, with all the Acre state and the
688# part of the Amazonas state that had this timezone now being put to the
689# timezone UTC+4
690# b) The whole Pará state now is put at timezone UTC+3, instead of just
691# part of it, as was before.
692#
693# This change follows a proposal of senator Tiao Viana of Acre state, that
694# proposed it due to concerns about open television channels displaying
695# programs inappropriate to youths in the states that had the timezone
696# UTC+5 too early in the night. In the occasion, some more corrections
697# were proposed, trying to unify the timezones of any given state. This
698# change modifies timezone rules defined in decree 2.784 of 18 June,
699# 1913.
700
701# From Rodrigo Severo (2008-06-24):
702# Just correcting the URL:
703# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008
704#
705# As a result of the above Decree I believe the America/Rio_Branco
706# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall
707# be created to represent the...west side of the Pará State. I
708# suggest this new timezone be called Santarem as the most
709# important/populated city in the affected area.
710#
711# This new timezone would be the same as the Rio_Branco timezone up to
712# the 2008/06/24 change which would be to UTC-3 instead of UTC-4.
713
714# From Alex Krivenyshev (2008-06-24):
715# This is a quick reference page for New and Old Brazil Time Zones map.
716# http://www.worldtimezone.com/brazil-time-new-old.php
717#
718# - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05
719# (state Acre and the part of the Amazonas will be UTC/GMT-04) - western
720# part of Par state is moving to one timezone UTC-03 (from UTC-04).
721
722# From Paul Eggert (2002-10-10):
723# The official decrees referenced below are mostly taken from
724# Decretos sobre o Horário de Verão no Brasil.
725# http://pcdsh01.on.br/DecHV.html
726
727# From Steffen Thorsen (2008-08-29):
728# As announced by the government and many newspapers in Brazil late
729# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
730# it will end on 2009-02-15 (current rule for Brazil is fine). Based on
731# past years experience with the elections, there was a good chance that
732# the start was postponed to November, but it did not happen this year.
733#
734# It has not yet been posted to http://pcdsh01.on.br/DecHV.html
735#
736# An official page about it:
737# http://www.mme.gov.br/site/news/detail.do?newsId=16722
738# Note that this link does not always work directly, but must be accessed
739# by going to
740# http://www.mme.gov.br/first
741#
742# One example link that works directly:
743# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
744# (Portuguese)
745#
746# We have a written a short article about it as well:
747# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
748#
749# From Alexander Krivenyshev (2011-10-04):
750# State Bahia will return to Daylight savings time this year after 8 years off.
751# The announcement was made by Governor Jaques Wagner in an interview to a
752# television station in Salvador.
753
754# In Portuguese:
755# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
756# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
757
758# From Guilherme Bernardes Rodrigues (2011-10-07):
759# There is news in the media, however there is still no decree about it.
760# I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
761# official agency about time in Brazil, and she confirmed that the old rule is
762# still in force.
763
764# From Guilherme Bernardes Rodrigues (2011-10-14)
765# It's official, the President signed a decree that includes Bahia in summer
766# time.
767#	 [ and in a second message (same day): ]
768# I found the decree.
769#
770# DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011
771# Link :
772# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
773
774# From Kelley Cook (2012-10-16):
775# The governor of state of Bahia in Brazil announced on Thursday that
776# due to public pressure, he is reversing the DST policy they implemented
777# last year and will not be going to Summer Time on October 21st....
778# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
779
780# From Rodrigo Severo (2012-10-16):
781# Tocantins state will have DST.
782# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
783
784# From Steffen Thorsen (2013-09-20):
785# Tocantins in Brazil is very likely not to observe DST from October....
786# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
787# We will keep this article updated when this is confirmed:
788# http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
789
790# From Steffen Thorsen (2013-10-17):
791# http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
792# Senator Jorge Viana announced that Acre will change time zone on November 10.
793# He did not specify the time of the change, nor if western parts of Amazonas
794# will change as well.
795#
796# From Paul Eggert (2013-10-17):
797# For now, assume western Amazonas will change as well.
798
799# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
800# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
801# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
802Rule	Brazil	1931	only	-	Oct	 3	11:00	1:00	S
803Rule	Brazil	1932	1933	-	Apr	 1	 0:00	0	-
804Rule	Brazil	1932	only	-	Oct	 3	 0:00	1:00	S
805# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
806# revoked DST.
807# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
808# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
809Rule	Brazil	1949	1952	-	Dec	 1	 0:00	1:00	S
810Rule	Brazil	1950	only	-	Apr	16	 1:00	0	-
811Rule	Brazil	1951	1952	-	Apr	 1	 0:00	0	-
812# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)
813Rule	Brazil	1953	only	-	Mar	 1	 0:00	0	-
814# Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30)
815# revoked DST.
816# Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18)
817# established DST from 1963-10-23 00:00 to 1964-02-29 00:00
818# in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
819# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)
820# extended the above decree to all of the national territory on 12-09.
821Rule	Brazil	1963	only	-	Dec	 9	 0:00	1:00	S
822# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)
823# extended summer time by one day to 1964-03-01 00:00 (start of school).
824Rule	Brazil	1964	only	-	Mar	 1	 0:00	0	-
825# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27)
826Rule	Brazil	1965	only	-	Jan	31	 0:00	1:00	S
827Rule	Brazil	1965	only	-	Mar	31	 0:00	0	-
828# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22)
829Rule	Brazil	1965	only	-	Dec	 1	 0:00	1:00	S
830# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)
831Rule	Brazil	1966	1968	-	Mar	 1	 0:00	0	-
832Rule	Brazil	1966	1967	-	Nov	 1	 0:00	1:00	S
833# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)
834# revoked DST.
835# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27)
836Rule	Brazil	1985	only	-	Nov	 2	 0:00	1:00	S
837# Decree 92,310 (1986-01-21)
838# Decree 92,463 (1986-03-13)
839Rule	Brazil	1986	only	-	Mar	15	 0:00	0	-
840# Decree 93,316 (1986-10-01)
841Rule	Brazil	1986	only	-	Oct	25	 0:00	1:00	S
842Rule	Brazil	1987	only	-	Feb	14	 0:00	0	-
843# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22)
844Rule	Brazil	1987	only	-	Oct	25	 0:00	1:00	S
845Rule	Brazil	1988	only	-	Feb	 7	 0:00	0	-
846# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)
847# except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
848Rule	Brazil	1988	only	-	Oct	16	 0:00	1:00	S
849Rule	Brazil	1989	only	-	Jan	29	 0:00	0	-
850# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)
851# with the same exceptions
852Rule	Brazil	1989	only	-	Oct	15	 0:00	1:00	S
853Rule	Brazil	1990	only	-	Feb	11	 0:00	0	-
854# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)
855# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
856# Decree 99,629 (1990-10-19) adds BA, MT.
857Rule	Brazil	1990	only	-	Oct	21	 0:00	1:00	S
858Rule	Brazil	1991	only	-	Feb	17	 0:00	0	-
859# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)
860# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
861Rule	Brazil	1991	only	-	Oct	20	 0:00	1:00	S
862Rule	Brazil	1992	only	-	Feb	 9	 0:00	0	-
863# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)
864# adopted by same states.
865Rule	Brazil	1992	only	-	Oct	25	 0:00	1:00	S
866Rule	Brazil	1993	only	-	Jan	31	 0:00	0	-
867# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)
868# adopted by same states, plus AM.
869# Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22;
870# web page corrected 2004-01-07) adopted by same states, minus AM.
871# Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14)
872# adopted by same states, plus MT and TO.
873# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)
874# adds AL, SE.
875Rule	Brazil	1993	1995	-	Oct	Sun>=11	 0:00	1:00	S
876Rule	Brazil	1994	1995	-	Feb	Sun>=15	 0:00	0	-
877Rule	Brazil	1996	only	-	Feb	11	 0:00	0	-
878# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)
879# adopted by same states, minus AL, SE.
880Rule	Brazil	1996	only	-	Oct	 6	 0:00	1:00	S
881Rule	Brazil	1997	only	-	Feb	16	 0:00	0	-
882# From Daniel C. Sobral (1998-02-12):
883# In 1997, the DS began on October 6. The stated reason was that
884# because international television networks ignored Brazil's policy on DS,
885# they bought the wrong times on satellite for coverage of Pope's visit.
886# This year, the ending date of DS was postponed to March 1
887# to help dealing with the shortages of electric power.
888#
889# Decree 2,317 (1997-09-04), adopted by same states.
890Rule	Brazil	1997	only	-	Oct	 6	 0:00	1:00	S
891# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>
892# (1998-02-10)
893Rule	Brazil	1998	only	-	Mar	 1	 0:00	0	-
894# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)
895# adopted by the same states as before.
896Rule	Brazil	1998	only	-	Oct	11	 0:00	1:00	S
897Rule	Brazil	1999	only	-	Feb	21	 0:00	0	-
898# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>
899# (1999-08-23) adopted by same states.
900# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)
901# adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
902Rule	Brazil	1999	only	-	Oct	 3	 0:00	1:00	S
903Rule	Brazil	2000	only	-	Feb	27	 0:00	0	-
904# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)
905# adopted by the same states as before.
906# Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13)
907# repeals DST in PE and RR, effective 2000-10-15 00:00.
908# Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17)
909# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
910# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>
911# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
912Rule	Brazil	2000	2001	-	Oct	Sun>=8	 0:00	1:00	S
913Rule	Brazil	2001	2006	-	Feb	Sun>=15	 0:00	0	-
914# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
915# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm>
916Rule	Brazil	2002	only	-	Nov	 3	 0:00	1:00	S
917# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
918# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm>
919Rule	Brazil	2003	only	-	Oct	19	 0:00	1:00	S
920# Decree 5,223 (2004-10-01) reestablishes DST in MT.
921# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm>
922Rule	Brazil	2004	only	-	Nov	 2	 0:00	1:00	S
923# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),
924# adopted by the same states as before.
925Rule	Brazil	2005	only	-	Oct	16	 0:00	1:00	S
926# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),
927# adopted by the same states as before.
928Rule	Brazil	2006	only	-	Nov	 5	 0:00	1:00	S
929Rule	Brazil	2007	only	-	Feb	25	 0:00	0	-
930# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
931# adopted by the same states as before.
932Rule	Brazil	2007	only	-	Oct	Sun>=8	 0:00	1:00	S
933# From Frederico A. C. Neves (2008-09-10):
934# According to this decree
935# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
936# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
937# 3rd Feb Sunday. There is an exception on the return date when this is
938# the Carnival Sunday then the return date will be the next Sunday...
939Rule	Brazil	2008	max	-	Oct	Sun>=15	0:00	1:00	S
940Rule	Brazil	2008	2011	-	Feb	Sun>=15	0:00	0	-
941Rule	Brazil	2012	only	-	Feb	Sun>=22	0:00	0	-
942Rule	Brazil	2013	2014	-	Feb	Sun>=15	0:00	0	-
943Rule	Brazil	2015	only	-	Feb	Sun>=22	0:00	0	-
944Rule	Brazil	2016	2022	-	Feb	Sun>=15	0:00	0	-
945Rule	Brazil	2023	only	-	Feb	Sun>=22	0:00	0	-
946Rule	Brazil	2024	2025	-	Feb	Sun>=15	0:00	0	-
947Rule	Brazil	2026	only	-	Feb	Sun>=22	0:00	0	-
948Rule	Brazil	2027	2033	-	Feb	Sun>=15	0:00	0	-
949Rule	Brazil	2034	only	-	Feb	Sun>=22	0:00	0	-
950Rule	Brazil	2035	2036	-	Feb	Sun>=15	0:00	0	-
951Rule	Brazil	2037	only	-	Feb	Sun>=22	0:00	0	-
952# From Arthur David Olson (2008-09-29):
953# The next is wrong in some years but is better than nothing.
954Rule	Brazil	2038	max	-	Feb	Sun>=15	0:00	0	-
955
956# The latest ruleset listed above says that the following states observe DST:
957# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
958
959# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
960#
961# Fernando de Noronha (administratively part of PE)
962Zone America/Noronha	-2:09:40 -	LMT	1914
963			-2:00	Brazil	FN%sT	1990 Sep 17
964			-2:00	-	FNT	1999 Sep 30
965			-2:00	Brazil	FN%sT	2000 Oct 15
966			-2:00	-	FNT	2001 Sep 13
967			-2:00	Brazil	FN%sT	2002 Oct  1
968			-2:00	-	FNT
969# Other Atlantic islands have no permanent settlement.
970# These include Trindade and Martim Vaz (administratively part of ES),
971# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
972# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
973# it also included the Penedos.
974#
975# Amapá (AP), east Pará (PA)
976# East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
977# The division between east and west Pará is the river Xingu.
978# In the north a very small part from the river Javary (now Jari I guess,
979# the border with Amapá) to the Amazon, then to the Xingu.
980Zone America/Belem	-3:13:56 -	LMT	1914
981			-3:00	Brazil	BR%sT	1988 Sep 12
982			-3:00	-	BRT
983#
984# west Pará (PA)
985# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
986Zone America/Santarem	-3:38:48 -	LMT	1914
987			-4:00	Brazil	AM%sT	1988 Sep 12
988			-4:00	-	AMT	2008 Jun 24  0:00
989			-3:00	-	BRT
990#
991# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
992# Paraíba (PB)
993Zone America/Fortaleza	-2:34:00 -	LMT	1914
994			-3:00	Brazil	BR%sT	1990 Sep 17
995			-3:00	-	BRT	1999 Sep 30
996			-3:00	Brazil	BR%sT	2000 Oct 22
997			-3:00	-	BRT	2001 Sep 13
998			-3:00	Brazil	BR%sT	2002 Oct  1
999			-3:00	-	BRT
1000#
1001# Pernambuco (PE) (except Atlantic islands)
1002Zone America/Recife	-2:19:36 -	LMT	1914
1003			-3:00	Brazil	BR%sT	1990 Sep 17
1004			-3:00	-	BRT	1999 Sep 30
1005			-3:00	Brazil	BR%sT	2000 Oct 15
1006			-3:00	-	BRT	2001 Sep 13
1007			-3:00	Brazil	BR%sT	2002 Oct  1
1008			-3:00	-	BRT
1009#
1010# Tocantins (TO)
1011Zone America/Araguaina	-3:12:48 -	LMT	1914
1012			-3:00	Brazil	BR%sT	1990 Sep 17
1013			-3:00	-	BRT	1995 Sep 14
1014			-3:00	Brazil	BR%sT	2003 Sep 24
1015			-3:00	-	BRT	2012 Oct 21
1016			-3:00	Brazil	BR%sT	2013 Sep
1017			-3:00	-	BRT
1018#
1019# Alagoas (AL), Sergipe (SE)
1020Zone America/Maceio	-2:22:52 -	LMT	1914
1021			-3:00	Brazil	BR%sT	1990 Sep 17
1022			-3:00	-	BRT	1995 Oct 13
1023			-3:00	Brazil	BR%sT	1996 Sep  4
1024			-3:00	-	BRT	1999 Sep 30
1025			-3:00	Brazil	BR%sT	2000 Oct 22
1026			-3:00	-	BRT	2001 Sep 13
1027			-3:00	Brazil	BR%sT	2002 Oct  1
1028			-3:00	-	BRT
1029#
1030# Bahia (BA)
1031# There are too many Salvadors elsewhere, so use America/Bahia instead
1032# of America/Salvador.
1033Zone America/Bahia	-2:34:04 -	LMT	1914
1034			-3:00	Brazil	BR%sT	2003 Sep 24
1035			-3:00	-	BRT	2011 Oct 16
1036			-3:00	Brazil	BR%sT	2012 Oct 21
1037			-3:00	-	BRT
1038#
1039# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
1040# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
1041# Santa Catarina (SC), Rio Grande do Sul (RS)
1042Zone America/Sao_Paulo	-3:06:28 -	LMT	1914
1043			-3:00	Brazil	BR%sT	1963 Oct 23  0:00
1044			-3:00	1:00	BRST	1964
1045			-3:00	Brazil	BR%sT
1046#
1047# Mato Grosso do Sul (MS)
1048Zone America/Campo_Grande -3:38:28 -	LMT	1914
1049			-4:00	Brazil	AM%sT
1050#
1051# Mato Grosso (MT)
1052Zone America/Cuiaba	-3:44:20 -	LMT	1914
1053			-4:00	Brazil	AM%sT	2003 Sep 24
1054			-4:00	-	AMT	2004 Oct  1
1055			-4:00	Brazil	AM%sT
1056#
1057# Rondônia (RO)
1058Zone America/Porto_Velho -4:15:36 -	LMT	1914
1059			-4:00	Brazil	AM%sT	1988 Sep 12
1060			-4:00	-	AMT
1061#
1062# Roraima (RR)
1063Zone America/Boa_Vista	-4:02:40 -	LMT	1914
1064			-4:00	Brazil	AM%sT	1988 Sep 12
1065			-4:00	-	AMT	1999 Sep 30
1066			-4:00	Brazil	AM%sT	2000 Oct 15
1067			-4:00	-	AMT
1068#
1069# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
1070# The great circle line from Tabatinga to Porto Acre divides
1071# east from west Amazonas.
1072Zone America/Manaus	-4:00:04 -	LMT	1914
1073			-4:00	Brazil	AM%sT	1988 Sep 12
1074			-4:00	-	AMT	1993 Sep 28
1075			-4:00	Brazil	AM%sT	1994 Sep 22
1076			-4:00	-	AMT
1077#
1078# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1079#	Eirunepé, Envira, Ipixuna
1080Zone America/Eirunepe	-4:39:28 -	LMT	1914
1081			-5:00	Brazil	AC%sT	1988 Sep 12
1082			-5:00	-	ACT	1993 Sep 28
1083			-5:00	Brazil	AC%sT	1994 Sep 22
1084			-5:00	-	ACT	2008 Jun 24  0:00
1085			-4:00	-	AMT	2013 Nov 10
1086			-5:00	-	ACT
1087#
1088# Acre (AC)
1089Zone America/Rio_Branco	-4:31:12 -	LMT	1914
1090			-5:00	Brazil	AC%sT	1988 Sep 12
1091			-5:00	-	ACT	2008 Jun 24  0:00
1092			-4:00	-	AMT	2013 Nov 10
1093			-5:00	-	ACT
1094
1095# Chile
1096
1097# From Paul Eggert (2015-04-03):
1098# Shanks & Pottenger says America/Santiago introduced standard time in
1099# 1890 and rounds its UTC offset to 70W40; guess that in practice this
1100# was the same offset as in 1916-1919.  It also says Pacific/Easter
1101# standardized on 109W22 in 1890; assume this didn't change the clocks.
1102#
1103# Dates for America/Santiago from 1910 to 2004 are primarily from
1104# the following source, cited by Oscar van Vlijmen (2006-10-08):
1105# [1] Chile Law
1106# http://www.webexhibits.org/daylightsaving/chile.html
1107# This contains a copy of a this official table:
1108# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1109# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1110# [1] needs several corrections, though.
1111#
1112# The first set of corrections is from:
1113# [2] History of the Official Time of Chile
1114# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06).  See:
1115# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1116# This is an English translation of:
1117# Historia de la hora oficial de Chile (retrieved 2012-10-24).  See:
1118# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1119# A fancier Spanish version (requiring mouse-clicking) is at:
1120# http://www.horaoficial.cl/historia_hora.html
1121# Conflicts between [1] and [2] were resolved as follows:
1122#
1123#  - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1124#    Boletín No. 1, Aviso No. 1 (1910).  Go with [2].
1125#
1126#  - [1] says SMT was -4:42:45, [2] says Chile's official time from
1127#    1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1128#    Astronomical Observatory (OAN), then located in what is now
1129#    Quinta Normal in Santiago.  Go with [2], rounding it to -4:42:46.
1130#
1131#  - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1132#    Boletín No. 22, Aviso No. 129/1918 (1918-08-23).  Go with [2].
1133#
1134#  - [1] does not give times for transitions; assume they occur
1135#    at midnight mainland time, the current common practice.  However,
1136#    go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1137#
1138# Another correction to [1] is from Jesper Nørgaard Welen, who
1139# wrote (2006-10-08), "I think that there are some obvious mistakes in
1140# the suggested link from Oscar van Vlijmen,... for instance entry 66
1141# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at
1142# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16
1143# respectively), but anyhow it clears up some doubts too."
1144#
1145# Data for Pacific/Easter from 1910 through 1967 come from Shanks &
1146# Pottenger.  After that, for lack of better info assume
1147# Pacific/Easter is always two hours behind America/Santiago;
1148# this is known to work for DST transitions starting in 2008 and
1149# may well be true for earlier transitions.
1150
1151# From Eduardo Krell (1995-10-19):
1152# The law says to switch to DST at midnight [24:00] on the second SATURDAY
1153# of October....  The law is the same for March and October.
1154# (1998-09-29):
1155# Because of the drought this year, the government decided to go into
1156# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1157# (unless there's another dry season next year, I guess).
1158
1159# From Julio I. Pacheco Troncoso (1999-03-18):
1160# Because of the same drought, the government decided to end DST later,
1161# on April 3, (one-time change).
1162
1163# From Germán Poo-Caamaño (2008-03-03):
1164# Due to drought, Chile extends Daylight Time in three weeks.  This
1165# is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1166# and Saturday 3/29 at 22:00 for Pacific/Easter)
1167# The Supreme Decree is located at
1168# http://www.shoa.cl/servicios/supremo316.pdf
1169#
1170# From José Miguel Garrido (2008-03-05):
1171# http://www.shoa.cl/noticias/2008/04hora/hora.htm
1172
1173# From Angel Chiang (2010-03-04):
1174# Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1175# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1176#
1177# From Arthur David Olson (2010-03-06):
1178# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1179
1180# From Glenn Eychaner (2011-03-28):
1181# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1182# In English:
1183# Chile's clocks will go back an hour this year on the 7th of May instead
1184# of this Saturday. They will go forward again the 3rd Saturday in
1185# August, not in October as they have since 1968.
1186
1187# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1188# As stated in the website of the Chilean Energy Ministry
1189# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1190# The Chilean Government has decided to postpone the entrance into winter time
1191# (to leave DST) from March 11 2012 to April 28th 2012....
1192# Quote from the website communication:
1193#
1194# 6. For the year 2012, the dates of entry into winter time will be as follows:
1195# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1196# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1197# of the same day.
1198# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1199# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1200# 01:00 on September 2.
1201
1202# From Steffen Thorsen (2013-02-15):
1203# According to several news sources, Chile has extended DST this year,
1204# they will end DST later and start DST earlier than planned.  They
1205# hope to save energy.  The new end date is 2013-04-28 00:00 and new
1206# start date is 2013-09-08 00:00....
1207# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1208
1209# From José Miguel Garrido (2014-02-19):
1210# Today appeared in the Diario Oficial a decree amending the time change
1211# dates to 2014.
1212# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1213# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1214# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1215
1216# From Eduardo Romero Urra (2015-03-03):
1217# Today has been published officially that Chile will use the DST time
1218# permanently until March 25 of 2017
1219# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1220#
1221# From Paul Eggert (2015-03-03):
1222# For now, assume that the extension will persist indefinitely.
1223
1224# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1225Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	S
1226Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
1227Rule	Chile	1968	only	-	Nov	 3	4:00u	1:00	S
1228Rule	Chile	1969	only	-	Mar	30	3:00u	0	-
1229Rule	Chile	1969	only	-	Nov	23	4:00u	1:00	S
1230Rule	Chile	1970	only	-	Mar	29	3:00u	0	-
1231Rule	Chile	1971	only	-	Mar	14	3:00u	0	-
1232Rule	Chile	1970	1972	-	Oct	Sun>=9	4:00u	1:00	S
1233Rule	Chile	1972	1986	-	Mar	Sun>=9	3:00u	0	-
1234Rule	Chile	1973	only	-	Sep	30	4:00u	1:00	S
1235Rule	Chile	1974	1987	-	Oct	Sun>=9	4:00u	1:00	S
1236Rule	Chile	1987	only	-	Apr	12	3:00u	0	-
1237Rule	Chile	1988	1990	-	Mar	Sun>=9	3:00u	0	-
1238Rule	Chile	1988	1989	-	Oct	Sun>=9	4:00u	1:00	S
1239Rule	Chile	1990	only	-	Sep	16	4:00u	1:00	S
1240Rule	Chile	1991	1996	-	Mar	Sun>=9	3:00u	0	-
1241Rule	Chile	1991	1997	-	Oct	Sun>=9	4:00u	1:00	S
1242Rule	Chile	1997	only	-	Mar	30	3:00u	0	-
1243Rule	Chile	1998	only	-	Mar	Sun>=9	3:00u	0	-
1244Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S
1245Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-
1246Rule	Chile	1999	2010	-	Oct	Sun>=9	4:00u	1:00	S
1247Rule	Chile	2000	2007	-	Mar	Sun>=9	3:00u	0	-
1248# N.B.: the end of March 29 in Chile is March 30 in Universal time,
1249# which is used below in specifying the transition.
1250Rule	Chile	2008	only	-	Mar	30	3:00u	0	-
1251Rule	Chile	2009	only	-	Mar	Sun>=9	3:00u	0	-
1252Rule	Chile	2010	only	-	Apr	Sun>=1	3:00u	0	-
1253Rule	Chile	2011	only	-	May	Sun>=2	3:00u	0	-
1254Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	S
1255Rule	Chile	2012	2015	-	Apr	Sun>=23	3:00u	0	-
1256Rule	Chile	2012	2014	-	Sep	Sun>=2	4:00u	1:00	S
1257# IATA SSIM anomalies: (1992-02) says 1992-03-14;
1258# (1996-09) says 1998-03-08.  Ignore these.
1259# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1260Zone America/Santiago	-4:42:46 -	LMT	1890
1261			-4:42:46 -	SMT	1910 Jan 10 # Santiago Mean Time
1262			-5:00	-	CLT	1916 Jul  1 # Chile Time
1263			-4:42:46 -	SMT	1918 Sep 10
1264			-4:00	-	CLT	1919 Jul  1
1265			-4:42:46 -	SMT	1927 Sep  1
1266			-5:00	Chile	CL%sT	1932 Sep  1
1267			-4:00	-	CLT	1942 Jun  1
1268			-5:00	-	CLT	1942 Aug  1
1269			-4:00	-	CLT	1946 Jul 15
1270			-4:00	1:00	CLST	1946 Sep  1 # central Chile
1271			-4:00	-	CLT	1947 Apr  1
1272			-5:00	-	CLT	1947 May 21 23:00
1273			-4:00	Chile	CL%sT	2015 Apr 26  3:00u
1274			-3:00	-	CLT
1275Zone Pacific/Easter	-7:17:28 -	LMT	1890
1276			-7:17:28 -	EMT	1932 Sep    # Easter Mean Time
1277			-7:00	Chile	EAS%sT	1982 Mar 14 3:00u # Easter Time
1278			-6:00	Chile	EAS%sT	2015 Apr 26 3:00u
1279			-5:00	-	EAST
1280#
1281# Salas y Gómez Island is uninhabited.
1282# Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1283# and Antarctic bases, are like America/Santiago.
1284
1285# Antarctic base using South American rules
1286# (See the file 'antarctica' for more.)
1287#
1288# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1289#
1290# From Ethan Dicks (1996-10-06):
1291# It keeps the same time as Punta Arenas, Chile, because, just like us
1292# and the South Pole, that's the other end of their supply line....
1293# I verified with someone who was there that since 1980,
1294# Palmer has followed Chile.  Prior to that, before the Falklands War,
1295# Palmer used to be supplied from Argentina.
1296#
1297# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1298Zone Antarctica/Palmer	0	-	zzz	1965
1299			-4:00	Arg	AR%sT	1969 Oct  5
1300			-3:00	Arg	AR%sT	1982 May
1301			-4:00	Chile	CL%sT	2015 Apr 26 3:00u
1302			-3:00	-	CLT
1303
1304# Colombia
1305
1306# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest.  He writes,
1307# "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1308
1309# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1310Rule	CO	1992	only	-	May	 3	0:00	1:00	S
1311Rule	CO	1993	only	-	Apr	 4	0:00	0	-
1312# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1313Zone	America/Bogota	-4:56:16 -	LMT	1884 Mar 13
1314			-4:56:16 -	BMT	1914 Nov 23 # Bogotá Mean Time
1315			-5:00	CO	CO%sT	# Colombia Time
1316# Malpelo, Providencia, San Andres
1317# no information; probably like America/Bogota
1318
1319# Curaçao
1320
1321# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1322#
1323# From Paul Eggert (2006-03-22):
1324# Shanks & Pottenger say that The Bottom and Philipsburg have been at
1325# -4:00 since standard time was introduced on 1912-03-02; and that
1326# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1327# 1912-02-02 to 1965-01-01.  The former is dubious, since S&P also say
1328# Saba Island has been like Curaçao.
1329# This all predates our 1970 cutoff, though.
1330#
1331# By July 2007 Curaçao and St Maarten are planned to become
1332# associated states within the Netherlands, much like Aruba;
1333# Bonaire, Saba and St Eustatius would become directly part of the
1334# Netherlands as Kingdom Islands.  This won't affect their time zones
1335# though, as far as we know.
1336#
1337# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1338Zone	America/Curacao	-4:35:47 -	LMT	1912 Feb 12 # Willemstad
1339			-4:30	-	ANT	1965 # Netherlands Antilles Time
1340			-4:00	-	AST
1341
1342# From Arthur David Olson (2011-06-15):
1343# use links for places with new iso3166 codes.
1344# The name "Lower Prince's Quarter" is both longer than fourteen characters
1345# and contains an apostrophe; use "Lower_Princes" below.
1346
1347Link	America/Curacao	America/Lower_Princes	# Sint Maarten
1348Link	America/Curacao	America/Kralendijk	# Caribbean Netherlands
1349
1350# Ecuador
1351#
1352# Milne says the Central and South American Telegraph Company used -5:24:15.
1353#
1354# From Paul Eggert (2007-03-04):
1355# Apparently Ecuador had a failed experiment with DST in 1992.
1356# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
1357# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
1358# talk about "hora Sixto".  Leave this alone for now, as we have no data.
1359#
1360# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1361Zone America/Guayaquil	-5:19:20 -	LMT	1890
1362			-5:14:00 -	QMT	1931 # Quito Mean Time
1363			-5:00	-	ECT	# Ecuador Time
1364Zone Pacific/Galapagos	-5:58:24 -	LMT	1931 # Puerto Baquerizo Moreno
1365			-5:00	-	ECT	1986
1366			-6:00	-	GALT	# Galápagos Time
1367
1368# Falklands
1369
1370# From Paul Eggert (2006-03-22):
1371# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1372# the IATA gives 1996-09-08.  Go with Shanks & Pottenger.
1373
1374# From Falkland Islands Government Office, London (2001-01-22)
1375# via Jesper Nørgaard:
1376# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1377# April 2001 and advance one hour to summer time at 2 am on Sunday 2
1378# September.  It is anticipated that the clocks will revert back at 2
1379# am on Sunday 21 April 2002 and advance to summer time at 2 am on
1380# Sunday 1 September.
1381
1382# From Rives McDow (2001-02-13):
1383#
1384# I have communicated several times with people there, and the last
1385# time I had communications that was helpful was in 1998.  Here is
1386# what was said then:
1387#
1388# "The general rule was that Stanley used daylight saving and the Camp
1389# did not. However for various reasons many people in the Camp have
1390# started to use daylight saving (known locally as 'Stanley Time')
1391# There is no rule as to who uses daylight saving - it is a matter of
1392# personal choice and so it is impossible to draw a map showing who
1393# uses it and who does not. Any list would be out of date as soon as
1394# it was produced. This year daylight saving ended on April 18/19th
1395# and started again on September 12/13th.  I do not know what the rule
1396# is, but can find out if you like.  We do not change at the same time
1397# as UK or Chile."
1398#
1399# I did have in my notes that the rule was "Second Saturday in Sep at
1400# 0:00 until third Saturday in Apr at 0:00".  I think that this does
1401# not agree in some cases with Shanks; is this true?
1402#
1403# Also, there is no mention in the list that some areas in the
1404# Falklands do not use DST.  I have found in my communications there
1405# that these areas are on the western half of East Falkland and all of
1406# West Falkland.  Stanley is the only place that consistently observes
1407# DST.  Again, as in other places in the world, the farmers don't like
1408# it.  West Falkland is almost entirely sheep farmers.
1409#
1410# I know one lady there that keeps a list of which farm keeps DST and
1411# which doesn't each year.  She runs a shop in Stanley, and says that
1412# the list changes each year.  She uses it to communicate to her
1413# customers, catching them when they are home for lunch or dinner.
1414
1415# From Paul Eggert (2001-03-05):
1416# For now, we'll just record the time in Stanley, since we have no
1417# better info.
1418
1419# From Steffen Thorsen (2011-04-01):
1420# The Falkland Islands will not turn back clocks this winter, but stay on
1421# daylight saving time.
1422#
1423# One source:
1424# http://www.falklandnews.com/public/story.cfm?get=5914&source=3
1425#
1426# We have gotten this confirmed by a clerk of the legislative assembly:
1427# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the
1428# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3
1429# hours) on the first Sunday of September at 0200hrs.
1430#
1431# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands
1432# will not revert to local mean time, but clocks will remain on Summer
1433# time (UTC/GMT - 3 hours) throughout the whole of 2011.  Any long term
1434# change to local time following the trial period will be notified.
1435#
1436# From Andrew Newman (2012-02-24)
1437# A letter from Justin McPhee, Chief Executive,
1438# Cable & Wireless Falkland Islands (dated 2012-02-22)
1439# states...
1440#   The current Atlantic/Stanley entry under South America expects the
1441#   clocks to go back to standard Falklands Time (FKT) on the 15th April.
1442#   The database entry states that in 2011 Stanley was staying on fixed
1443#   summer time on a trial basis only.  FIG need to contact IANA and/or
1444#   the maintainers of the database to inform them we're adopting
1445#   the same policy this year and suggest recommendations for future years.
1446#
1447# For now we will assume permanent summer time for the Falklands
1448# until advised differently (to apply for 2012 and beyond, after the 2011
1449# experiment was apparently successful.)
1450# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1451Rule	Falk	1937	1938	-	Sep	lastSun	0:00	1:00	S
1452Rule	Falk	1938	1942	-	Mar	Sun>=19	0:00	0	-
1453Rule	Falk	1939	only	-	Oct	1	0:00	1:00	S
1454Rule	Falk	1940	1942	-	Sep	lastSun	0:00	1:00	S
1455Rule	Falk	1943	only	-	Jan	1	0:00	0	-
1456Rule	Falk	1983	only	-	Sep	lastSun	0:00	1:00	S
1457Rule	Falk	1984	1985	-	Apr	lastSun	0:00	0	-
1458Rule	Falk	1984	only	-	Sep	16	0:00	1:00	S
1459Rule	Falk	1985	2000	-	Sep	Sun>=9	0:00	1:00	S
1460Rule	Falk	1986	2000	-	Apr	Sun>=16	0:00	0	-
1461Rule	Falk	2001	2010	-	Apr	Sun>=15	2:00	0	-
1462Rule	Falk	2001	2010	-	Sep	Sun>=1	2:00	1:00	S
1463# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1464Zone Atlantic/Stanley	-3:51:24 -	LMT	1890
1465			-3:51:24 -	SMT	1912 Mar 12 # Stanley Mean Time
1466			-4:00	Falk	FK%sT	1983 May    # Falkland Is Time
1467			-3:00	Falk	FK%sT	1985 Sep 15
1468			-4:00	Falk	FK%sT	2010 Sep  5  2:00
1469			-3:00	-	FKST
1470
1471# French Guiana
1472# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1473Zone America/Cayenne	-3:29:20 -	LMT	1911 Jul
1474			-4:00	-	GFT	1967 Oct # French Guiana Time
1475			-3:00	-	GFT
1476
1477# Guyana
1478# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1479Zone	America/Guyana	-3:52:40 -	LMT	1915 Mar    # Georgetown
1480			-3:45	-	GBGT	1966 May 26 # Br Guiana Time
1481			-3:45	-	GYT	1975 Jul 31 # Guyana Time
1482			-3:00	-	GYT	1991
1483# IATA SSIM (1996-06) says -4:00.  Assume a 1991 switch.
1484			-4:00	-	GYT
1485
1486# Paraguay
1487#
1488# From Paul Eggert (2006-03-22):
1489# Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1490# and autumn transitions are 00:00 -> 23:00.  Go with pre-1999
1491# editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1492#
1493# From Waldemar Villamayor-Venialbo (2013-09-20):
1494# No time of the day is established for the adjustment, so people normally
1495# adjust their clocks at 0 hour of the given dates.
1496#
1497# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1498Rule	Para	1975	1988	-	Oct	 1	0:00	1:00	S
1499Rule	Para	1975	1978	-	Mar	 1	0:00	0	-
1500Rule	Para	1979	1991	-	Apr	 1	0:00	0	-
1501Rule	Para	1989	only	-	Oct	22	0:00	1:00	S
1502Rule	Para	1990	only	-	Oct	 1	0:00	1:00	S
1503Rule	Para	1991	only	-	Oct	 6	0:00	1:00	S
1504Rule	Para	1992	only	-	Mar	 1	0:00	0	-
1505Rule	Para	1992	only	-	Oct	 5	0:00	1:00	S
1506Rule	Para	1993	only	-	Mar	31	0:00	0	-
1507Rule	Para	1993	1995	-	Oct	 1	0:00	1:00	S
1508Rule	Para	1994	1995	-	Feb	lastSun	0:00	0	-
1509Rule	Para	1996	only	-	Mar	 1	0:00	0	-
1510# IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
1511# From Steffen Thorsen (2000-10-02):
1512# I have three independent reports that Paraguay changed to DST this Sunday
1513# (10-01).
1514#
1515# Translated by Gwillim Law (2001-02-27) from
1516# Noticias, a daily paper in Asunción, Paraguay (2000-10-01):
1517# http://www.diarionoticias.com.py/011000/nacional/naciona1.htm
1518# Starting at 0:00 today, the clock will be set forward 60 minutes, in
1519# fulfillment of Decree No. 7,273 of the Executive Power....  The time change
1520# system has been operating for several years.  Formerly there was a separate
1521# decree each year; the new law has the same effect, but permanently.  Every
1522# year, the time will change on the first Sunday of October; likewise, the
1523# clock will be set back on the first Sunday of March.
1524#
1525Rule	Para	1996	2001	-	Oct	Sun>=1	0:00	1:00	S
1526# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1527Rule	Para	1997	only	-	Feb	lastSun	0:00	0	-
1528# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1529# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1530Rule	Para	1998	2001	-	Mar	Sun>=1	0:00	0	-
1531# From Rives McDow (2002-02-28):
1532# A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the
1533# dst method to be from the first Sunday in September to the first Sunday in
1534# April.
1535Rule	Para	2002	2004	-	Apr	Sun>=1	0:00	0	-
1536Rule	Para	2002	2003	-	Sep	Sun>=1	0:00	1:00	S
1537#
1538# From Jesper Nørgaard Welen (2005-01-02):
1539# There are several sources that claim that Paraguay made
1540# a timezone rule change in autumn 2004.
1541# From Steffen Thorsen (2005-01-05):
1542# Decree 1,867 (2004-03-05)
1543# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
1544# http://www.presidencia.gov.py/decretos/D1867.pdf
1545Rule	Para	2004	2009	-	Oct	Sun>=15	0:00	1:00	S
1546Rule	Para	2005	2009	-	Mar	Sun>=8	0:00	0	-
1547# From Carlos Raúl Perasso (2010-02-18):
1548# By decree number 3958 issued yesterday
1549# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1550# Paraguay changes its DST schedule, postponing the March rule to April and
1551# modifying the October date. The decree reads:
1552# ...
1553# Art. 1. It is hereby established that from the second Sunday of the month of
1554# April of this year (2010), the official time is to be set back 60 minutes,
1555# and that on the first Sunday of the month of October, it is to be set
1556# forward 60 minutes, in all the territory of the Paraguayan Republic.
1557# ...
1558Rule	Para	2010	max	-	Oct	Sun>=1	0:00	1:00	S
1559Rule	Para	2010	2012	-	Apr	Sun>=8	0:00	0	-
1560#
1561# From Steffen Thorsen (2013-03-07):
1562# Paraguay will end DST on 2013-03-24 00:00....
1563# http://www.ande.gov.py/interna.php?id=1075
1564#
1565# From Carlos Raúl Perasso (2013-03-15):
1566# The change in Paraguay is now final.  Decree number 10780
1567# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1568# From Carlos Raúl Perasso (2014-02-28):
1569# Decree 1264 can be found at:
1570# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1571Rule	Para	2013	max	-	Mar	Sun>=22	0:00	0	-
1572
1573# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1574Zone America/Asuncion	-3:50:40 -	LMT	1890
1575			-3:50:40 -	AMT	1931 Oct 10 # Asunción Mean Time
1576			-4:00	-	PYT	1972 Oct    # Paraguay Time
1577			-3:00	-	PYT	1974 Apr
1578			-4:00	Para	PY%sT
1579
1580# Peru
1581#
1582# From Evelyn C. Leeper via Mark Brader (2003-10-26)
1583# <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1584# When we were in Peru in 1985-1986, they apparently switched over
1585# sometime between December 29 and January 3 while we were on the Amazon.
1586#
1587# From Paul Eggert (2006-03-22):
1588# Shanks & Pottenger don't have this transition.  Assume 1986 was like 1987.
1589
1590# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1591Rule	Peru	1938	only	-	Jan	 1	0:00	1:00	S
1592Rule	Peru	1938	only	-	Apr	 1	0:00	0	-
1593Rule	Peru	1938	1939	-	Sep	lastSun	0:00	1:00	S
1594Rule	Peru	1939	1940	-	Mar	Sun>=24	0:00	0	-
1595Rule	Peru	1986	1987	-	Jan	 1	0:00	1:00	S
1596Rule	Peru	1986	1987	-	Apr	 1	0:00	0	-
1597Rule	Peru	1990	only	-	Jan	 1	0:00	1:00	S
1598Rule	Peru	1990	only	-	Apr	 1	0:00	0	-
1599# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1600Rule	Peru	1994	only	-	Jan	 1	0:00	1:00	S
1601Rule	Peru	1994	only	-	Apr	 1	0:00	0	-
1602# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1603Zone	America/Lima	-5:08:12 -	LMT	1890
1604			-5:08:36 -	LMT	1908 Jul 28 # Lima Mean Time?
1605			-5:00	Peru	PE%sT	# Peru Time
1606
1607# South Georgia
1608# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1609Zone Atlantic/South_Georgia -2:26:08 -	LMT	1890 # Grytviken
1610			-2:00	-	GST	# South Georgia Time
1611
1612# South Sandwich Is
1613# uninhabited; scientific personnel have wintered
1614
1615# Suriname
1616# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1617Zone America/Paramaribo	-3:40:40 -	LMT	1911
1618			-3:40:52 -	PMT	1935     # Paramaribo Mean Time
1619			-3:40:36 -	PMT	1945 Oct    # The capital moved?
1620			-3:30	-	NEGT	1975 Nov 20 # Dutch Guiana Time
1621			-3:30	-	SRT	1984 Oct    # Suriname Time
1622			-3:00	-	SRT
1623
1624# Trinidad and Tobago
1625# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1626Zone America/Port_of_Spain -4:06:04 -	LMT	1912 Mar 2
1627			-4:00	-	AST
1628
1629# These all agree with Trinidad and Tobago since 1970.
1630Link America/Port_of_Spain America/Anguilla
1631Link America/Port_of_Spain America/Antigua
1632Link America/Port_of_Spain America/Dominica
1633Link America/Port_of_Spain America/Grenada
1634Link America/Port_of_Spain America/Guadeloupe
1635Link America/Port_of_Spain America/Marigot	# St Martin (French part)
1636Link America/Port_of_Spain America/Montserrat
1637Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1638Link America/Port_of_Spain America/St_Kitts	# St Kitts & Nevis
1639Link America/Port_of_Spain America/St_Lucia
1640Link America/Port_of_Spain America/St_Thomas	# Virgin Islands (US)
1641Link America/Port_of_Spain America/St_Vincent
1642Link America/Port_of_Spain America/Tortola	# Virgin Islands (UK)
1643
1644# Uruguay
1645# From Paul Eggert (1993-11-18):
1646# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1647# From Shanks & Pottenger:
1648# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
1649# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1650Rule	Uruguay	1923	only	-	Oct	 2	 0:00	0:30	HS
1651Rule	Uruguay	1924	1926	-	Apr	 1	 0:00	0	-
1652Rule	Uruguay	1924	1925	-	Oct	 1	 0:00	0:30	HS
1653Rule	Uruguay	1933	1935	-	Oct	lastSun	 0:00	0:30	HS
1654# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1655Rule	Uruguay	1934	1936	-	Mar	Sat>=25	23:30s	0	-
1656Rule	Uruguay	1936	only	-	Nov	 1	 0:00	0:30	HS
1657Rule	Uruguay	1937	1941	-	Mar	lastSun	 0:00	0	-
1658# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
1659Rule	Uruguay	1937	1940	-	Oct	lastSun	 0:00	0:30	HS
1660# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
1661# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger.
1662Rule	Uruguay	1941	only	-	Aug	 1	 0:00	0:30	HS
1663Rule	Uruguay	1942	only	-	Jan	 1	 0:00	0	-
1664Rule	Uruguay	1942	only	-	Dec	14	 0:00	1:00	S
1665Rule	Uruguay	1943	only	-	Mar	14	 0:00	0	-
1666Rule	Uruguay	1959	only	-	May	24	 0:00	1:00	S
1667Rule	Uruguay	1959	only	-	Nov	15	 0:00	0	-
1668Rule	Uruguay	1960	only	-	Jan	17	 0:00	1:00	S
1669Rule	Uruguay	1960	only	-	Mar	 6	 0:00	0	-
1670Rule	Uruguay	1965	1967	-	Apr	Sun>=1	 0:00	1:00	S
1671Rule	Uruguay	1965	only	-	Sep	26	 0:00	0	-
1672Rule	Uruguay	1966	1967	-	Oct	31	 0:00	0	-
1673Rule	Uruguay	1968	1970	-	May	27	 0:00	0:30	HS
1674Rule	Uruguay	1968	1970	-	Dec	 2	 0:00	0	-
1675Rule	Uruguay	1972	only	-	Apr	24	 0:00	1:00	S
1676Rule	Uruguay	1972	only	-	Aug	15	 0:00	0	-
1677Rule	Uruguay	1974	only	-	Mar	10	 0:00	0:30	HS
1678Rule	Uruguay	1974	only	-	Dec	22	 0:00	1:00	S
1679Rule	Uruguay	1976	only	-	Oct	 1	 0:00	0	-
1680Rule	Uruguay	1977	only	-	Dec	 4	 0:00	1:00	S
1681Rule	Uruguay	1978	only	-	Apr	 1	 0:00	0	-
1682Rule	Uruguay	1979	only	-	Oct	 1	 0:00	1:00	S
1683Rule	Uruguay	1980	only	-	May	 1	 0:00	0	-
1684Rule	Uruguay	1987	only	-	Dec	14	 0:00	1:00	S
1685Rule	Uruguay	1988	only	-	Mar	14	 0:00	0	-
1686Rule	Uruguay	1988	only	-	Dec	11	 0:00	1:00	S
1687Rule	Uruguay	1989	only	-	Mar	12	 0:00	0	-
1688Rule	Uruguay	1989	only	-	Oct	29	 0:00	1:00	S
1689# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2,
1690# and that 1992/3's DST was from 10-25 to 03-01.  Go with IATA.
1691Rule	Uruguay	1990	1992	-	Mar	Sun>=1	 0:00	0	-
1692Rule	Uruguay	1990	1991	-	Oct	Sun>=21	 0:00	1:00	S
1693Rule	Uruguay	1992	only	-	Oct	18	 0:00	1:00	S
1694Rule	Uruguay	1993	only	-	Feb	28	 0:00	0	-
1695# From Eduardo Cota (2004-09-20):
1696# The Uruguayan government has decreed a change in the local time....
1697# http://www.presidencia.gub.uy/decretos/2004091502.htm
1698Rule	Uruguay	2004	only	-	Sep	19	 0:00	1:00	S
1699# From Steffen Thorsen (2005-03-11):
1700# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1701# save energy ... it was postponed two weeks....
1702# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1703Rule	Uruguay	2005	only	-	Mar	27	 2:00	0	-
1704# From Eduardo Cota (2005-09-27):
1705# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1706# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1707# 02:00 local time, official time in Uruguay will be at GMT -2.
1708Rule	Uruguay	2005	only	-	Oct	 9	 2:00	1:00	S
1709Rule	Uruguay	2006	only	-	Mar	12	 2:00	0	-
1710# From Jesper Nørgaard Welen (2006-09-06):
1711# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1712#
1713# From Steffen Thorsen (2015-06-30):
1714# ... it looks like they will not be using DST the coming summer:
1715# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
1716# http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
1717# From Paul Eggert (2015-06-30):
1718# Apparently restaurateurs complained that DST caused people to go to the beach
1719# instead of out to dinner.
1720# From Pablo Camargo (2015-07-13):
1721# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
1722# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
1723Rule	Uruguay	2006	2014	-	Oct	Sun>=1	 2:00	1:00	S
1724Rule	Uruguay	2007	2015	-	Mar	Sun>=8	 2:00	0	-
1725# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1726Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28
1727			-3:44:44 -	MMT	1920 May  1 # Montevideo MT
1728			-3:30	Uruguay	UY%sT	1942 Dec 14 # Uruguay Time
1729			-3:00	Uruguay	UY%sT
1730
1731# Venezuela
1732#
1733# From Paul Eggert (2015-07-28):
1734# For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1735# http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1736#
1737# From John Stainforth (2007-11-28):
1738# ... the change for Venezuela originally expected for 2007-12-31 has
1739# been brought forward to 2007-12-09.  The official announcement was
1740# published today in the "Gaceta Oficial de la República Bolivariana
1741# de Venezuela, número 38.819" (official document for all laws or
1742# resolution publication)
1743# http://www.globovision.com/news.php?nid=72208
1744
1745# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
1746Zone	America/Caracas	-4:27:44 -	LMT	1890
1747			-4:27:40 -	CMT	1912 Feb 12 # Caracas Mean Time?
1748			-4:30	-	VET	1965 Jan  1  0:00 # Venezuela T.
1749			-4:00	-	VET	2007 Dec  9  3:00
1750			-4:30	-	VET
1751