4 # This code is free software; you can redistribute it and/or modify it
5 # under the terms of the GNU General Public License version 2 only, as
6 # published by the Free Software Foundation. Oracle designates this
7 # particular file as subject to the "Classpath" exception as provided
8 # by Oracle in the LICENSE file that accompanied this code.
9 #
10 # This code is distributed in the hope that it will be useful, but WITHOUT
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 # version 2 for more details (a copy is included in the LICENSE file that
14 # accompanied this code).
15 #
16 # You should have received a copy of the GNU General Public License version
17 # 2 along with this work; if not, write to the Free Software Foundation,
18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 #
20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 # or visit www.oracle.com if you need additional information or have any
22 # questions.
23 #
24 # <pre>
25 # This file is in the public domain, so clarified as of
26 # 2009-05-17 by Arthur David Olson.
27
28 # This data is by no means authoritative; if you think you know better,
29 # go ahead and edit the file (and please send any changes to
30 # tz@iana.org for general use in the future).
31
32 # From Paul Eggert (2006-03-22):
33 # A good source for time zone historical data outside the U.S. is
34 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
35 # San Diego: ACS Publications, Inc. (2003).
36 #
37 # For data circa 1899, a common source is:
38 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
39 # <http://www.jstor.org/stable/1774359>.
40 #
41 # Gwillim Law writes that a good source
42 # for recent time zone data is the International Air Transport
43 # Association's Standard Schedules Information Manual (IATA SSIM),
44 # published semiannually. Law sent in several helpful summaries
45 # of the IATA's data after 1990.
46 #
47 # Except where otherwise noted, Shanks & Pottenger is the source for
48 # entries through 1990, and IATA SSIM is the source for entries afterwards.
49 #
50 # Earlier editions of these tables used the North American style (e.g. ARST and
51 # ARDT for Argentine Standard and Daylight Time), but the following quote
52 # suggests that it's better to use European style (e.g. ART and ARST).
53 # I suggest the use of _Summer time_ instead of the more cumbersome
54 # _daylight-saving time_. _Summer time_ seems to be in general use
55 # in Europe and South America.
56 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
57 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
58 #
59 # Earlier editions of these tables also used the North American style
60 # for time zones in Brazil, but this was incorrect, as Brazilians say
61 # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in
62 # the railroad sector, writes (1999-07-06):
63 # The subject of time zones is currently a matter of discussion/debate in
64 # Brazil. Let's say that "the Brasilia time" is considered the
65 # "official time" because Brasilia is the capital city.
66 # The other three time zones are called "Brasilia time "minus one" or
67 # "plus one" or "plus two". As far as I know there is no such
68 # name/designation as "Eastern Time" or "Central Time".
69 # So I invented the following (English-language) abbreviations for now.
70 # Corrections are welcome!
71 # std dst
72 # -2:00 FNT FNST Fernando de Noronha
73 # -3:00 BRT BRST Brasilia
74 # -4:00 AMT AMST Amazon
75 # -5:00 ACT ACST Acre
76
77 ###############################################################################
78
79 ###############################################################################
80
81 # Argentina
82
83 # From Bob Devine (1988-01-28):
84 # Argentina: first Sunday in October to first Sunday in April since 1976.
85 # Double Summer time from 1969 to 1974. Switches at midnight.
86
87 # From U. S. Naval Observatory (1988-01-199):
88 # ARGENTINA 3 H BEHIND UTC
89
90 # From Hernan G. Otero (1995-06-26):
91 # I am sending modifications to the Argentine time zone table...
92 # AR was chosen because they are the ISO letters that represent Argentina.
93
94 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
95 Rule Arg 1930 only - Dec 1 0:00 1:00 S
96 Rule Arg 1931 only - Apr 1 0:00 0 -
97 Rule Arg 1931 only - Oct 15 0:00 1:00 S
98 Rule Arg 1932 1940 - Mar 1 0:00 0 -
99 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S
100 Rule Arg 1940 only - Jul 1 0:00 1:00 S
101 Rule Arg 1941 only - Jun 15 0:00 0 -
102 Rule Arg 1941 only - Oct 15 0:00 1:00 S
103 Rule Arg 1943 only - Aug 1 0:00 0 -
104 Rule Arg 1943 only - Oct 15 0:00 1:00 S
105 Rule Arg 1946 only - Mar 1 0:00 0 -
106 Rule Arg 1946 only - Oct 1 0:00 1:00 S
107 Rule Arg 1963 only - Oct 1 0:00 0 -
108 Rule Arg 1963 only - Dec 15 0:00 1:00 S
109 Rule Arg 1964 1966 - Mar 1 0:00 0 -
110 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S
111 Rule Arg 1967 only - Apr 2 0:00 0 -
112 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S
113 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 -
114 Rule Arg 1974 only - Jan 23 0:00 1:00 S
115 Rule Arg 1974 only - May 1 0:00 0 -
116 Rule Arg 1988 only - Dec 1 0:00 1:00 S
117 #
118 # From Hernan G. Otero (1995-06-26):
119 # These corrections were contributed by InterSoft Argentina S.A.,
120 # obtaining the data from the:
121 # Talleres de Hidrografia Naval Argentina
122 # (Argentine Naval Hydrography Institute)
123 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 -
124 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
125 #
126 # From Hernan G. Otero (1995-06-26):
127 # From this moment on, the law that mandated the daylight saving
128 # time corrections was derogated and no more modifications
129 # to the time zones (for daylight saving) are now made.
130 #
131 # From Rives McDow (2000-01-10):
132 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
133 # which did not result in the switch of a time zone, as they stayed 9 hours
134 # from the International Date Line.
135 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
136 # From Paul Eggert (2007-12-28):
137 # DST was set to expire on March 5, not March 3, but since it was converted
138 # to standard time on March 3 it's more convenient for us to pretend that
139 # it ended on March 3.
140 Rule Arg 2000 only - Mar 3 0:00 0 -
141 #
142 # From Peter Gradelski via Steffen Thorsen (2000-03-01):
143 # We just checked with our Sao Paulo office and they say the government of
144 # Argentina decided not to become one of the countries that go on or off DST.
145 # So Buenos Aires should be -3 hours from GMT at all times.
146 #
147 # From Fabian L. Arce Jofre (2000-04-04):
148 # The law that claimed DST for Argentina was derogated by President Fernando
149 # de la Rua on March 2, 2000, because it would make people spend more energy
150 # in the winter time, rather than less. The change took effect on March 3.
151 #
152 # From Mariano Absatz (2001-06-06):
153 # one of the major newspapers here in Argentina said that the 1999
154 # Timezone Law (which never was effectively applied) will (would?) be
155 # in effect.... The article is at
156 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm
157 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted
158 # 1999-09-17, and published 1999-09-21. The official publication is at:
159 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
160 # Regretfully, you have to subscribe (and pay) for the on-line version....
161 #
162 # (2001-06-12):
163 # the timezone for Argentina will not change next Sunday.
164 # Apparently it will do so on Sunday 24th....
165 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm
166 #
167 # (2001-06-25):
168 # Last Friday (yes, the last working day before the date of the change), the
169 # Senate annulled the 1999 law that introduced the changes later postponed.
170 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
171 # It remains the vote of the Deputies..., but it will be the same....
172 # This kind of things had always been done this way in Argentina.
173 # We are still -03:00 all year round in all of the country.
174 #
175 # From Steffen Thorsen (2007-12-21):
176 # A user (Leonardo Chaim) reported that Argentina will adopt DST....
177 # all of the country (all Zone-entries) are affected. News reports like
178 # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate
179 # that Argentina will use DST next year as well, from October to
180 # March, although exact rules are not given.
181 #
182 # From Jesper Norgaard Welen (2007-12-26)
183 # The last hurdle of Argentina DST is over, the proposal was approved in
184 # the lower chamber too (Deputados) with a vote 192 for and 2 against.
185 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
186 # the original scanned proposal, where the dates and the zero hours are
187 # clear and unambiguous...This is the article about final approval:
188 # <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996">
189 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
190 # </a>
191 #
192 # From Paul Eggert (2007-12-22):
193 # For dates after mid-2008, the following rules are my guesses and
194 # are quite possibly wrong, but are more likely than no DST at all.
195
196 # From Alexander Krivenyshev (2008-09-05):
197 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
198 # Argentina will start DST on Sunday October 19, 2008.
199 #
200 # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html">
201 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
202 # </a>
203 # OR
204 # <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)">
205 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
206 # </a>
207
208 # From Rodrigo Severo (2008-10-06):
209 # Here is some info available at a Gentoo bug related to TZ on Argentina's DST:
210 # ...
211 # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 -------
212 # Hi, there is a problem with timezone-data-2008e and maybe with
213 # timezone-data-2008f
214 # Argentinian law [Number] 25.155 is no longer valid.
215 # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm">
216 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
217 # </a>
218 # The new one is law [Number] 26.350
219 # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm">
220 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
221 # </a>
222 # So there is no summer time in Argentina for now.
223
224 # From Mariano Absatz (2008-10-20):
225 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina
226 # From 2008-10-19 until 2009-03-15
227 # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01">
228 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
229 # </a>
230 #
231 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009:
232 # Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz
233 # and Tierra del Fuego
234 # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01">
235 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
236 # </a>
237 #
238 # Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying
239 # it will not apply DST either (even when it was not included in Decree 1705/2008)
240 # <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc">
241 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
242 # </a>
243
244 # From fullinet (2009-10-18):
245 # As announced in
246 # <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356">
247 # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356
248 # </a>
249 # (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change")
250 #
251 # "Por el momento, el Gobierno Nacional resolvio no modificar la hora
252 # oficial, decision que estaba en estudio para su implementacion el
253 # domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio
254 # que la Argentina hoy, en estas condiciones meteorologicas, no necesita
255 # la modificacion del huso horario, ya que 2009 nos encuentra con
256 # crecimiento en la produccion y distribucion energetica."
257
258 Rule Arg 2007 only - Dec 30 0:00 1:00 S
259 Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 -
260 Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
261
262 # From Mariano Absatz (2004-05-21):
263 # Today it was officially published that the Province of Mendoza is changing
264 # its timezone this winter... starting tomorrow night....
265 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf
266 # From Paul Eggert (2004-05-24):
267 # It's Law No. 7,210. This change is due to a public power emergency, so for
268 # now we'll assume it's for this year only.
269 #
270 # From Paul Eggert (2006-03-22):
271 # <a href="http://www.spicasc.net/horvera.html">
272 # Hora de verano para la Republica Argentina (2003-06-08)
273 # </a> says that standard time in Argentina from 1894-10-31
274 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value
275 # over Shanks & Pottenger.
276 #
277 # From Mariano Absatz (2004-06-05):
278 # These media articles from a major newspaper mostly cover the current state:
279 # http://www.lanacion.com.ar/04/05/27/de_604825.asp
280 # http://www.lanacion.com.ar/04/05/28/de_605203.asp
281 #
282 # The following eight (8) provinces pulled clocks back to UTC-04:00 at
283 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01).
284 # Apparently, all nine provinces would go back to UTC-03:00 at the same
285 # time in October 17th.
286 #
287 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,
288 # Tierra del Fuego, Tucuman.
289 #
290 # From Mariano Absatz (2004-06-14):
291 # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00
292 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's
293 # annoyance with the change is much higher than the power savings obtained....
294 #
295 # From Gwillim Law (2004-06-14):
296 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ...
297 # "The time change in Tierra del Fuego was a conflicted decision from
298 # the start. The government had decreed that the measure would take
299 # effect on June 1, but a normative error forced the new time to begin
300 # three days earlier, from a Saturday to a Sunday....
301 # Our understanding was that the change was originally scheduled to take place
302 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other
303 # provinces). Sunday was May 30, only two days earlier. So the article
304 # contains a contradiction. I would give more credence to the Saturday/Sunday
305 # date than the "three days earlier" phrase, and conclude that Tierra del
306 # Fuego set its clocks back at 2004-05-30 00:00.
307 #
308 # From Steffen Thorsen (2004-10-05):
309 # The previous law 7210 which changed the province of Mendoza's time zone
310 # back in May have been modified slightly in a new law 7277, which set the
311 # new end date to 2004-09-26 (original date was 2004-10-17).
312 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf
313 #
314 # From Mariano Absatz (2004-10-05):
315 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
316 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
317 # at midnight between Saturday, July 24th and Sunday, July 25th....
318 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html
319 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html
320 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html
321
322 # From Alex Krivenyshev (2008-01-17):
323 # Here are articles that Argentina Province San Luis is planning to end DST
324 # as earlier as upcoming Monday January 21, 2008 or February 2008:
325 #
326 # Provincia argentina retrasa reloj y marca diferencia con resto del pais
327 # (Argentine Province delayed clock and mark difference with the rest of the
328 # country)
329 # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel">
330 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
331 # </a>
332 #
333 # Es inminente que en San Luis atrasen una hora los relojes
334 # (It is imminent in San Luis clocks one hour delay)
335 # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414">
336 # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414
337 # </a>
338 #
339 # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html">
340 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
341 # </a>
342
343 # From Jesper Norgaard Welen (2008-01-18):
344 # The page of the San Luis provincial government
345 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812">
346 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
347 # </a>
348 # confirms what Alex Krivenyshev has earlier sent to the tz
349 # emailing list about that San Luis plans to return to standard
350 # time much earlier than the rest of the country. It also
351 # confirms that upon request the provinces San Juan and Mendoza
352 # refused to follow San Luis in this change.
353 #
354 # The change is supposed to take place Monday the 21.st at 0:00
355 # hours. As far as I understand it if this goes ahead, we need
356 # a new timezone for San Luis (although there are also documented
357 # independent changes in the southamerica file of San Luis in
358 # 1990 and 1991 which has not been confirmed).
359
360 # From Jesper Norgaard Welen (2008-01-25):
361 # Unfortunately the below page has become defunct, about the San Luis
362 # time change. Perhaps because it now is part of a group of pages "Most
363 # important pages of 2008."
364 #
365 # You can use
366 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834">
367 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834
368 # </a>
369 # instead it seems. Or use "Buscador" from the main page of the San Luis
370 # government, and fill in "huso" and click OK, and you will get 3 pages
371 # from which the first one is identical to the above.
372
373 # From Mariano Absatz (2008-01-28):
374 # I can confirm that the Province of San Luis (and so far only that
375 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008
376 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back
377 # 1 hour), and they intend to keep UTC-3 as their timezone all year round
378 # (that is, unless they change their mind any minute now).
379 #
380 # So we'll have to add yet another city to 'southamerica' (I think San
381 # Luis city is the mos populated city in the Province, so it'd be
382 # America/Argentina/San_Luis... of course I can't remember if San Luis's
383 # history of particular changes goes along with Mendoza or San Juan :-(
384 # (I only remember not being able to collect hard facts about San Luis
385 # back in 2004, when these provinces changed to UTC-4 for a few days, I
386 # mailed them personally and never got an answer).
387
388 # From Paul Eggert (2008-06-30):
389 # Unless otherwise specified, data are from Shanks & Pottenger through 1992,
390 # from the IATA otherwise. As noted below, Shanks & Pottenger say that
391 # America/Cordoba split into 6 subregions during 1991/1992, one of which
392 # was America/San_Luis, but we haven't verified this yet so for now we'll
393 # keep America/Cordoba a single region rather than splitting it into the
394 # other 5 subregions.
395
396 # From Mariano Absatz (2009-03-13):
397 # Yesterday (with our usual 2-day notice) the Province of San Luis
398 # decided that next Sunday instead of "staying" @utc-03:00 they will go
399 # to utc-04:00 until the second Saturday in October...
400 #
401 # The press release is at
402 # <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102">
403 # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102
404 # </a>
405 # (I couldn't find the decree, but
406 # <a href="http://www.sanluis.gov.ar">
407 # www.sanluis.gov.ar
408 # <a/>
409 # is the official page for the Province Government).
410 #
411 # There's also a note in only one of the major national papers ...
412 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912
413 #
414 # The press release says [quick and dirty translation]:
415 # ... announced that next Sunday, at 00:00, Puntanos (the San Luis
416 # inhabitants) will have to turn back one hour their clocks
417 #
418 # Since then, San Luis will establish its own Province timezone. Thus,
419 # during 2009, this timezone change will run from 00:00 the third Sunday
420 # in March until 24:00 of the second Saturday in October.
421
422 # From Mariano Absatz (2009-10-16):
423 # ...the Province of San Luis is a case in itself.
424 #
425 # The Law at
426 # <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>"
427 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
428 # </a>
429 # is ambiguous because establishes a calendar from the 2nd Sunday in
430 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the
431 # complement of that starting on the 2nd Sunday of March at 0:00 and
432 # ending on the 2nd Saturday of March at 24:00.
433 #
434 # This clearly breaks every time the 1st of March or October is a Sunday.
435 #
436 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
437 # Sunday of October and March.
438 #
439 # The problem is that the changes in the rest of the Provinces that did
440 # change in 2007/2008, were made according to the Federal Law and Decrees
441 # that did so on the 3rd Sunday of October and March.
442 #
443 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
444 # (October 11th) at 0:00.
445 #
446 # So I guess a new set of rules, besides "Arg", must be made and the last
447 # America/Argentina/San_Luis entries should change to use these...
448 #
449 # I'm enclosing a patch that does what I say... regretfully, the San Luis
450 # timezone must be called "WART/WARST" even when most of the time (like,
451 # right now) WARST == ART... that is, since last Sunday, all the country
452 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
453 # of the country calls it "ART".
454 # ...
455
456 # From Alexander Krivenyshev (2010-04-09):
457 # According to news reports from El Diario de la Republica Province San
458 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
459 # after April 11, 2010--will continue to have same time as rest of
460 # Argentina (UTC-3) (no DST).
461 #
462 # Confirmaron la prórroga del huso horario de verano (Spanish)
463 # <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9">
464 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
465 # </a>
466 # or (some English translation):
467 # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html">
468 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
469 # </a>
470
471 # From Mariano Absatz (2010-04-12):
472 # yes...I can confirm this...and given that San Luis keeps calling
473 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
474 # rules...San Luis is still using "Western ARgentina Time" and it got
475 # stuck on Summer daylight savings time even though the summer is over.
476
477 # From Paul Eggert (2013-09-05):
478 # Perhaps San Luis operates on the legal fiction that it is at UTC-4
479 # with perpetual summer time, but ordinary usage typically seems to
480 # just say it's at UTC-3; see, for example,
481 # <http://es.wikipedia.org/wiki/Hora_oficial_argentina>.
482 # We've documented similar situations as being plain changes to
483 # standard time, so let's do that here too. This does not change UTC
484 # offsets, only tm_isdst and the time zone abbreviations. One minor
485 # plus is that this silences a zic complaint that there's no POSIX TZ
486 # setting for time stamps past 2038.
487
488 # From Paul Eggert (2013-02-21):
489 # Milne says Cordoba time was -4:16:48.2. Round to the nearest second.
490
491 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
492 #
493 # Buenos Aires (BA), Capital Federal (CF),
494 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
495 -4:16:48 - CMT 1920 May # Cordoba Mean Time
496 -4:00 - ART 1930 Dec
497 -4:00 Arg AR%sT 1969 Oct 5
498 -3:00 Arg AR%sT 1999 Oct 3
499 -4:00 Arg AR%sT 2000 Mar 3
500 -3:00 Arg AR%sT
501 #
502 # Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN),
503 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
504 #
505 # Shanks & Pottenger also make the following claims, which we haven't verified:
506 # - Formosa switched to -3:00 on 1991-01-07.
507 # - Misiones switched to -3:00 on 1990-12-29.
508 # - Chaco switched to -3:00 on 1991-01-04.
509 # - Santiago del Estero switched to -4:00 on 1991-04-01,
510 # then to -3:00 on 1991-04-26.
511 #
512 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
513 -4:16:48 - CMT 1920 May
514 -4:00 - ART 1930 Dec
515 -4:00 Arg AR%sT 1969 Oct 5
516 -3:00 Arg AR%sT 1991 Mar 3
517 -4:00 - WART 1991 Oct 20
518 -3:00 Arg AR%sT 1999 Oct 3
519 -4:00 Arg AR%sT 2000 Mar 3
520 -3:00 Arg AR%sT
521 #
522 # Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN)
523 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
524 -4:16:48 - CMT 1920 May
525 -4:00 - ART 1930 Dec
526 -4:00 Arg AR%sT 1969 Oct 5
527 -3:00 Arg AR%sT 1991 Mar 3
528 -4:00 - WART 1991 Oct 20
529 -3:00 Arg AR%sT 1999 Oct 3
530 -4:00 Arg AR%sT 2000 Mar 3
531 -3:00 Arg AR%sT 2008 Oct 18
532 -3:00 - ART
533 #
534 # Tucuman (TM)
535 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31
536 -4:16:48 - CMT 1920 May
537 -4:00 - ART 1930 Dec
538 -4:00 Arg AR%sT 1969 Oct 5
539 -3:00 Arg AR%sT 1991 Mar 3
540 -4:00 - WART 1991 Oct 20
541 -3:00 Arg AR%sT 1999 Oct 3
542 -4:00 Arg AR%sT 2000 Mar 3
543 -3:00 - ART 2004 Jun 1
544 -4:00 - WART 2004 Jun 13
545 -3:00 Arg AR%sT
546 #
547 # La Rioja (LR)
548 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
549 -4:16:48 - CMT 1920 May
550 -4:00 - ART 1930 Dec
551 -4:00 Arg AR%sT 1969 Oct 5
552 -3:00 Arg AR%sT 1991 Mar 1
553 -4:00 - WART 1991 May 7
554 -3:00 Arg AR%sT 1999 Oct 3
626
627 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
628 -4:16:48 - CMT 1920 May
629 -4:00 - ART 1930 Dec
630 -4:00 Arg AR%sT 1969 Oct 5
631 -3:00 Arg AR%sT 1990
632 -3:00 1:00 ARST 1990 Mar 14
633 -4:00 - WART 1990 Oct 15
634 -4:00 1:00 WARST 1991 Mar 1
635 -4:00 - WART 1991 Jun 1
636 -3:00 - ART 1999 Oct 3
637 -4:00 1:00 WARST 2000 Mar 3
638 -3:00 - ART 2004 May 31
639 -4:00 - WART 2004 Jul 25
640 -3:00 Arg AR%sT 2008 Jan 21
641 -4:00 SanLuis WAR%sT 2009 Oct 11
642 -3:00 - ART
643 #
644 # Santa Cruz (SC)
645 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
646 -4:16:48 - CMT 1920 May # Cordoba Mean Time
647 -4:00 - ART 1930 Dec
648 -4:00 Arg AR%sT 1969 Oct 5
649 -3:00 Arg AR%sT 1999 Oct 3
650 -4:00 Arg AR%sT 2000 Mar 3
651 -3:00 - ART 2004 Jun 1
652 -4:00 - WART 2004 Jun 20
653 -3:00 Arg AR%sT 2008 Oct 18
654 -3:00 - ART
655 #
656 # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)
657 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
658 -4:16:48 - CMT 1920 May # Cordoba Mean Time
659 -4:00 - ART 1930 Dec
660 -4:00 Arg AR%sT 1969 Oct 5
661 -3:00 Arg AR%sT 1999 Oct 3
662 -4:00 Arg AR%sT 2000 Mar 3
663 -3:00 - ART 2004 May 30
664 -4:00 - WART 2004 Jun 20
665 -3:00 Arg AR%sT 2008 Oct 18
666 -3:00 - ART
667
668 # Aruba
669 Link America/Curacao America/Aruba
670
671 # Bolivia
672 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
673 Zone America/La_Paz -4:32:36 - LMT 1890
674 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
675 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
676 -4:00 - BOT # Bolivia Time
677
678 # Brazil
679
680 # From Paul Eggert (1993-11-18):
681 # The mayor of Rio recently attempted to change the time zone rules
682 # just in his city, in order to leave more summer time for the tourist trade.
683 # The rule change lasted only part of the day;
684 # the federal government refused to follow the city's rules, and business
685 # was in a chaos, so the mayor backed down that afternoon.
686
687 # From IATA SSIM (1996-02):
688 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
689 # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
690 # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO),
691 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
692 # [The last three states are new to this issue of the IATA SSIM.]
693
694 # From Gwillim Law (1996-10-07):
695 # Geography, history (Tocantins was part of Goias until 1989), and other
696 # sources of time zone information lead me to believe that AL, SE, and TO were
697 # always in BR1, and so the only change was whether or not they observed DST....
698 # The earliest issue of the SSIM I have is 2/91. Each issue from then until
699 # 9/95 says that DST is observed only in the ten states I quoted from 9/95,
700 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
701 # (UTC-4).... The other two time zones given for Brazil are BR3, which is
702 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
703 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
704 # become part of the state of Pernambuco). The boundary between BR1 and BR2
705 # has never been clearly stated. They've simply been called East and West.
706 # However, some conclusions can be drawn from another IATA manual: the Airline
707 # Coding Directory, which lists close to 400 airports in Brazil. For each
708 # airport it gives a time zone which is coded to the SSIM. From that
709 # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE),
710 # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
711 # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
712
713 # From Marcos Tadeu (1998-09-27):
714 # <a href="http://pcdsh01.on.br/verao1.html">
715 # Brazilian official page
716 # </a>
717
718 # From Jesper Norgaard (2000-11-03):
719 # [For an official list of which regions in Brazil use which time zones, see:]
720 # http://pcdsh01.on.br/Fusbr.htm
721 # http://pcdsh01.on.br/Fusbrhv.htm
722
723 # From Celso Doria via David Madeo (2002-10-09):
724 # The reason for the delay this year has to do with elections in Brazil.
725 #
726 # Unlike in the United States, elections in Brazil are 100% computerized and
727 # the results are known almost immediately. Yesterday, it was the first
728 # round of the elections when 115 million Brazilians voted for President,
729 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is
730 # counting (or re-counting) votes anymore and we know there will be a second
731 # round for the Presidency and also for some Governors. The 2nd round will
732 # take place on October 27th.
733 #
734 # The reason why the DST will only begin November 3rd is that the thousands
735 # of electoral machines used cannot have their time changed, and since the
736 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,
737 # the Government decided to postpone DST, instead of changing the Constitution
738 # (maybe, for the next elections, it will be possible to change the clock)...
739
740 # From Rodrigo Severo (2004-10-04):
741 # It's just the biannual change made necessary by the much hyped, supposedly
742 # modern Brazilian eletronic voting machines which, apparently, can't deal
743 # with a time change between the first and the second rounds of the elections.
744
745 # From Steffen Thorsen (2007-09-20):
746 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:
747 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975
748
749 # From Paul Schulze (2008-06-24):
750 # ...by law number 11.662 of April 24, 2008 (published in the "Diario
751 # Oficial da Uniao"...) in Brazil there are changes in the timezones,
752 # effective today (00:00am at June 24, 2008) as follows:
753 #
754 # a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the
755 # part of the Amazonas state that had this timezone now being put to the
756 # timezone UTC+4
757 # b) The whole Para state now is put at timezone UTC+3, instead of just
758 # part of it, as was before.
759 #
760 # This change follows a proposal of senator Tiao Viana of Acre state, that
761 # proposed it due to concerns about open television channels displaying
762 # programs inappropriate to youths in the states that had the timezone
763 # UTC+5 too early in the night. In the occasion, some more corrections
764 # were proposed, trying to unify the timezones of any given state. This
765 # change modifies timezone rules defined in decree 2.784 of 18 June,
766 # 1913.
767
768 # From Rodrigo Severo (2008-06-24):
769 # Just correcting the URL:
770 # <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008">
771 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008
772 # </a>
773 #
774 # As a result of the above Decree I believe the America/Rio_Branco
775 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall
776 # be created to represent the...west side of the Para State. I
777 # suggest this new timezone be called Santarem as the most
778 # important/populated city in the affected area.
779 #
780 # This new timezone would be the same as the Rio_Branco timezone up to
781 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4.
782
783 # From Alex Krivenyshev (2008-06-24):
784 # This is a quick reference page for New and Old Brazil Time Zones map.
785 # <a href="http://www.worldtimezone.com/brazil-time-new-old.php">
786 # http://www.worldtimezone.com/brazil-time-new-old.php
787 # </a>
788 #
789 # - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05
790 # (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western
791 # part of Par state is moving to one timezone UTC- 03 (from UTC -04).
792
793 # From Paul Eggert (2002-10-10):
794 # The official decrees referenced below are mostly taken from
795 # <a href="http://pcdsh01.on.br/DecHV.html">
796 # Decretos sobre o Horario de Verao no Brasil
797 # </a>.
798
799 # From Steffen Thorsen (2008-08-29):
800 # As announced by the government and many newspapers in Brazil late
801 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
802 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on
803 # past years experience with the elections, there was a good chance that
804 # the start was postponed to November, but it did not happen this year.
805 #
806 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html
807 #
808 # An official page about it:
809 # <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722">
810 # http://www.mme.gov.br/site/news/detail.do?newsId=16722
811 # </a>
812 # Note that this link does not always work directly, but must be accessed
813 # by going to
814 # <a href="http://www.mme.gov.br/first">
815 # http://www.mme.gov.br/first
816 # </a>
817 #
818 # One example link that works directly:
819 # <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54">
820 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
821 # (Portuguese)
822 # </a>
823 #
824 # We have a written a short article about it as well:
825 # <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html">
826 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
827 # </a>
828 #
829 # From Alexander Krivenyshev (2011-10-04):
830 # State Bahia will return to Daylight savings time this year after 8 years off.
831 # The announcement was made by Governor Jaques Wagner in an interview to a
832 # television station in Salvador.
833
834 # In Portuguese:
835 # <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html">
836 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
837 # </a> and
838 # <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html">
839 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
840 # </a>
841
842 # From Guilherme Bernardes Rodrigues (2011-10-07):
843 # There is news in the media, however there is still no decree about it.
844 # I just send a e-mail to Zulmira Brandao at
845 # <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the
846 # official agency about time in Brazil, and she confirmed that the old rule is
847 # still in force.
848
849 # From Guilherme Bernardes Rodrigues (2011-10-14)
850 # It's official, the President signed a decree that includes Bahia in summer
851 # time.
852 # [ and in a second message (same day): ]
853 # I found the decree.
854 #
855 # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011
856 # Link :
857 # <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6">
858 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
859 # </a>
860
861 # From Kelley Cook (2012-10-16):
862 # The governor of state of Bahia in Brazil announced on Thursday that
863 # due to public pressure, he is reversing the DST policy they implemented
864 # last year and will not be going to Summer Time on October 21st....
865 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
866
867 # From Rodrigo Severo (2012-10-16):
868 # Tocantins state will have DST.
869 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
870
871 # From Steffen Thorsen (2013-09-20):
872 # Tocantins in Brazil is very likely not to observe DST from October....
873 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
874 # We will keep this article updated when this is confirmed:
875 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
876
877 # From Steffen Thorsen (2013-10-17):
878 # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
879 # Senator Jorge Viana announced that Acre will change time zone on November 10.
880 # He did not specify the time of the change, nor if western parts of Amazonas
881 # will change as well.
882 #
883 # From Paul Eggert (2013-10-17):
884 # For now, assume western Amazonas will change as well.
885
886 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
887 # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01)
888 # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10)
889 Rule Brazil 1931 only - Oct 3 11:00 1:00 S
890 Rule Brazil 1932 1933 - Apr 1 0:00 0 -
891 Rule Brazil 1932 only - Oct 3 0:00 1:00 S
892 # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
893 # revoked DST.
894 # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24)
895 # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13)
896 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
897 Rule Brazil 1950 only - Apr 16 1:00 0 -
898 Rule Brazil 1951 1952 - Apr 1 0:00 0 -
899 # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24)
900 Rule Brazil 1953 only - Mar 1 0:00 0 -
901 # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30)
902 # revoked DST.
903 # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18)
904 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00
905 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
906 # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03)
907 # extended the above decree to all of the national territory on 12-09.
908 Rule Brazil 1963 only - Dec 9 0:00 1:00 S
909 # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25)
910 # extended summer time by one day to 1964-03-01 00:00 (start of school).
911 Rule Brazil 1964 only - Mar 1 0:00 0 -
912 # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27)
913 Rule Brazil 1965 only - Jan 31 0:00 1:00 S
914 Rule Brazil 1965 only - Mar 31 0:00 0 -
915 # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22)
916 Rule Brazil 1965 only - Dec 1 0:00 1:00 S
917 # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18)
918 Rule Brazil 1966 1968 - Mar 1 0:00 0 -
919 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
920 # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15)
921 # revoked DST.
922 # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27)
923 Rule Brazil 1985 only - Nov 2 0:00 1:00 S
924 # Decree 92,310 (1986-01-21)
925 # Decree 92,463 (1986-03-13)
926 Rule Brazil 1986 only - Mar 15 0:00 0 -
927 # Decree 93,316 (1986-10-01)
928 Rule Brazil 1986 only - Oct 25 0:00 1:00 S
929 Rule Brazil 1987 only - Feb 14 0:00 0 -
930 # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22)
931 Rule Brazil 1987 only - Oct 25 0:00 1:00 S
932 Rule Brazil 1988 only - Feb 7 0:00 0 -
933 # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12)
934 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
935 Rule Brazil 1988 only - Oct 16 0:00 1:00 S
936 Rule Brazil 1989 only - Jan 29 0:00 0 -
937 # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21)
938 # with the same exceptions
939 Rule Brazil 1989 only - Oct 15 0:00 1:00 S
940 Rule Brazil 1990 only - Feb 11 0:00 0 -
941 # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17)
942 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
943 # Decree 99,629 (1990-10-19) adds BA, MT.
944 Rule Brazil 1990 only - Oct 21 0:00 1:00 S
945 Rule Brazil 1991 only - Feb 17 0:00 0 -
946 # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25)
947 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
948 Rule Brazil 1991 only - Oct 20 0:00 1:00 S
949 Rule Brazil 1992 only - Feb 9 0:00 0 -
950 # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16)
951 # adopted by same states.
952 Rule Brazil 1992 only - Oct 25 0:00 1:00 S
953 Rule Brazil 1993 only - Jan 31 0:00 0 -
954 # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28)
955 # adopted by same states, plus AM.
956 # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22;
957 # web page corrected 2004-01-07) adopted by same states, minus AM.
958 # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14)
959 # adopted by same states, plus MT and TO.
960 # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13)
961 # adds AL, SE.
962 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S
963 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -
964 Rule Brazil 1996 only - Feb 11 0:00 0 -
965 # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04)
966 # adopted by same states, minus AL, SE.
967 Rule Brazil 1996 only - Oct 6 0:00 1:00 S
968 Rule Brazil 1997 only - Feb 16 0:00 0 -
969 # From Daniel C. Sobral (1998-02-12):
970 # In 1997, the DS began on October 6. The stated reason was that
971 # because international television networks ignored Brazil's policy on DS,
972 # they bought the wrong times on satellite for coverage of Pope's visit.
973 # This year, the ending date of DS was postponed to March 1
974 # to help dealing with the shortages of electric power.
975 #
976 # Decree 2,317 (1997-09-04), adopted by same states.
977 Rule Brazil 1997 only - Oct 6 0:00 1:00 S
978 # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a>
979 # (1998-02-10)
980 Rule Brazil 1998 only - Mar 1 0:00 0 -
981 # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11)
982 # adopted by the same states as before.
983 Rule Brazil 1998 only - Oct 11 0:00 1:00 S
984 Rule Brazil 1999 only - Feb 21 0:00 0 -
985 # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a>
986 # (1999-08-23) adopted by same states.
987 # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30)
988 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
989 Rule Brazil 1999 only - Oct 3 0:00 1:00 S
990 Rule Brazil 2000 only - Feb 27 0:00 0 -
991 # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06)
992 # adopted by the same states as before.
993 # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13)
994 # repeals DST in PE and RR, effective 2000-10-15 00:00.
995 # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17)
996 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
997 # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
998 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
999 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S
1000 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 -
1001 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
1002 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a>
1003 Rule Brazil 2002 only - Nov 3 0:00 1:00 S
1004 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
1005 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a>
1006 Rule Brazil 2003 only - Oct 19 0:00 1:00 S
1007 # Decree 5,223 (2004-10-01) reestablishes DST in MT.
1008 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a>
1009 Rule Brazil 2004 only - Nov 2 0:00 1:00 S
1010 # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19),
1011 # adopted by the same states as before.
1012 Rule Brazil 2005 only - Oct 16 0:00 1:00 S
1013 # Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03),
1014 # adopted by the same states as before.
1015 Rule Brazil 2006 only - Nov 5 0:00 1:00 S
1016 Rule Brazil 2007 only - Feb 25 0:00 0 -
1017 # Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26),
1018 # adopted by the same states as before.
1019 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
1020 # From Frederico A. C. Neves (2008-09-10):
1021 # According to this decree
1022 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm">
1023 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
1024 # </a>
1025 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
1026 # 3rd Feb Sunday. There is an exception on the return date when this is
1027 # the Carnival Sunday then the return date will be the next Sunday...
1028 Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
1029 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
1030 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
1031 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
1032 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
1033 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
1034 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
1035 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
1036 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
1037 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
1038 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
1039 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
1040 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
1041 # From Arthur David Olson (2008-09-29):
1042 # The next is wrong in some years but is better than nothing.
1043 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
1044
1045 # The latest ruleset listed above says that the following states observe DST:
1046 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
1047
1048 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1049 #
1050 # Fernando de Noronha (administratively part of PE)
1051 Zone America/Noronha -2:09:40 - LMT 1914
1052 -2:00 Brazil FN%sT 1990 Sep 17
1053 -2:00 - FNT 1999 Sep 30
1054 -2:00 Brazil FN%sT 2000 Oct 15
1055 -2:00 - FNT 2001 Sep 13
1056 -2:00 Brazil FN%sT 2002 Oct 1
1057 -2:00 - FNT
1058 # Other Atlantic islands have no permanent settlement.
1059 # These include Trindade and Martin Vaz (administratively part of ES),
1060 # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE).
1061 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
1062 # it also included the Penedos.
1063 #
1064 # Amapa (AP), east Para (PA)
1065 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu.
1066 # The division between east and west Para is the river Xingu.
1067 # In the north a very small part from the river Javary (now Jari I guess,
1068 # the border with Amapa) to the Amazon, then to the Xingu.
1069 Zone America/Belem -3:13:56 - LMT 1914
1070 -3:00 Brazil BR%sT 1988 Sep 12
1071 -3:00 - BRT
1072 #
1073 # west Para (PA)
1074 # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem.
1075 Zone America/Santarem -3:38:48 - LMT 1914
1076 -4:00 Brazil AM%sT 1988 Sep 12
1077 -4:00 - AMT 2008 Jun 24 00:00
1078 -3:00 - BRT
1079 #
1080 # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN),
1081 # Paraiba (PB)
1082 Zone America/Fortaleza -2:34:00 - LMT 1914
1083 -3:00 Brazil BR%sT 1990 Sep 17
1084 -3:00 - BRT 1999 Sep 30
1085 -3:00 Brazil BR%sT 2000 Oct 22
1086 -3:00 - BRT 2001 Sep 13
1087 -3:00 Brazil BR%sT 2002 Oct 1
1088 -3:00 - BRT
1089 #
1090 # Pernambuco (PE) (except Atlantic islands)
1091 Zone America/Recife -2:19:36 - LMT 1914
1092 -3:00 Brazil BR%sT 1990 Sep 17
1093 -3:00 - BRT 1999 Sep 30
1094 -3:00 Brazil BR%sT 2000 Oct 15
1095 -3:00 - BRT 2001 Sep 13
1096 -3:00 Brazil BR%sT 2002 Oct 1
1097 -3:00 - BRT
1098 #
1099 # Tocantins (TO)
1100 Zone America/Araguaina -3:12:48 - LMT 1914
1101 -3:00 Brazil BR%sT 1990 Sep 17
1108 # Alagoas (AL), Sergipe (SE)
1109 Zone America/Maceio -2:22:52 - LMT 1914
1110 -3:00 Brazil BR%sT 1990 Sep 17
1111 -3:00 - BRT 1995 Oct 13
1112 -3:00 Brazil BR%sT 1996 Sep 4
1113 -3:00 - BRT 1999 Sep 30
1114 -3:00 Brazil BR%sT 2000 Oct 22
1115 -3:00 - BRT 2001 Sep 13
1116 -3:00 Brazil BR%sT 2002 Oct 1
1117 -3:00 - BRT
1118 #
1119 # Bahia (BA)
1120 # There are too many Salvadors elsewhere, so use America/Bahia instead
1121 # of America/Salvador.
1122 Zone America/Bahia -2:34:04 - LMT 1914
1123 -3:00 Brazil BR%sT 2003 Sep 24
1124 -3:00 - BRT 2011 Oct 16
1125 -3:00 Brazil BR%sT 2012 Oct 21
1126 -3:00 - BRT
1127 #
1128 # Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
1129 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR),
1130 # Santa Catarina (SC), Rio Grande do Sul (RS)
1131 Zone America/Sao_Paulo -3:06:28 - LMT 1914
1132 -3:00 Brazil BR%sT 1963 Oct 23 00:00
1133 -3:00 1:00 BRST 1964
1134 -3:00 Brazil BR%sT
1135 #
1136 # Mato Grosso do Sul (MS)
1137 Zone America/Campo_Grande -3:38:28 - LMT 1914
1138 -4:00 Brazil AM%sT
1139 #
1140 # Mato Grosso (MT)
1141 Zone America/Cuiaba -3:44:20 - LMT 1914
1142 -4:00 Brazil AM%sT 2003 Sep 24
1143 -4:00 - AMT 2004 Oct 1
1144 -4:00 Brazil AM%sT
1145 #
1146 # Rondonia (RO)
1147 Zone America/Porto_Velho -4:15:36 - LMT 1914
1148 -4:00 Brazil AM%sT 1988 Sep 12
1149 -4:00 - AMT
1150 #
1151 # Roraima (RR)
1152 Zone America/Boa_Vista -4:02:40 - LMT 1914
1153 -4:00 Brazil AM%sT 1988 Sep 12
1154 -4:00 - AMT 1999 Sep 30
1155 -4:00 Brazil AM%sT 2000 Oct 15
1156 -4:00 - AMT
1157 #
1158 # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto
1159 # The great circle line from Tabatinga to Porto Acre divides
1160 # east from west Amazonas.
1161 Zone America/Manaus -4:00:04 - LMT 1914
1162 -4:00 Brazil AM%sT 1988 Sep 12
1163 -4:00 - AMT 1993 Sep 28
1164 -4:00 Brazil AM%sT 1994 Sep 22
1165 -4:00 - AMT
1166 #
1167 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1168 # Eirunepe, Envira, Ipixuna
1169 Zone America/Eirunepe -4:39:28 - LMT 1914
1170 -5:00 Brazil AC%sT 1988 Sep 12
1171 -5:00 - ACT 1993 Sep 28
1172 -5:00 Brazil AC%sT 1994 Sep 22
1173 -5:00 - ACT 2008 Jun 24 00:00
1174 -4:00 - AMT 2013 Nov 10
1175 -5:00 - ACT
1176 #
1177 # Acre (AC)
1178 Zone America/Rio_Branco -4:31:12 - LMT 1914
1179 -5:00 Brazil AC%sT 1988 Sep 12
1180 -5:00 - ACT 2008 Jun 24 00:00
1181 -4:00 - AMT 2013 Nov 10
1182 -5:00 - ACT
1183
1184 # Chile
1185
1186 # From Eduardo Krell (1995-10-19):
1187 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
1188 # of October.... The law is the same for March and October.
1189 # (1998-09-29):
1190 # Because of the drought this year, the government decided to go into
1191 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1192 # (unless there's another dry season next year, I guess).
1193
1194 # From Julio I. Pacheco Troncoso (1999-03-18):
1195 # Because of the same drought, the government decided to end DST later,
1196 # on April 3, (one-time change).
1197
1198 # From Oscar van Vlijmen (2006-10-08):
1199 # http://www.horaoficial.cl/cambio.htm
1200
1201 # From Jesper Norgaard Welen (2006-10-08):
1202 # I think that there are some obvious mistakes in the suggested link
1203 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
1204 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
1205 # (they should have been 1990-09-15 and 1990-09-16 respectively), but
1206 # anyhow it clears up some doubts too.
1207
1208 # From Paul Eggert (2006-12-27):
1209 # The following data for Chile and America/Santiago are from
1210 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
1211 # Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks
1212 # & Pottenger, except with DST transitions after 1932 cloned from
1213 # America/Santiago. The pre-1980 Pacific/Easter data are dubious,
1214 # but we have no other source.
1215
1216 # From German Poo-Caaman~o (2008-03-03):
1217 # Due to drought, Chile extends Daylight Time in three weeks. This
1218 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1219 # and Saturday 3/29 at 22:00 for Pacific/Easter)
1220 # The Supreme Decree is located at
1221 # <a href="http://www.shoa.cl/servicios/supremo316.pdf">
1222 # http://www.shoa.cl/servicios/supremo316.pdf
1223 # </a>
1224 # and the instructions for 2008 are located in:
1225 # <a href="http://www.horaoficial.cl/cambio.htm">
1226 # http://www.horaoficial.cl/cambio.htm
1227 # </a>.
1228
1229 # From Jose Miguel Garrido (2008-03-05):
1230 # ...
1231 # You could see the announces of the change on
1232 # <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm">
1233 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
1234 # </a>.
1235
1236 # From Angel Chiang (2010-03-04):
1237 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1238 # <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098">
1239 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1240 # </a>
1241 # (in Spanish, last paragraph).
1242 #
1243 # This is breaking news. There should be more information available later.
1244
1245 # From Arthur Daivd Olson (2010-03-06):
1246 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1247
1248 # From Glenn Eychaner (2011-03-02): [geychaner@mac.com]
1249 # It appears that the Chilean government has decided to postpone the
1250 # change from summer time to winter time again, by three weeks to April
1251 # 2nd:
1252 # <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651">
1253 # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651
1254 # </a>
1255 #
1256 # This is not yet reflected in the official "cambio de hora" site, but
1257 # probably will be soon:
1258 # <a href="http://www.horaoficial.cl/cambio.htm">
1259 # http://www.horaoficial.cl/cambio.htm
1260 # </a>
1261
1262 # From Arthur David Olson (2011-03-02):
1263 # The emol.com article mentions a water shortage as the cause of the
1264 # postponement, which may mean that it's not a permanent change.
1265
1266 # From Glenn Eychaner (2011-03-28):
1267 # The article:
1268 # <a href="http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}">
1269 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1270 # </a>
1271 #
1272 # In English:
1273 # Chile's clocks will go back an hour this year on the 7th of May instead
1274 # of this Saturday. They will go forward again the 3rd Saturday in
1275 # August, not in October as they have since 1968. This is a pilot plan
1276 # which will be reevaluated in 2012.
1277
1278 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1279 # As stated in the website of the Chilean Energy Ministry
1280 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1281 # The Chilean Government has decided to postpone the entrance into winter time
1282 # (to leave DST) from March 11 2012 to April 28th 2012. The decision has not
1283 # been yet formalized but it will within the next days.
1284 # Quote from the website communication:
1285 #
1286 # 6. For the year 2012, the dates of entry into winter time will be as follows:
1287 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1288 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1289 # of the same day.
1290 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1291 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1292 # 01:00 on September 2.
1293
1294 # From Steffen Thorsen (2013-02-15):
1295 # According to several news sources, Chile has extended DST this year,
1296 # they will end DST later and start DST earlier than planned. They
1297 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1298 # start date is 2013-09-08 00:00....
1299 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1300
1301 # From Jose Miguel Garrido (2014-02-19):
1302 # Today appeared in the Diario Oficial a decree amending the time change
1303 # dates to 2014.
1304 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1305 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1306 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1307
1308 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1309 # 'antarctica' file.
1310
1311 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1312 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1313 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1314 Rule Chile 1942 only - Jun 1 4:00u 0 -
1315 Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1316 Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1317 Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1318 Rule Chile 1947 only - Apr 1 4:00u 0 -
1319 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1320 Rule Chile 1969 only - Mar 30 3:00u 0 -
1321 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1347 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1348 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1349 Rule Chile 2012 max - Apr Sun>=23 3:00u 0 -
1350 Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S
1351 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1352 # (1996-09) says 1998-03-08. Ignore these.
1353 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1354 Zone America/Santiago -4:42:46 - LMT 1890
1355 -4:42:46 - SMT 1910 # Santiago Mean Time
1356 -5:00 - CLT 1916 Jul 1 # Chile Time
1357 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1358 -4:00 - CLT 1919 Jul 1 # Chile Time
1359 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1360 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1361 -4:00 Chile CL%sT
1362 Zone Pacific/Easter -7:17:44 - LMT 1890
1363 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1364 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time
1365 -6:00 Chile EAS%sT
1366 #
1367 # Sala y Gomez Island is like Pacific/Easter.
1368 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
1369 # San Felix, and Antarctic bases, are like America/Santiago.
1370
1371 # Colombia
1372
1373 # Milne gives 4:56:16.4 for Bogota time in 1899; round to nearest. He writes,
1374 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1375
1376 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1377 Rule CO 1992 only - May 3 0:00 1:00 S
1378 Rule CO 1993 only - Apr 4 0:00 0 -
1379 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1380 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1381 -4:56:16 - BMT 1914 Nov 23 # Bogota Mean Time
1382 -5:00 CO CO%sT # Colombia Time
1383 # Malpelo, Providencia, San Andres
1384 # no information; probably like America/Bogota
1385
1386 # Curacao
1387
1388 # Milne gives 4:35:46.9 for Curacao mean time; round to nearest.
1389 #
1390 # From Paul Eggert (2006-03-22):
1391 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1392 # -4:00 since standard time was introduced on 1912-03-02; and that
1393 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1394 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1395 # Saba Island has been like Curacao.
1396 # This all predates our 1970 cutoff, though.
1397 #
1398 # By July 2007 Curacao and St Maarten are planned to become
1399 # associated states within the Netherlands, much like Aruba;
1400 # Bonaire, Saba and St Eustatius would become directly part of the
1401 # Netherlands as Kingdom Islands. This won't affect their time zones
1402 # though, as far as we know.
1403 #
1404 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1405 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1406 -4:30 - ANT 1965 # Netherlands Antilles Time
1407 -4:00 - AST
1408
1409 # From Arthur David Olson (2011-06-15):
1410 # use links for places with new iso3166 codes.
1411 # The name "Lower Prince's Quarter" is both longer than fourteen charaters
1412 # and contains an apostrophe; use "Lower_Princes" below.
1413
1414 Link America/Curacao America/Lower_Princes # Sint Maarten
1415 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1416
1417 # Ecuador
1418 #
1419 # Milne says the Sentral and South American Telegraph Company used -5:24:15.
1420 #
1421 # From Paul Eggert (2007-03-04):
1422 # Apparently Ecuador had a failed experiment with DST in 1992.
1423 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
1424 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
1425 # talk about "hora Sixto". Leave this alone for now, as we have no data.
1426 #
1427 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1428 Zone America/Guayaquil -5:19:20 - LMT 1890
1429 -5:14:00 - QMT 1931 # Quito Mean Time
1430 -5:00 - ECT # Ecuador Time
1431 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1432 -5:00 - ECT 1986
1433 -6:00 - GALT # Galapagos Time
1434
1435 # Falklands
1436
1437 # From Paul Eggert (2006-03-22):
1438 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1439 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1440
1441 # From Falkland Islands Government Office, London (2001-01-22)
1442 # via Jesper Norgaard:
1443 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1444 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1445 # September. It is anticipated that the clocks will revert back at 2
1446 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1447 # Sunday 1 September.
1448
1449 # From Rives McDow (2001-02-13):
1450 #
1451 # I have communicated several times with people there, and the last
1452 # time I had communications that was helpful was in 1998. Here is
1453 # what was said then:
1454 #
1455 # "The general rule was that Stanley used daylight saving and the Camp
1456 # did not. However for various reasons many people in the Camp have
1457 # started to use daylight saving (known locally as 'Stanley Time')
1458 # There is no rule as to who uses daylight saving - it is a matter of
1459 # personal choice and so it is impossible to draw a map showing who
1460 # uses it and who does not. Any list would be out of date as soon as
1461 # it was produced. This year daylight saving ended on April 18/19th
1462 # and started again on September 12/13th. I do not know what the rule
1471 # Falklands do not use DST. I have found in my communications there
1472 # that these areas are on the western half of East Falkland and all of
1473 # West Falkland. Stanley is the only place that consistently observes
1474 # DST. Again, as in other places in the world, the farmers don't like
1475 # it. West Falkland is almost entirely sheep farmers.
1476 #
1477 # I know one lady there that keeps a list of which farm keeps DST and
1478 # which doesn't each year. She runs a shop in Stanley, and says that
1479 # the list changes each year. She uses it to communicate to her
1480 # customers, catching them when they are home for lunch or dinner.
1481
1482 # From Paul Eggert (2001-03-05):
1483 # For now, we'll just record the time in Stanley, since we have no
1484 # better info.
1485
1486 # From Steffen Thorsen (2011-04-01):
1487 # The Falkland Islands will not turn back clocks this winter, but stay on
1488 # daylight saving time.
1489 #
1490 # One source:
1491 # <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3">
1492 # http://www.falklandnews.com/public/story.cfm?get=5914&source=3
1493 # </a>
1494 #
1495 # We have gotten this confirmed by a clerk of the legislative assembly:
1496 # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the
1497 # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3
1498 # hours) on the first Sunday of September at 0200hrs.
1499 #
1500 # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands
1501 # will not revert to local mean time, but clocks will remain on Summer
1502 # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term
1503 # change to local time following the trial period will be notified.
1504 #
1505 # From Andrew Newman (2012-02-24)
1506 # A letter from Justin McPhee, Chief Executive,
1507 # Cable & Wireless Falkland Islands (dated 2012-02-22)
1508 # states...
1509 # The current Atlantic/Stanley entry under South America expects the
1510 # clocks to go back to standard Falklands Time (FKT) on the 15th April.
1511 # The database entry states that in 2011 Stanley was staying on fixed
1512 # summer time on a trial basis only. FIG need to contact IANA and/or
1513 # the maintainers of the database to inform them we're adopting
1538 -3:00 - FKST
1539
1540 # French Guiana
1541 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1542 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1543 -4:00 - GFT 1967 Oct # French Guiana Time
1544 -3:00 - GFT
1545
1546 # Guyana
1547 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1548 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1549 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1550 -3:45 - GYT 1975 Jul 31 # Guyana Time
1551 -3:00 - GYT 1991
1552 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1553 -4:00 - GYT
1554
1555 # Paraguay
1556 #
1557 # From Paul Eggert (2006-03-22):
1558 # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00,
1559 # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999
1560 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1561 #
1562 # From Waldemar Villamayor-Venialbo (2013-09-20):
1563 # No time of the day is established for the adjustment, so people normally
1564 # adjust their clocks at 0 hour of the given dates.
1565 #
1566 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1567 Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1568 Rule Para 1975 1978 - Mar 1 0:00 0 -
1569 Rule Para 1979 1991 - Apr 1 0:00 0 -
1570 Rule Para 1989 only - Oct 22 0:00 1:00 S
1571 Rule Para 1990 only - Oct 1 0:00 1:00 S
1572 Rule Para 1991 only - Oct 6 0:00 1:00 S
1573 Rule Para 1992 only - Mar 1 0:00 0 -
1574 Rule Para 1992 only - Oct 5 0:00 1:00 S
1575 Rule Para 1993 only - Mar 31 0:00 0 -
1576 Rule Para 1993 1995 - Oct 1 0:00 1:00 S
1577 Rule Para 1994 1995 - Feb lastSun 0:00 0 -
1578 Rule Para 1996 only - Mar 1 0:00 0 -
1579 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
1580 # From Steffen Thorsen (2000-10-02):
1581 # I have three independent reports that Paraguay changed to DST this Sunday
1582 # (10-01).
1583 #
1584 # Translated by Gwillim Law (2001-02-27) from
1585 # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm">
1586 # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01)
1587 # </a>:
1588 # Starting at 0:00 today, the clock will be set forward 60 minutes, in
1589 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change
1590 # system has been operating for several years. Formerly there was a separate
1591 # decree each year; the new law has the same effect, but permanently. Every
1592 # year, the time will change on the first Sunday of October; likewise, the
1593 # clock will be set back on the first Sunday of March.
1594 #
1595 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
1596 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1597 Rule Para 1997 only - Feb lastSun 0:00 0 -
1598 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1599 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1600 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
1601 # From Rives McDow (2002-02-28):
1602 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the
1603 # dst method to be from the first Sunday in September to the first Sunday in
1604 # April.
1605 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
1606 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
1607 #
1608 # From Jesper Norgaard Welen (2005-01-02):
1609 # There are several sources that claim that Paraguay made
1610 # a timezone rule change in autumn 2004.
1611 # From Steffen Thorsen (2005-01-05):
1612 # Decree 1,867 (2004-03-05)
1613 # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13)
1614 # <http://www.presidencia.gov.py/decretos/D1867.pdf>
1615 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
1616 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
1617 # From Carlos Raul Perasso (2010-02-18):
1618 # By decree number 3958 issued yesterday (
1619 # <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf">
1620 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1621 # </a>
1622 # )
1623 # Paraguay changes its DST schedule, postponing the March rule to April and
1624 # modifying the October date. The decree reads:
1625 # ...
1626 # Art. 1. It is hereby established that from the second Sunday of the month of
1627 # April of this year (2010), the official time is to be set back 60 minutes,
1628 # and that on the first Sunday of the month of October, it is to be set
1629 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1630 # ...
1631 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
1632 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1633 #
1634 # From Steffen Thorsen (2013-03-07):
1635 # Paraguay will end DST on 2013-03-24 00:00....
1636 # http://www.ande.gov.py/interna.php?id=1075
1637 #
1638 # From Carlos Raul Perasso (2013-03-15):
1639 # The change in Paraguay is now final. Decree number 10780
1640 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1641 # From Carlos Raul Perasso (2014-02-28):
1642 # Decree 1264 can be found at:
1643 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1644 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1645
1646 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1647 Zone America/Asuncion -3:50:40 - LMT 1890
1648 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time
1649 -4:00 - PYT 1972 Oct # Paraguay Time
1650 -3:00 - PYT 1974 Apr
1651 -4:00 Para PY%sT
1652
1653 # Peru
1654 #
1655 # <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net">
1656 # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a>
1657 # When we were in Peru in 1985-1986, they apparently switched over
1658 # sometime between December 29 and January 3 while we were on the Amazon.
1659 #
1660 # From Paul Eggert (2006-03-22):
1661 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1662
1663 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1664 Rule Peru 1938 only - Jan 1 0:00 1:00 S
1665 Rule Peru 1938 only - Apr 1 0:00 0 -
1666 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
1667 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1668 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
1669 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1670 Rule Peru 1990 only - Jan 1 0:00 1:00 S
1671 Rule Peru 1990 only - Apr 1 0:00 0 -
1672 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1673 Rule Peru 1994 only - Jan 1 0:00 1:00 S
1674 Rule Peru 1994 only - Apr 1 0:00 0 -
1675 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1676 Zone America/Lima -5:08:12 - LMT 1890
1689 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1690 Zone America/Paramaribo -3:40:40 - LMT 1911
1691 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1692 -3:40:36 - PMT 1945 Oct # The capital moved?
1693 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1694 -3:30 - SRT 1984 Oct # Suriname Time
1695 -3:00 - SRT
1696
1697 # Trinidad and Tobago
1698 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1699 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1700 -4:00 - AST
1701
1702 # These all agree with Trinidad and Tobago since 1970.
1703 Link America/Port_of_Spain America/Anguilla
1704 Link America/Port_of_Spain America/Dominica
1705 Link America/Port_of_Spain America/Grenada
1706 Link America/Port_of_Spain America/Guadeloupe
1707 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1708 Link America/Port_of_Spain America/Montserrat
1709 Link America/Port_of_Spain America/St_Barthelemy
1710 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1711 Link America/Port_of_Spain America/St_Lucia
1712 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1713 Link America/Port_of_Spain America/St_Vincent
1714 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1715
1716 # Uruguay
1717 # From Paul Eggert (1993-11-18):
1718 # Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1719 # From Shanks & Pottenger:
1720 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1721 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1722 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1723 Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1724 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
1725 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
1726 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1727 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
1728 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
1729 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
1762 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA.
1763 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
1764 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
1765 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
1766 Rule Uruguay 1993 only - Feb 28 0:00 0 -
1767 # From Eduardo Cota (2004-09-20):
1768 # The uruguayan government has decreed a change in the local time....
1769 # http://www.presidencia.gub.uy/decretos/2004091502.htm
1770 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
1771 # From Steffen Thorsen (2005-03-11):
1772 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1773 # save energy ... it was postponed two weeks....
1774 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1775 Rule Uruguay 2005 only - Mar 27 2:00 0 -
1776 # From Eduardo Cota (2005-09-27):
1777 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1778 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1779 # 02:00 local time, official time in Uruguay will be at GMT -2.
1780 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1781 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1782 # From Jesper Norgaard Welen (2006-09-06):
1783 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1784 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S
1785 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 -
1786 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1787 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1788 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1789 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1790 -3:00 Uruguay UY%sT
1791
1792 # Venezuela
1793 #
1794 # From John Stainforth (2007-11-28):
1795 # ... the change for Venezuela originally expected for 2007-12-31 has
1796 # been brought forward to 2007-12-09. The official announcement was
1797 # published today in the "Gaceta Oficial de la Republica Bolivariana
1798 # de Venezuela, numero 38.819" (official document for all laws or
1799 # resolution publication)
1800 # http://www.globovision.com/news.php?nid=72208
1801
1802 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1803 Zone America/Caracas -4:27:44 - LMT 1890
1804 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1805 -4:30 - VET 1965 # Venezuela Time
1806 -4:00 - VET 2007 Dec 9 03:00
1807 -4:30 - VET
|
4 # This code is free software; you can redistribute it and/or modify it
5 # under the terms of the GNU General Public License version 2 only, as
6 # published by the Free Software Foundation. Oracle designates this
7 # particular file as subject to the "Classpath" exception as provided
8 # by Oracle in the LICENSE file that accompanied this code.
9 #
10 # This code is distributed in the hope that it will be useful, but WITHOUT
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 # version 2 for more details (a copy is included in the LICENSE file that
14 # accompanied this code).
15 #
16 # You should have received a copy of the GNU General Public License version
17 # 2 along with this work; if not, write to the Free Software Foundation,
18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 #
20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 # or visit www.oracle.com if you need additional information or have any
22 # questions.
23 #
24 # This file is in the public domain, so clarified as of
25 # 2009-05-17 by Arthur David Olson.
26
27 # This data is by no means authoritative; if you think you know better,
28 # go ahead and edit the file (and please send any changes to
29 # tz@iana.org for general use in the future).
30
31 # From Paul Eggert (2006-03-22):
32 # A good source for time zone historical data outside the U.S. is
33 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
34 # San Diego: ACS Publications, Inc. (2003).
35 #
36 # For data circa 1899, a common source is:
37 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
38 # <http://www.jstor.org/stable/1774359>.
39 #
40 # Gwillim Law writes that a good source
41 # for recent time zone data is the International Air Transport
42 # Association's Standard Schedules Information Manual (IATA SSIM),
43 # published semiannually. Law sent in several helpful summaries
44 # of the IATA's data after 1990.
45 #
46 # Except where otherwise noted, Shanks & Pottenger is the source for
47 # entries through 1990, and IATA SSIM is the source for entries afterwards.
48 #
49 # Earlier editions of these tables used the North American style (e.g. ARST and
50 # ARDT for Argentine Standard and Daylight Time), but the following quote
51 # suggests that it's better to use European style (e.g. ART and ARST).
52 # I suggest the use of _Summer time_ instead of the more cumbersome
53 # _daylight-saving time_. _Summer time_ seems to be in general use
54 # in Europe and South America.
55 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
56 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
57 #
58 # Earlier editions of these tables also used the North American style
59 # for time zones in Brazil, but this was incorrect, as Brazilians say
60 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
61 # the railroad sector, writes (1999-07-06):
62 # The subject of time zones is currently a matter of discussion/debate in
63 # Brazil. Let's say that "the Brasília time" is considered the
64 # "official time" because Brasília is the capital city.
65 # The other three time zones are called "Brasília time "minus one" or
66 # "plus one" or "plus two". As far as I know there is no such
67 # name/designation as "Eastern Time" or "Central Time".
68 # So I invented the following (English-language) abbreviations for now.
69 # Corrections are welcome!
70 # std dst
71 # -2:00 FNT FNST Fernando de Noronha
72 # -3:00 BRT BRST Brasília
73 # -4:00 AMT AMST Amazon
74 # -5:00 ACT ACST Acre
75
76 ###############################################################################
77
78 ###############################################################################
79
80 # Argentina
81
82 # From Bob Devine (1988-01-28):
83 # Argentina: first Sunday in October to first Sunday in April since 1976.
84 # Double Summer time from 1969 to 1974. Switches at midnight.
85
86 # From U. S. Naval Observatory (1988-01-19):
87 # ARGENTINA 3 H BEHIND UTC
88
89 # From Hernan G. Otero (1995-06-26):
90 # I am sending modifications to the Argentine time zone table...
91 # AR was chosen because they are the ISO letters that represent Argentina.
92
93 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
94 Rule Arg 1930 only - Dec 1 0:00 1:00 S
95 Rule Arg 1931 only - Apr 1 0:00 0 -
96 Rule Arg 1931 only - Oct 15 0:00 1:00 S
97 Rule Arg 1932 1940 - Mar 1 0:00 0 -
98 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S
99 Rule Arg 1940 only - Jul 1 0:00 1:00 S
100 Rule Arg 1941 only - Jun 15 0:00 0 -
101 Rule Arg 1941 only - Oct 15 0:00 1:00 S
102 Rule Arg 1943 only - Aug 1 0:00 0 -
103 Rule Arg 1943 only - Oct 15 0:00 1:00 S
104 Rule Arg 1946 only - Mar 1 0:00 0 -
105 Rule Arg 1946 only - Oct 1 0:00 1:00 S
106 Rule Arg 1963 only - Oct 1 0:00 0 -
107 Rule Arg 1963 only - Dec 15 0:00 1:00 S
108 Rule Arg 1964 1966 - Mar 1 0:00 0 -
109 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S
110 Rule Arg 1967 only - Apr 2 0:00 0 -
111 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S
112 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 -
113 Rule Arg 1974 only - Jan 23 0:00 1:00 S
114 Rule Arg 1974 only - May 1 0:00 0 -
115 Rule Arg 1988 only - Dec 1 0:00 1:00 S
116 #
117 # From Hernan G. Otero (1995-06-26):
118 # These corrections were contributed by InterSoft Argentina S.A.,
119 # obtaining the data from the:
120 # Talleres de Hidrografía Naval Argentina
121 # (Argentine Naval Hydrography Institute)
122 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 -
123 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
124 #
125 # From Hernan G. Otero (1995-06-26):
126 # From this moment on, the law that mandated the daylight saving
127 # time corrections was derogated and no more modifications
128 # to the time zones (for daylight saving) are now made.
129 #
130 # From Rives McDow (2000-01-10):
131 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
132 # which did not result in the switch of a time zone, as they stayed 9 hours
133 # from the International Date Line.
134 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
135 # From Paul Eggert (2007-12-28):
136 # DST was set to expire on March 5, not March 3, but since it was converted
137 # to standard time on March 3 it's more convenient for us to pretend that
138 # it ended on March 3.
139 Rule Arg 2000 only - Mar 3 0:00 0 -
140 #
141 # From Peter Gradelski via Steffen Thorsen (2000-03-01):
142 # We just checked with our São Paulo office and they say the government of
143 # Argentina decided not to become one of the countries that go on or off DST.
144 # So Buenos Aires should be -3 hours from GMT at all times.
145 #
146 # From Fabián L. Arce Jofré (2000-04-04):
147 # The law that claimed DST for Argentina was derogated by President Fernando
148 # de la Rúa on March 2, 2000, because it would make people spend more energy
149 # in the winter time, rather than less. The change took effect on March 3.
150 #
151 # From Mariano Absatz (2001-06-06):
152 # one of the major newspapers here in Argentina said that the 1999
153 # Timezone Law (which never was effectively applied) will (would?) be
154 # in effect.... The article is at
155 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm
156 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted
157 # 1999-09-17, and published 1999-09-21. The official publication is at:
158 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
159 # Regretfully, you have to subscribe (and pay) for the on-line version....
160 #
161 # (2001-06-12):
162 # the timezone for Argentina will not change next Sunday.
163 # Apparently it will do so on Sunday 24th....
164 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm
165 #
166 # (2001-06-25):
167 # Last Friday (yes, the last working day before the date of the change), the
168 # Senate annulled the 1999 law that introduced the changes later postponed.
169 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
170 # It remains the vote of the Deputies..., but it will be the same....
171 # This kind of things had always been done this way in Argentina.
172 # We are still -03:00 all year round in all of the country.
173 #
174 # From Steffen Thorsen (2007-12-21):
175 # A user (Leonardo Chaim) reported that Argentina will adopt DST....
176 # all of the country (all Zone-entries) are affected. News reports like
177 # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate
178 # that Argentina will use DST next year as well, from October to
179 # March, although exact rules are not given.
180 #
181 # From Jesper Nørgaard Welen (2007-12-26)
182 # The last hurdle of Argentina DST is over, the proposal was approved in
183 # the lower chamber too (Diputados) with a vote 192 for and 2 against.
184 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
185 # the original scanned proposal, where the dates and the zero hours are
186 # clear and unambiguous...This is the article about final approval:
187 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
188 #
189 # From Paul Eggert (2007-12-22):
190 # For dates after mid-2008, the following rules are my guesses and
191 # are quite possibly wrong, but are more likely than no DST at all.
192
193 # From Alexander Krivenyshev (2008-09-05):
194 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
195 # Argentina will start DST on Sunday October 19, 2008.
196 #
197 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
198 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
199
200 # From Rodrigo Severo (2008-10-06):
201 # Here is some info available at a Gentoo bug related to TZ on Argentina's DST:
202 # ...
203 # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 -------
204 # Hi, there is a problem with timezone-data-2008e and maybe with
205 # timezone-data-2008f
206 # Argentinian law [Number] 25.155 is no longer valid.
207 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
208 # The new one is law [Number] 26.350
209 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
210 # So there is no summer time in Argentina for now.
211
212 # From Mariano Absatz (2008-10-20):
213 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina
214 # From 2008-10-19 until 2009-03-15
215 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
216 #
217
218 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer
219 # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La
220 # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego
221 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
222 #
223 # Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying
224 # it will not apply DST either (even when it was not included in Decree 1705/2008)
225 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
226
227 # From fullinet (2009-10-18):
228 # As announced in
229 # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356
230 # (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change")
231 #
232 # "Por el momento, el Gobierno Nacional resolvió no modificar la hora
233 # oficial, decisión que estaba en estudio para su implementación el
234 # domingo 18 de octubre. Desde el Ministerio de Planificación se anunció
235 # que la Argentina hoy, en estas condiciones meteorológicas, no necesita
236 # la modificación del huso horario, ya que 2009 nos encuentra con
237 # crecimiento en la producción y distribución energética."
238
239 Rule Arg 2007 only - Dec 30 0:00 1:00 S
240 Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 -
241 Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
242
243 # From Mariano Absatz (2004-05-21):
244 # Today it was officially published that the Province of Mendoza is changing
245 # its timezone this winter... starting tomorrow night....
246 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf
247 # From Paul Eggert (2004-05-24):
248 # It's Law No. 7,210. This change is due to a public power emergency, so for
249 # now we'll assume it's for this year only.
250 #
251 # From Paul Eggert (2006-03-22):
252 # Hora de verano para la Republica Argentina (2003-06-08)
253 # <http://www.spicasc.net/horvera.html>
254 # says that standard time in Argentina from 1894-10-31
255 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value
256 # over Shanks & Pottenger.
257 #
258 # From Mariano Absatz (2004-06-05):
259 # These media articles from a major newspaper mostly cover the current state:
260 # http://www.lanacion.com.ar/04/05/27/de_604825.asp
261 # http://www.lanacion.com.ar/04/05/28/de_605203.asp
262 #
263 # The following eight (8) provinces pulled clocks back to UTC-04:00 at
264 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01).
265 # Apparently, all nine provinces would go back to UTC-03:00 at the same
266 # time in October 17th.
267 #
268 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,
269 # Tierra del Fuego, Tucumán.
270 #
271 # From Mariano Absatz (2004-06-14):
272 # ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00
273 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's
274 # annoyance with the change is much higher than the power savings obtained....
275 #
276 # From Gwillim Law (2004-06-14):
277 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ...
278 # "The time change in Tierra del Fuego was a conflicted decision from
279 # the start. The government had decreed that the measure would take
280 # effect on June 1, but a normative error forced the new time to begin
281 # three days earlier, from a Saturday to a Sunday....
282 # Our understanding was that the change was originally scheduled to take place
283 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other
284 # provinces). Sunday was May 30, only two days earlier. So the article
285 # contains a contradiction. I would give more credence to the Saturday/Sunday
286 # date than the "three days earlier" phrase, and conclude that Tierra del
287 # Fuego set its clocks back at 2004-05-30 00:00.
288 #
289 # From Steffen Thorsen (2004-10-05):
290 # The previous law 7210 which changed the province of Mendoza's time zone
291 # back in May have been modified slightly in a new law 7277, which set the
292 # new end date to 2004-09-26 (original date was 2004-10-17).
293 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf
294 #
295 # From Mariano Absatz (2004-10-05):
296 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
297 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
298 # at midnight between Saturday, July 24th and Sunday, July 25th....
299 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html
300 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html
301 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html
302
303 # From Alex Krivenyshev (2008-01-17):
304 # Here are articles that Argentina Province San Luis is planning to end DST
305 # as earlier as upcoming Monday January 21, 2008 or February 2008:
306 #
307 # Provincia argentina retrasa reloj y marca diferencia con resto del país
308 # (Argentine Province delayed clock and mark difference with the rest of the
309 # country)
310 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
311 #
312 # Es inminente que en San Luis atrasen una hora los relojes
313 # (It is imminent in San Luis clocks one hour delay)
314 # http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
315 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
316
317 # From Jesper Nørgaard Welen (2008-01-18):
318 # The page of the San Luis provincial government
319 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
320 # confirms what Alex Krivenyshev has earlier sent to the tz
321 # emailing list about that San Luis plans to return to standard
322 # time much earlier than the rest of the country. It also
323 # confirms that upon request the provinces San Juan and Mendoza
324 # refused to follow San Luis in this change.
325 #
326 # The change is supposed to take place Monday the 21.st at 0:00
327 # hours. As far as I understand it if this goes ahead, we need
328 # a new timezone for San Luis (although there are also documented
329 # independent changes in the southamerica file of San Luis in
330 # 1990 and 1991 which has not been confirmed).
331
332 # From Jesper Nørgaard Welen (2008-01-25):
333 # Unfortunately the below page has become defunct, about the San Luis
334 # time change. Perhaps because it now is part of a group of pages "Most
335 # important pages of 2008."
336 #
337 # You can use
338 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834
339 # instead it seems. Or use "Buscador" from the main page of the San Luis
340 # government, and fill in "huso" and click OK, and you will get 3 pages
341 # from which the first one is identical to the above.
342
343 # From Mariano Absatz (2008-01-28):
344 # I can confirm that the Province of San Luis (and so far only that
345 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008
346 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back
347 # 1 hour), and they intend to keep UTC-3 as their timezone all year round
348 # (that is, unless they change their mind any minute now).
349 #
350 # So we'll have to add yet another city to 'southamerica' (I think San
351 # Luis city is the mos populated city in the Province, so it'd be
352 # America/Argentina/San_Luis... of course I can't remember if San Luis's
353 # history of particular changes goes along with Mendoza or San Juan :-(
354 # (I only remember not being able to collect hard facts about San Luis
355 # back in 2004, when these provinces changed to UTC-4 for a few days, I
356 # mailed them personally and never got an answer).
357
358 # From Paul Eggert (2008-06-30):
359 # Unless otherwise specified, data are from Shanks & Pottenger through 1992,
360 # from the IATA otherwise. As noted below, Shanks & Pottenger say that
361 # America/Cordoba split into 6 subregions during 1991/1992, one of which
362 # was America/San_Luis, but we haven't verified this yet so for now we'll
363 # keep America/Cordoba a single region rather than splitting it into the
364 # other 5 subregions.
365
366 # From Mariano Absatz (2009-03-13):
367 # Yesterday (with our usual 2-day notice) the Province of San Luis
368 # decided that next Sunday instead of "staying" @utc-03:00 they will go
369 # to utc-04:00 until the second Saturday in October...
370 #
371 # The press release is at
372 # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102
373 # (I couldn't find the decree, but www.sanluis.gov.ar
374 # is the official page for the Province Government.)
375 #
376 # There's also a note in only one of the major national papers ...
377 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912
378 #
379 # The press release says [quick and dirty translation]:
380 # ... announced that next Sunday, at 00:00, Puntanos (the San Luis
381 # inhabitants) will have to turn back one hour their clocks
382 #
383 # Since then, San Luis will establish its own Province timezone. Thus,
384 # during 2009, this timezone change will run from 00:00 the third Sunday
385 # in March until 24:00 of the second Saturday in October.
386
387 # From Mariano Absatz (2009-10-16):
388 # ...the Province of San Luis is a case in itself.
389 #
390 # The Law at
391 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
392 # is ambiguous because establishes a calendar from the 2nd Sunday in
393 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the
394 # complement of that starting on the 2nd Sunday of March at 0:00 and
395 # ending on the 2nd Saturday of March at 24:00.
396 #
397 # This clearly breaks every time the 1st of March or October is a Sunday.
398 #
399 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
400 # Sunday of October and March.
401 #
402 # The problem is that the changes in the rest of the Provinces that did
403 # change in 2007/2008, were made according to the Federal Law and Decrees
404 # that did so on the 3rd Sunday of October and March.
405 #
406 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
407 # (October 11th) at 0:00.
408 #
409 # So I guess a new set of rules, besides "Arg", must be made and the last
410 # America/Argentina/San_Luis entries should change to use these...
411 #
412 # I'm enclosing a patch that does what I say... regretfully, the San Luis
413 # timezone must be called "WART/WARST" even when most of the time (like,
414 # right now) WARST == ART... that is, since last Sunday, all the country
415 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
416 # of the country calls it "ART".
417 # ...
418
419 # From Alexander Krivenyshev (2010-04-09):
420 # According to news reports from El Diario de la Republica Province San
421 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
422 # after April 11, 2010 - will continue to have same time as rest of
423 # Argentina (UTC-3) (no DST).
424 #
425 # Confirmaron la prórroga del huso horario de verano (Spanish)
426 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
427 # or (some English translation):
428 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
429
430 # From Mariano Absatz (2010-04-12):
431 # yes...I can confirm this...and given that San Luis keeps calling
432 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
433 # rules...San Luis is still using "Western ARgentina Time" and it got
434 # stuck on Summer daylight savings time even though the summer is over.
435
436 # From Paul Eggert (2013-09-05):
437 # Perhaps San Luis operates on the legal fiction that it is at UTC-4
438 # with perpetual summer time, but ordinary usage typically seems to
439 # just say it's at UTC-3; see, for example,
440 # <http://es.wikipedia.org/wiki/Hora_oficial_argentina>.
441 # We've documented similar situations as being plain changes to
442 # standard time, so let's do that here too. This does not change UTC
443 # offsets, only tm_isdst and the time zone abbreviations. One minor
444 # plus is that this silences a zic complaint that there's no POSIX TZ
445 # setting for time stamps past 2038.
446
447 # From Paul Eggert (2013-02-21):
448 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
449
450 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
451 #
452 # Buenos Aires (BA), Capital Federal (CF),
453 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
454 -4:16:48 - CMT 1920 May # Córdoba Mean Time
455 -4:00 - ART 1930 Dec
456 -4:00 Arg AR%sT 1969 Oct 5
457 -3:00 Arg AR%sT 1999 Oct 3
458 -4:00 Arg AR%sT 2000 Mar 3
459 -3:00 Arg AR%sT
460 #
461 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
462 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
463 #
464 # Shanks & Pottenger also make the following claims, which we haven't verified:
465 # - Formosa switched to -3:00 on 1991-01-07.
466 # - Misiones switched to -3:00 on 1990-12-29.
467 # - Chaco switched to -3:00 on 1991-01-04.
468 # - Santiago del Estero switched to -4:00 on 1991-04-01,
469 # then to -3:00 on 1991-04-26.
470 #
471 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
472 -4:16:48 - CMT 1920 May
473 -4:00 - ART 1930 Dec
474 -4:00 Arg AR%sT 1969 Oct 5
475 -3:00 Arg AR%sT 1991 Mar 3
476 -4:00 - WART 1991 Oct 20
477 -3:00 Arg AR%sT 1999 Oct 3
478 -4:00 Arg AR%sT 2000 Mar 3
479 -3:00 Arg AR%sT
480 #
481 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
482 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
483 -4:16:48 - CMT 1920 May
484 -4:00 - ART 1930 Dec
485 -4:00 Arg AR%sT 1969 Oct 5
486 -3:00 Arg AR%sT 1991 Mar 3
487 -4:00 - WART 1991 Oct 20
488 -3:00 Arg AR%sT 1999 Oct 3
489 -4:00 Arg AR%sT 2000 Mar 3
490 -3:00 Arg AR%sT 2008 Oct 18
491 -3:00 - ART
492 #
493 # Tucumán (TM)
494 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31
495 -4:16:48 - CMT 1920 May
496 -4:00 - ART 1930 Dec
497 -4:00 Arg AR%sT 1969 Oct 5
498 -3:00 Arg AR%sT 1991 Mar 3
499 -4:00 - WART 1991 Oct 20
500 -3:00 Arg AR%sT 1999 Oct 3
501 -4:00 Arg AR%sT 2000 Mar 3
502 -3:00 - ART 2004 Jun 1
503 -4:00 - WART 2004 Jun 13
504 -3:00 Arg AR%sT
505 #
506 # La Rioja (LR)
507 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
508 -4:16:48 - CMT 1920 May
509 -4:00 - ART 1930 Dec
510 -4:00 Arg AR%sT 1969 Oct 5
511 -3:00 Arg AR%sT 1991 Mar 1
512 -4:00 - WART 1991 May 7
513 -3:00 Arg AR%sT 1999 Oct 3
585
586 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
587 -4:16:48 - CMT 1920 May
588 -4:00 - ART 1930 Dec
589 -4:00 Arg AR%sT 1969 Oct 5
590 -3:00 Arg AR%sT 1990
591 -3:00 1:00 ARST 1990 Mar 14
592 -4:00 - WART 1990 Oct 15
593 -4:00 1:00 WARST 1991 Mar 1
594 -4:00 - WART 1991 Jun 1
595 -3:00 - ART 1999 Oct 3
596 -4:00 1:00 WARST 2000 Mar 3
597 -3:00 - ART 2004 May 31
598 -4:00 - WART 2004 Jul 25
599 -3:00 Arg AR%sT 2008 Jan 21
600 -4:00 SanLuis WAR%sT 2009 Oct 11
601 -3:00 - ART
602 #
603 # Santa Cruz (SC)
604 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
605 -4:16:48 - CMT 1920 May # Córdoba Mean Time
606 -4:00 - ART 1930 Dec
607 -4:00 Arg AR%sT 1969 Oct 5
608 -3:00 Arg AR%sT 1999 Oct 3
609 -4:00 Arg AR%sT 2000 Mar 3
610 -3:00 - ART 2004 Jun 1
611 -4:00 - WART 2004 Jun 20
612 -3:00 Arg AR%sT 2008 Oct 18
613 -3:00 - ART
614 #
615 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
616 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
617 -4:16:48 - CMT 1920 May # Córdoba Mean Time
618 -4:00 - ART 1930 Dec
619 -4:00 Arg AR%sT 1969 Oct 5
620 -3:00 Arg AR%sT 1999 Oct 3
621 -4:00 Arg AR%sT 2000 Mar 3
622 -3:00 - ART 2004 May 30
623 -4:00 - WART 2004 Jun 20
624 -3:00 Arg AR%sT 2008 Oct 18
625 -3:00 - ART
626
627 # Aruba
628 Link America/Curacao America/Aruba
629
630 # Bolivia
631 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
632 Zone America/La_Paz -4:32:36 - LMT 1890
633 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
634 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
635 -4:00 - BOT # Bolivia Time
636
637 # Brazil
638
639 # From Paul Eggert (1993-11-18):
640 # The mayor of Rio recently attempted to change the time zone rules
641 # just in his city, in order to leave more summer time for the tourist trade.
642 # The rule change lasted only part of the day;
643 # the federal government refused to follow the city's rules, and business
644 # was in a chaos, so the mayor backed down that afternoon.
645
646 # From IATA SSIM (1996-02):
647 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
648 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
649 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
650 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
651 # [The last three states are new to this issue of the IATA SSIM.]
652
653 # From Gwillim Law (1996-10-07):
654 # Geography, history (Tocantins was part of Goiás until 1989), and other
655 # sources of time zone information lead me to believe that AL, SE, and TO were
656 # always in BR1, and so the only change was whether or not they observed DST....
657 # The earliest issue of the SSIM I have is 2/91. Each issue from then until
658 # 9/95 says that DST is observed only in the ten states I quoted from 9/95,
659 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
660 # (UTC-4).... The other two time zones given for Brazil are BR3, which is
661 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
662 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
663 # become part of the state of Pernambuco). The boundary between BR1 and BR2
664 # has never been clearly stated. They've simply been called East and West.
665 # However, some conclusions can be drawn from another IATA manual: the Airline
666 # Coding Directory, which lists close to 400 airports in Brazil. For each
667 # airport it gives a time zone which is coded to the SSIM. From that
668 # information, I'm led to conclude that the states of Amapá (AP), Ceará (CE),
669 # Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do
670 # Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST.
671
672 # From Marcos Tadeu (1998-09-27):
673 # Brazilian official page <http://pcdsh01.on.br/verao1.html>
674
675 # From Jesper Nørgaard (2000-11-03):
676 # [For an official list of which regions in Brazil use which time zones, see:]
677 # http://pcdsh01.on.br/Fusbr.htm
678 # http://pcdsh01.on.br/Fusbrhv.htm
679
680 # From Celso Doria via David Madeo (2002-10-09):
681 # The reason for the delay this year has to do with elections in Brazil.
682 #
683 # Unlike in the United States, elections in Brazil are 100% computerized and
684 # the results are known almost immediately. Yesterday, it was the first
685 # round of the elections when 115 million Brazilians voted for President,
686 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is
687 # counting (or re-counting) votes anymore and we know there will be a second
688 # round for the Presidency and also for some Governors. The 2nd round will
689 # take place on October 27th.
690 #
691 # The reason why the DST will only begin November 3rd is that the thousands
692 # of electoral machines used cannot have their time changed, and since the
693 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,
694 # the Government decided to postpone DST, instead of changing the Constitution
695 # (maybe, for the next elections, it will be possible to change the clock)...
696
697 # From Rodrigo Severo (2004-10-04):
698 # It's just the biannual change made necessary by the much hyped, supposedly
699 # modern Brazilian eletronic voting machines which, apparently, can't deal
700 # with a time change between the first and the second rounds of the elections.
701
702 # From Steffen Thorsen (2007-09-20):
703 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:
704 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975
705
706 # From Paul Schulze (2008-06-24):
707 # ...by law number 11.662 of April 24, 2008 (published in the "Diario
708 # Oficial da União"...) in Brazil there are changes in the timezones,
709 # effective today (00:00am at June 24, 2008) as follows:
710 #
711 # a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the
712 # part of the Amazonas state that had this timezone now being put to the
713 # timezone UTC+4
714 # b) The whole Pará state now is put at timezone UTC+3, instead of just
715 # part of it, as was before.
716 #
717 # This change follows a proposal of senator Tiao Viana of Acre state, that
718 # proposed it due to concerns about open television channels displaying
719 # programs inappropriate to youths in the states that had the timezone
720 # UTC+5 too early in the night. In the occasion, some more corrections
721 # were proposed, trying to unify the timezones of any given state. This
722 # change modifies timezone rules defined in decree 2.784 of 18 June,
723 # 1913.
724
725 # From Rodrigo Severo (2008-06-24):
726 # Just correcting the URL:
727 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008
728 #
729 # As a result of the above Decree I believe the America/Rio_Branco
730 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall
731 # be created to represent the...west side of the Pará State. I
732 # suggest this new timezone be called Santarem as the most
733 # important/populated city in the affected area.
734 #
735 # This new timezone would be the same as the Rio_Branco timezone up to
736 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4.
737
738 # From Alex Krivenyshev (2008-06-24):
739 # This is a quick reference page for New and Old Brazil Time Zones map.
740 # http://www.worldtimezone.com/brazil-time-new-old.php
741 #
742 # - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05
743 # (state Acre and the part of the Amazonas will be UTC/GMT-04) - western
744 # part of Par state is moving to one timezone UTC-03 (from UTC-04).
745
746 # From Paul Eggert (2002-10-10):
747 # The official decrees referenced below are mostly taken from
748 # Decretos sobre o Horário de Verão no Brasil
749 # <http://pcdsh01.on.br/DecHV.html>.
750
751 # From Steffen Thorsen (2008-08-29):
752 # As announced by the government and many newspapers in Brazil late
753 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
754 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on
755 # past years experience with the elections, there was a good chance that
756 # the start was postponed to November, but it did not happen this year.
757 #
758 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html
759 #
760 # An official page about it:
761 # http://www.mme.gov.br/site/news/detail.do?newsId=16722
762 # Note that this link does not always work directly, but must be accessed
763 # by going to
764 # http://www.mme.gov.br/first
765 #
766 # One example link that works directly:
767 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
768 # (Portuguese)
769 #
770 # We have a written a short article about it as well:
771 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
772 #
773 # From Alexander Krivenyshev (2011-10-04):
774 # State Bahia will return to Daylight savings time this year after 8 years off.
775 # The announcement was made by Governor Jaques Wagner in an interview to a
776 # television station in Salvador.
777
778 # In Portuguese:
779 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
780 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
781
782 # From Guilherme Bernardes Rodrigues (2011-10-07):
783 # There is news in the media, however there is still no decree about it.
784 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
785 # official agency about time in Brazil, and she confirmed that the old rule is
786 # still in force.
787
788 # From Guilherme Bernardes Rodrigues (2011-10-14)
789 # It's official, the President signed a decree that includes Bahia in summer
790 # time.
791 # [ and in a second message (same day): ]
792 # I found the decree.
793 #
794 # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011
795 # Link :
796 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
797
798 # From Kelley Cook (2012-10-16):
799 # The governor of state of Bahia in Brazil announced on Thursday that
800 # due to public pressure, he is reversing the DST policy they implemented
801 # last year and will not be going to Summer Time on October 21st....
802 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
803
804 # From Rodrigo Severo (2012-10-16):
805 # Tocantins state will have DST.
806 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
807
808 # From Steffen Thorsen (2013-09-20):
809 # Tocantins in Brazil is very likely not to observe DST from October....
810 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
811 # We will keep this article updated when this is confirmed:
812 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
813
814 # From Steffen Thorsen (2013-10-17):
815 # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
816 # Senator Jorge Viana announced that Acre will change time zone on November 10.
817 # He did not specify the time of the change, nor if western parts of Amazonas
818 # will change as well.
819 #
820 # From Paul Eggert (2013-10-17):
821 # For now, assume western Amazonas will change as well.
822
823 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
824 # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
825 # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
826 Rule Brazil 1931 only - Oct 3 11:00 1:00 S
827 Rule Brazil 1932 1933 - Apr 1 0:00 0 -
828 Rule Brazil 1932 only - Oct 3 0:00 1:00 S
829 # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
830 # revoked DST.
831 # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
832 # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
833 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
834 Rule Brazil 1950 only - Apr 16 1:00 0 -
835 Rule Brazil 1951 1952 - Apr 1 0:00 0 -
836 # Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)
837 Rule Brazil 1953 only - Mar 1 0:00 0 -
838 # Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30)
839 # revoked DST.
840 # Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18)
841 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00
842 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
843 # Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)
844 # extended the above decree to all of the national territory on 12-09.
845 Rule Brazil 1963 only - Dec 9 0:00 1:00 S
846 # Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)
847 # extended summer time by one day to 1964-03-01 00:00 (start of school).
848 Rule Brazil 1964 only - Mar 1 0:00 0 -
849 # Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27)
850 Rule Brazil 1965 only - Jan 31 0:00 1:00 S
851 Rule Brazil 1965 only - Mar 31 0:00 0 -
852 # Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22)
853 Rule Brazil 1965 only - Dec 1 0:00 1:00 S
854 # Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)
855 Rule Brazil 1966 1968 - Mar 1 0:00 0 -
856 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
857 # Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)
858 # revoked DST.
859 # Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27)
860 Rule Brazil 1985 only - Nov 2 0:00 1:00 S
861 # Decree 92,310 (1986-01-21)
862 # Decree 92,463 (1986-03-13)
863 Rule Brazil 1986 only - Mar 15 0:00 0 -
864 # Decree 93,316 (1986-10-01)
865 Rule Brazil 1986 only - Oct 25 0:00 1:00 S
866 Rule Brazil 1987 only - Feb 14 0:00 0 -
867 # Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22)
868 Rule Brazil 1987 only - Oct 25 0:00 1:00 S
869 Rule Brazil 1988 only - Feb 7 0:00 0 -
870 # Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)
871 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
872 Rule Brazil 1988 only - Oct 16 0:00 1:00 S
873 Rule Brazil 1989 only - Jan 29 0:00 0 -
874 # Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)
875 # with the same exceptions
876 Rule Brazil 1989 only - Oct 15 0:00 1:00 S
877 Rule Brazil 1990 only - Feb 11 0:00 0 -
878 # Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)
879 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
880 # Decree 99,629 (1990-10-19) adds BA, MT.
881 Rule Brazil 1990 only - Oct 21 0:00 1:00 S
882 Rule Brazil 1991 only - Feb 17 0:00 0 -
883 # Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)
884 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
885 Rule Brazil 1991 only - Oct 20 0:00 1:00 S
886 Rule Brazil 1992 only - Feb 9 0:00 0 -
887 # Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)
888 # adopted by same states.
889 Rule Brazil 1992 only - Oct 25 0:00 1:00 S
890 Rule Brazil 1993 only - Jan 31 0:00 0 -
891 # Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)
892 # adopted by same states, plus AM.
893 # Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22;
894 # web page corrected 2004-01-07) adopted by same states, minus AM.
895 # Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14)
896 # adopted by same states, plus MT and TO.
897 # Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)
898 # adds AL, SE.
899 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S
900 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -
901 Rule Brazil 1996 only - Feb 11 0:00 0 -
902 # Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)
903 # adopted by same states, minus AL, SE.
904 Rule Brazil 1996 only - Oct 6 0:00 1:00 S
905 Rule Brazil 1997 only - Feb 16 0:00 0 -
906 # From Daniel C. Sobral (1998-02-12):
907 # In 1997, the DS began on October 6. The stated reason was that
908 # because international television networks ignored Brazil's policy on DS,
909 # they bought the wrong times on satellite for coverage of Pope's visit.
910 # This year, the ending date of DS was postponed to March 1
911 # to help dealing with the shortages of electric power.
912 #
913 # Decree 2,317 (1997-09-04), adopted by same states.
914 Rule Brazil 1997 only - Oct 6 0:00 1:00 S
915 # Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>
916 # (1998-02-10)
917 Rule Brazil 1998 only - Mar 1 0:00 0 -
918 # Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)
919 # adopted by the same states as before.
920 Rule Brazil 1998 only - Oct 11 0:00 1:00 S
921 Rule Brazil 1999 only - Feb 21 0:00 0 -
922 # Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>
923 # (1999-08-23) adopted by same states.
924 # Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)
925 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
926 Rule Brazil 1999 only - Oct 3 0:00 1:00 S
927 Rule Brazil 2000 only - Feb 27 0:00 0 -
928 # Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)
929 # adopted by the same states as before.
930 # Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13)
931 # repeals DST in PE and RR, effective 2000-10-15 00:00.
932 # Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17)
933 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
934 # Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>
935 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
936 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S
937 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 -
938 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
939 # 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm>
940 Rule Brazil 2002 only - Nov 3 0:00 1:00 S
941 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
942 # 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm>
943 Rule Brazil 2003 only - Oct 19 0:00 1:00 S
944 # Decree 5,223 (2004-10-01) reestablishes DST in MT.
945 # 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm>
946 Rule Brazil 2004 only - Nov 2 0:00 1:00 S
947 # Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),
948 # adopted by the same states as before.
949 Rule Brazil 2005 only - Oct 16 0:00 1:00 S
950 # Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),
951 # adopted by the same states as before.
952 Rule Brazil 2006 only - Nov 5 0:00 1:00 S
953 Rule Brazil 2007 only - Feb 25 0:00 0 -
954 # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
955 # adopted by the same states as before.
956 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
957 # From Frederico A. C. Neves (2008-09-10):
958 # According to this decree
959 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
960 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
961 # 3rd Feb Sunday. There is an exception on the return date when this is
962 # the Carnival Sunday then the return date will be the next Sunday...
963 Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
964 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
965 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
966 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
967 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
968 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
969 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
970 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
971 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
972 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
973 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
974 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
975 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
976 # From Arthur David Olson (2008-09-29):
977 # The next is wrong in some years but is better than nothing.
978 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
979
980 # The latest ruleset listed above says that the following states observe DST:
981 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
982
983 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
984 #
985 # Fernando de Noronha (administratively part of PE)
986 Zone America/Noronha -2:09:40 - LMT 1914
987 -2:00 Brazil FN%sT 1990 Sep 17
988 -2:00 - FNT 1999 Sep 30
989 -2:00 Brazil FN%sT 2000 Oct 15
990 -2:00 - FNT 2001 Sep 13
991 -2:00 Brazil FN%sT 2002 Oct 1
992 -2:00 - FNT
993 # Other Atlantic islands have no permanent settlement.
994 # These include Trindade and Martim Vaz (administratively part of ES),
995 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
996 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
997 # it also included the Penedos.
998 #
999 # Amapá (AP), east Pará (PA)
1000 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
1001 # The division between east and west Pará is the river Xingu.
1002 # In the north a very small part from the river Javary (now Jari I guess,
1003 # the border with Amapá) to the Amazon, then to the Xingu.
1004 Zone America/Belem -3:13:56 - LMT 1914
1005 -3:00 Brazil BR%sT 1988 Sep 12
1006 -3:00 - BRT
1007 #
1008 # west Pará (PA)
1009 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
1010 Zone America/Santarem -3:38:48 - LMT 1914
1011 -4:00 Brazil AM%sT 1988 Sep 12
1012 -4:00 - AMT 2008 Jun 24 00:00
1013 -3:00 - BRT
1014 #
1015 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
1016 # Paraíba (PB)
1017 Zone America/Fortaleza -2:34:00 - LMT 1914
1018 -3:00 Brazil BR%sT 1990 Sep 17
1019 -3:00 - BRT 1999 Sep 30
1020 -3:00 Brazil BR%sT 2000 Oct 22
1021 -3:00 - BRT 2001 Sep 13
1022 -3:00 Brazil BR%sT 2002 Oct 1
1023 -3:00 - BRT
1024 #
1025 # Pernambuco (PE) (except Atlantic islands)
1026 Zone America/Recife -2:19:36 - LMT 1914
1027 -3:00 Brazil BR%sT 1990 Sep 17
1028 -3:00 - BRT 1999 Sep 30
1029 -3:00 Brazil BR%sT 2000 Oct 15
1030 -3:00 - BRT 2001 Sep 13
1031 -3:00 Brazil BR%sT 2002 Oct 1
1032 -3:00 - BRT
1033 #
1034 # Tocantins (TO)
1035 Zone America/Araguaina -3:12:48 - LMT 1914
1036 -3:00 Brazil BR%sT 1990 Sep 17
1043 # Alagoas (AL), Sergipe (SE)
1044 Zone America/Maceio -2:22:52 - LMT 1914
1045 -3:00 Brazil BR%sT 1990 Sep 17
1046 -3:00 - BRT 1995 Oct 13
1047 -3:00 Brazil BR%sT 1996 Sep 4
1048 -3:00 - BRT 1999 Sep 30
1049 -3:00 Brazil BR%sT 2000 Oct 22
1050 -3:00 - BRT 2001 Sep 13
1051 -3:00 Brazil BR%sT 2002 Oct 1
1052 -3:00 - BRT
1053 #
1054 # Bahia (BA)
1055 # There are too many Salvadors elsewhere, so use America/Bahia instead
1056 # of America/Salvador.
1057 Zone America/Bahia -2:34:04 - LMT 1914
1058 -3:00 Brazil BR%sT 2003 Sep 24
1059 -3:00 - BRT 2011 Oct 16
1060 -3:00 Brazil BR%sT 2012 Oct 21
1061 -3:00 - BRT
1062 #
1063 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
1064 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
1065 # Santa Catarina (SC), Rio Grande do Sul (RS)
1066 Zone America/Sao_Paulo -3:06:28 - LMT 1914
1067 -3:00 Brazil BR%sT 1963 Oct 23 00:00
1068 -3:00 1:00 BRST 1964
1069 -3:00 Brazil BR%sT
1070 #
1071 # Mato Grosso do Sul (MS)
1072 Zone America/Campo_Grande -3:38:28 - LMT 1914
1073 -4:00 Brazil AM%sT
1074 #
1075 # Mato Grosso (MT)
1076 Zone America/Cuiaba -3:44:20 - LMT 1914
1077 -4:00 Brazil AM%sT 2003 Sep 24
1078 -4:00 - AMT 2004 Oct 1
1079 -4:00 Brazil AM%sT
1080 #
1081 # Rondônia (RO)
1082 Zone America/Porto_Velho -4:15:36 - LMT 1914
1083 -4:00 Brazil AM%sT 1988 Sep 12
1084 -4:00 - AMT
1085 #
1086 # Roraima (RR)
1087 Zone America/Boa_Vista -4:02:40 - LMT 1914
1088 -4:00 Brazil AM%sT 1988 Sep 12
1089 -4:00 - AMT 1999 Sep 30
1090 -4:00 Brazil AM%sT 2000 Oct 15
1091 -4:00 - AMT
1092 #
1093 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
1094 # The great circle line from Tabatinga to Porto Acre divides
1095 # east from west Amazonas.
1096 Zone America/Manaus -4:00:04 - LMT 1914
1097 -4:00 Brazil AM%sT 1988 Sep 12
1098 -4:00 - AMT 1993 Sep 28
1099 -4:00 Brazil AM%sT 1994 Sep 22
1100 -4:00 - AMT
1101 #
1102 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1103 # Eirunepé, Envira, Ipixuna
1104 Zone America/Eirunepe -4:39:28 - LMT 1914
1105 -5:00 Brazil AC%sT 1988 Sep 12
1106 -5:00 - ACT 1993 Sep 28
1107 -5:00 Brazil AC%sT 1994 Sep 22
1108 -5:00 - ACT 2008 Jun 24 00:00
1109 -4:00 - AMT 2013 Nov 10
1110 -5:00 - ACT
1111 #
1112 # Acre (AC)
1113 Zone America/Rio_Branco -4:31:12 - LMT 1914
1114 -5:00 Brazil AC%sT 1988 Sep 12
1115 -5:00 - ACT 2008 Jun 24 00:00
1116 -4:00 - AMT 2013 Nov 10
1117 -5:00 - ACT
1118
1119 # Chile
1120
1121 # From Eduardo Krell (1995-10-19):
1122 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
1123 # of October.... The law is the same for March and October.
1124 # (1998-09-29):
1125 # Because of the drought this year, the government decided to go into
1126 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1127 # (unless there's another dry season next year, I guess).
1128
1129 # From Julio I. Pacheco Troncoso (1999-03-18):
1130 # Because of the same drought, the government decided to end DST later,
1131 # on April 3, (one-time change).
1132
1133 # From Oscar van Vlijmen (2006-10-08):
1134 # http://www.horaoficial.cl/cambio.htm
1135
1136 # From Jesper Nørgaard Welen (2006-10-08):
1137 # I think that there are some obvious mistakes in the suggested link
1138 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
1139 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
1140 # (they should have been 1990-09-15 and 1990-09-16 respectively), but
1141 # anyhow it clears up some doubts too.
1142
1143 # From Paul Eggert (2006-12-27):
1144 # The following data for Chile and America/Santiago are from
1145 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
1146 # Jesper Nørgaard Welen. The data for Pacific/Easter are from Shanks
1147 # & Pottenger, except with DST transitions after 1932 cloned from
1148 # America/Santiago. The pre-1980 Pacific/Easter data are dubious,
1149 # but we have no other source.
1150
1151 # From Germán Poo-Caamaño (2008-03-03):
1152 # Due to drought, Chile extends Daylight Time in three weeks. This
1153 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1154 # and Saturday 3/29 at 22:00 for Pacific/Easter)
1155 # The Supreme Decree is located at
1156 # http://www.shoa.cl/servicios/supremo316.pdf
1157 # and the instructions for 2008 are located in:
1158 # http://www.horaoficial.cl/cambio.htm
1159
1160 # From José Miguel Garrido (2008-03-05):
1161 # ...
1162 # You could see the announces of the change on
1163 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
1164
1165 # From Angel Chiang (2010-03-04):
1166 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1167 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1168 # (in Spanish, last paragraph).
1169 #
1170 # This is breaking news. There should be more information available later.
1171
1172 # From Arthur Daivd Olson (2010-03-06):
1173 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1174
1175 # From Glenn Eychaner (2011-03-02): [geychaner@mac.com]
1176 # It appears that the Chilean government has decided to postpone the
1177 # change from summer time to winter time again, by three weeks to April
1178 # 2nd:
1179 # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651
1180 #
1181 # This is not yet reflected in the official "cambio de hora" site, but
1182 # probably will be soon:
1183 # http://www.horaoficial.cl/cambio.htm
1184
1185 # From Arthur David Olson (2011-03-02):
1186 # The emol.com article mentions a water shortage as the cause of the
1187 # postponement, which may mean that it's not a permanent change.
1188
1189 # From Glenn Eychaner (2011-03-28):
1190 # The article:
1191 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1192 #
1193 # In English:
1194 # Chile's clocks will go back an hour this year on the 7th of May instead
1195 # of this Saturday. They will go forward again the 3rd Saturday in
1196 # August, not in October as they have since 1968. This is a pilot plan
1197 # which will be reevaluated in 2012.
1198
1199 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1200 # As stated in the website of the Chilean Energy Ministry
1201 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1202 # The Chilean Government has decided to postpone the entrance into winter time
1203 # (to leave DST) from March 11 2012 to April 28th 2012. The decision has not
1204 # been yet formalized but it will within the next days.
1205 # Quote from the website communication:
1206 #
1207 # 6. For the year 2012, the dates of entry into winter time will be as follows:
1208 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1209 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1210 # of the same day.
1211 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1212 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1213 # 01:00 on September 2.
1214
1215 # From Steffen Thorsen (2013-02-15):
1216 # According to several news sources, Chile has extended DST this year,
1217 # they will end DST later and start DST earlier than planned. They
1218 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1219 # start date is 2013-09-08 00:00....
1220 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1221
1222 # From José Miguel Garrido (2014-02-19):
1223 # Today appeared in the Diario Oficial a decree amending the time change
1224 # dates to 2014.
1225 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1226 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1227 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1228
1229 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1230 # 'antarctica' file.
1231
1232 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1233 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1234 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1235 Rule Chile 1942 only - Jun 1 4:00u 0 -
1236 Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1237 Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1238 Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1239 Rule Chile 1947 only - Apr 1 4:00u 0 -
1240 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1241 Rule Chile 1969 only - Mar 30 3:00u 0 -
1242 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1268 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1269 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1270 Rule Chile 2012 max - Apr Sun>=23 3:00u 0 -
1271 Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S
1272 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1273 # (1996-09) says 1998-03-08. Ignore these.
1274 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1275 Zone America/Santiago -4:42:46 - LMT 1890
1276 -4:42:46 - SMT 1910 # Santiago Mean Time
1277 -5:00 - CLT 1916 Jul 1 # Chile Time
1278 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1279 -4:00 - CLT 1919 Jul 1 # Chile Time
1280 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1281 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1282 -4:00 Chile CL%sT
1283 Zone Pacific/Easter -7:17:44 - LMT 1890
1284 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1285 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time
1286 -6:00 Chile EAS%sT
1287 #
1288 # Salas y Gómez Island is uninhabited.
1289 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1290 # and Antarctic bases, are like America/Santiago.
1291
1292 # Colombia
1293
1294 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1295 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1296
1297 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1298 Rule CO 1992 only - May 3 0:00 1:00 S
1299 Rule CO 1993 only - Apr 4 0:00 0 -
1300 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1301 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1302 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1303 -5:00 CO CO%sT # Colombia Time
1304 # Malpelo, Providencia, San Andres
1305 # no information; probably like America/Bogota
1306
1307 # Curaçao
1308
1309 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1310 #
1311 # From Paul Eggert (2006-03-22):
1312 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1313 # -4:00 since standard time was introduced on 1912-03-02; and that
1314 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1315 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1316 # Saba Island has been like Curaçao.
1317 # This all predates our 1970 cutoff, though.
1318 #
1319 # By July 2007 Curaçao and St Maarten are planned to become
1320 # associated states within the Netherlands, much like Aruba;
1321 # Bonaire, Saba and St Eustatius would become directly part of the
1322 # Netherlands as Kingdom Islands. This won't affect their time zones
1323 # though, as far as we know.
1324 #
1325 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1326 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1327 -4:30 - ANT 1965 # Netherlands Antilles Time
1328 -4:00 - AST
1329
1330 # From Arthur David Olson (2011-06-15):
1331 # use links for places with new iso3166 codes.
1332 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1333 # and contains an apostrophe; use "Lower_Princes" below.
1334
1335 Link America/Curacao America/Lower_Princes # Sint Maarten
1336 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1337
1338 # Ecuador
1339 #
1340 # Milne says the Central and South American Telegraph Company used -5:24:15.
1341 #
1342 # From Paul Eggert (2007-03-04):
1343 # Apparently Ecuador had a failed experiment with DST in 1992.
1344 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
1345 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
1346 # talk about "hora Sixto". Leave this alone for now, as we have no data.
1347 #
1348 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1349 Zone America/Guayaquil -5:19:20 - LMT 1890
1350 -5:14:00 - QMT 1931 # Quito Mean Time
1351 -5:00 - ECT # Ecuador Time
1352 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1353 -5:00 - ECT 1986
1354 -6:00 - GALT # Galápagos Time
1355
1356 # Falklands
1357
1358 # From Paul Eggert (2006-03-22):
1359 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1360 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1361
1362 # From Falkland Islands Government Office, London (2001-01-22)
1363 # via Jesper Nørgaard:
1364 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1365 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1366 # September. It is anticipated that the clocks will revert back at 2
1367 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1368 # Sunday 1 September.
1369
1370 # From Rives McDow (2001-02-13):
1371 #
1372 # I have communicated several times with people there, and the last
1373 # time I had communications that was helpful was in 1998. Here is
1374 # what was said then:
1375 #
1376 # "The general rule was that Stanley used daylight saving and the Camp
1377 # did not. However for various reasons many people in the Camp have
1378 # started to use daylight saving (known locally as 'Stanley Time')
1379 # There is no rule as to who uses daylight saving - it is a matter of
1380 # personal choice and so it is impossible to draw a map showing who
1381 # uses it and who does not. Any list would be out of date as soon as
1382 # it was produced. This year daylight saving ended on April 18/19th
1383 # and started again on September 12/13th. I do not know what the rule
1392 # Falklands do not use DST. I have found in my communications there
1393 # that these areas are on the western half of East Falkland and all of
1394 # West Falkland. Stanley is the only place that consistently observes
1395 # DST. Again, as in other places in the world, the farmers don't like
1396 # it. West Falkland is almost entirely sheep farmers.
1397 #
1398 # I know one lady there that keeps a list of which farm keeps DST and
1399 # which doesn't each year. She runs a shop in Stanley, and says that
1400 # the list changes each year. She uses it to communicate to her
1401 # customers, catching them when they are home for lunch or dinner.
1402
1403 # From Paul Eggert (2001-03-05):
1404 # For now, we'll just record the time in Stanley, since we have no
1405 # better info.
1406
1407 # From Steffen Thorsen (2011-04-01):
1408 # The Falkland Islands will not turn back clocks this winter, but stay on
1409 # daylight saving time.
1410 #
1411 # One source:
1412 # http://www.falklandnews.com/public/story.cfm?get=5914&source=3
1413 #
1414 # We have gotten this confirmed by a clerk of the legislative assembly:
1415 # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the
1416 # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3
1417 # hours) on the first Sunday of September at 0200hrs.
1418 #
1419 # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands
1420 # will not revert to local mean time, but clocks will remain on Summer
1421 # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term
1422 # change to local time following the trial period will be notified.
1423 #
1424 # From Andrew Newman (2012-02-24)
1425 # A letter from Justin McPhee, Chief Executive,
1426 # Cable & Wireless Falkland Islands (dated 2012-02-22)
1427 # states...
1428 # The current Atlantic/Stanley entry under South America expects the
1429 # clocks to go back to standard Falklands Time (FKT) on the 15th April.
1430 # The database entry states that in 2011 Stanley was staying on fixed
1431 # summer time on a trial basis only. FIG need to contact IANA and/or
1432 # the maintainers of the database to inform them we're adopting
1457 -3:00 - FKST
1458
1459 # French Guiana
1460 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1461 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1462 -4:00 - GFT 1967 Oct # French Guiana Time
1463 -3:00 - GFT
1464
1465 # Guyana
1466 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1467 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1468 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1469 -3:45 - GYT 1975 Jul 31 # Guyana Time
1470 -3:00 - GYT 1991
1471 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1472 -4:00 - GYT
1473
1474 # Paraguay
1475 #
1476 # From Paul Eggert (2006-03-22):
1477 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1478 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1479 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1480 #
1481 # From Waldemar Villamayor-Venialbo (2013-09-20):
1482 # No time of the day is established for the adjustment, so people normally
1483 # adjust their clocks at 0 hour of the given dates.
1484 #
1485 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1486 Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1487 Rule Para 1975 1978 - Mar 1 0:00 0 -
1488 Rule Para 1979 1991 - Apr 1 0:00 0 -
1489 Rule Para 1989 only - Oct 22 0:00 1:00 S
1490 Rule Para 1990 only - Oct 1 0:00 1:00 S
1491 Rule Para 1991 only - Oct 6 0:00 1:00 S
1492 Rule Para 1992 only - Mar 1 0:00 0 -
1493 Rule Para 1992 only - Oct 5 0:00 1:00 S
1494 Rule Para 1993 only - Mar 31 0:00 0 -
1495 Rule Para 1993 1995 - Oct 1 0:00 1:00 S
1496 Rule Para 1994 1995 - Feb lastSun 0:00 0 -
1497 Rule Para 1996 only - Mar 1 0:00 0 -
1498 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
1499 # From Steffen Thorsen (2000-10-02):
1500 # I have three independent reports that Paraguay changed to DST this Sunday
1501 # (10-01).
1502 #
1503 # Translated by Gwillim Law (2001-02-27) from
1504 # Noticias, a daily paper in Asunción, Paraguay (2000-10-01)
1505 # <http://www.diarionoticias.com.py/011000/nacional/naciona1.htm>:
1506 # Starting at 0:00 today, the clock will be set forward 60 minutes, in
1507 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change
1508 # system has been operating for several years. Formerly there was a separate
1509 # decree each year; the new law has the same effect, but permanently. Every
1510 # year, the time will change on the first Sunday of October; likewise, the
1511 # clock will be set back on the first Sunday of March.
1512 #
1513 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
1514 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1515 Rule Para 1997 only - Feb lastSun 0:00 0 -
1516 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1517 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1518 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
1519 # From Rives McDow (2002-02-28):
1520 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the
1521 # dst method to be from the first Sunday in September to the first Sunday in
1522 # April.
1523 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
1524 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
1525 #
1526 # From Jesper Nørgaard Welen (2005-01-02):
1527 # There are several sources that claim that Paraguay made
1528 # a timezone rule change in autumn 2004.
1529 # From Steffen Thorsen (2005-01-05):
1530 # Decree 1,867 (2004-03-05)
1531 # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
1532 # <http://www.presidencia.gov.py/decretos/D1867.pdf>
1533 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
1534 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
1535 # From Carlos Raúl Perasso (2010-02-18):
1536 # By decree number 3958 issued yesterday
1537 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1538 # Paraguay changes its DST schedule, postponing the March rule to April and
1539 # modifying the October date. The decree reads:
1540 # ...
1541 # Art. 1. It is hereby established that from the second Sunday of the month of
1542 # April of this year (2010), the official time is to be set back 60 minutes,
1543 # and that on the first Sunday of the month of October, it is to be set
1544 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1545 # ...
1546 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
1547 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1548 #
1549 # From Steffen Thorsen (2013-03-07):
1550 # Paraguay will end DST on 2013-03-24 00:00....
1551 # http://www.ande.gov.py/interna.php?id=1075
1552 #
1553 # From Carlos Raúl Perasso (2013-03-15):
1554 # The change in Paraguay is now final. Decree number 10780
1555 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1556 # From Carlos Raúl Perasso (2014-02-28):
1557 # Decree 1264 can be found at:
1558 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1559 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1560
1561 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1562 Zone America/Asuncion -3:50:40 - LMT 1890
1563 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1564 -4:00 - PYT 1972 Oct # Paraguay Time
1565 -3:00 - PYT 1974 Apr
1566 -4:00 Para PY%sT
1567
1568 # Peru
1569 #
1570 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1571 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1572 # When we were in Peru in 1985-1986, they apparently switched over
1573 # sometime between December 29 and January 3 while we were on the Amazon.
1574 #
1575 # From Paul Eggert (2006-03-22):
1576 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1577
1578 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1579 Rule Peru 1938 only - Jan 1 0:00 1:00 S
1580 Rule Peru 1938 only - Apr 1 0:00 0 -
1581 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
1582 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1583 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
1584 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1585 Rule Peru 1990 only - Jan 1 0:00 1:00 S
1586 Rule Peru 1990 only - Apr 1 0:00 0 -
1587 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1588 Rule Peru 1994 only - Jan 1 0:00 1:00 S
1589 Rule Peru 1994 only - Apr 1 0:00 0 -
1590 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1591 Zone America/Lima -5:08:12 - LMT 1890
1604 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1605 Zone America/Paramaribo -3:40:40 - LMT 1911
1606 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1607 -3:40:36 - PMT 1945 Oct # The capital moved?
1608 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1609 -3:30 - SRT 1984 Oct # Suriname Time
1610 -3:00 - SRT
1611
1612 # Trinidad and Tobago
1613 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1614 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1615 -4:00 - AST
1616
1617 # These all agree with Trinidad and Tobago since 1970.
1618 Link America/Port_of_Spain America/Anguilla
1619 Link America/Port_of_Spain America/Dominica
1620 Link America/Port_of_Spain America/Grenada
1621 Link America/Port_of_Spain America/Guadeloupe
1622 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1623 Link America/Port_of_Spain America/Montserrat
1624 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1625 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1626 Link America/Port_of_Spain America/St_Lucia
1627 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1628 Link America/Port_of_Spain America/St_Vincent
1629 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1630
1631 # Uruguay
1632 # From Paul Eggert (1993-11-18):
1633 # Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1634 # From Shanks & Pottenger:
1635 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1636 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1637 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1638 Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1639 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
1640 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
1641 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1642 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
1643 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
1644 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
1677 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA.
1678 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
1679 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
1680 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
1681 Rule Uruguay 1993 only - Feb 28 0:00 0 -
1682 # From Eduardo Cota (2004-09-20):
1683 # The uruguayan government has decreed a change in the local time....
1684 # http://www.presidencia.gub.uy/decretos/2004091502.htm
1685 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
1686 # From Steffen Thorsen (2005-03-11):
1687 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1688 # save energy ... it was postponed two weeks....
1689 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1690 Rule Uruguay 2005 only - Mar 27 2:00 0 -
1691 # From Eduardo Cota (2005-09-27):
1692 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1693 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1694 # 02:00 local time, official time in Uruguay will be at GMT -2.
1695 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1696 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1697 # From Jesper Nørgaard Welen (2006-09-06):
1698 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1699 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S
1700 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 -
1701 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1702 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1703 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1704 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1705 -3:00 Uruguay UY%sT
1706
1707 # Venezuela
1708 #
1709 # From John Stainforth (2007-11-28):
1710 # ... the change for Venezuela originally expected for 2007-12-31 has
1711 # been brought forward to 2007-12-09. The official announcement was
1712 # published today in the "Gaceta Oficial de la República Bolivariana
1713 # de Venezuela, número 38.819" (official document for all laws or
1714 # resolution publication)
1715 # http://www.globovision.com/news.php?nid=72208
1716
1717 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1718 Zone America/Caracas -4:27:44 - LMT 1890
1719 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1720 -4:30 - VET 1965 # Venezuela Time
1721 -4:00 - VET 2007 Dec 9 03:00
1722 -4:30 - VET
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