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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 file 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). For more, please see
30 # the file CONTRIBUTING in the tz distribution.
31
32 # From Paul Eggert (2014-10-31):
33 #
34 # Unless otherwise specified, the source for data through 1990 is:
35 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
36 # San Diego: ACS Publications, Inc. (2003).
37 # Unfortunately this book contains many errors and cites no sources.
38 #
39 # Gwillim Law writes that a good source
40 # for recent time zone data is the International Air Transport
41 # Association's Standard Schedules Information Manual (IATA SSIM),
42 # published semiannually. Law sent in several helpful summaries
43 # of the IATA's data after 1990. Except where otherwise noted,
44 # IATA SSIM is the source for entries after 1990.
45 #
46 # For data circa 1899, a common source is:
47 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
48 # http://www.jstor.org/stable/1774359
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 São 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 Brasília time" is considered the
65 # "official time" because Brasília is the capital city.
66 # The other three time zones are called "Brasília 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 Brasília
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 (1988-01-19):
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 Hidrografía 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 São 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 Fabián L. Arce Jofré (2000-04-04):
148 # The law that claimed DST for Argentina was derogated by President Fernando
149 # de la Rúa 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 Nørgaard Welen (2007-12-26)
183 # The last hurdle of Argentina DST is over, the proposal was approved in
184 # the lower chamber too (Diputados) 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 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
189 #
190 # From Paul Eggert (2007-12-22):
191 # For dates after mid-2008, the following rules are my guesses and
192 # are quite possibly wrong, but are more likely than no DST at all.
193
194 # From Alexander Krivenyshev (2008-09-05):
195 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
196 # Argentina will start DST on Sunday October 19, 2008.
197 #
198 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
199 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
200
201 # From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07)
202 # via Rodrigo Severo:
203 # Argentinian law No. 25.155 is no longer valid.
204 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
205 # The new one is law No. 26.350
206 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
207 # So there is no summer time in Argentina for now.
208
209 # From Mariano Absatz (2008-10-20):
210 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST
211 # in Argentina from 2008-10-19 until 2009-03-15.
212 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
213 #
214
215 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer
216 # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La
217 # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego
218 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
219 #
220 # Press release 235 dated Saturday October 18th, from the Government of the
221 # Province of Jujuy saying it will not apply DST either (even when it was not
222 # included in Decree 1705/2008).
223 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
224
225 # From fullinet (2009-10-18):
226 # As announced in
227 # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356
228 # (an official .gob.ar) under title: "Sin Cambio de Hora"
229 # (English: "No hour change").
230 #
231 # "Por el momento, el Gobierno Nacional resolvió no modificar la hora
232 # oficial, decisión que estaba en estudio para su implementación el
233 # domingo 18 de octubre. Desde el Ministerio de Planificación se anunció
234 # que la Argentina hoy, en estas condiciones meteorológicas, no necesita
235 # la modificación del huso horario, ya que 2009 nos encuentra con
236 # crecimiento en la producción y distribución energética."
237
238 Rule Arg 2007 only - Dec 30 0:00 1:00 S
239 Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 -
240 Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
241
242 # From Mariano Absatz (2004-05-21):
243 # Today it was officially published that the Province of Mendoza is changing
244 # its timezone this winter... starting tomorrow night....
245 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf
246 # From Paul Eggert (2004-05-24):
247 # It's Law No. 7,210. This change is due to a public power emergency, so for
248 # now we'll assume it's for this year only.
249 #
250 # From Paul Eggert (2014-08-09):
251 # Hora de verano para la República Argentina
252 # http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html
253 # says that standard time in Argentina from 1894-10-31
254 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value
255 # over Shanks & Pottenger.
256 #
257 # From Mariano Absatz (2004-06-05):
258 # These media articles from a major newspaper mostly cover the current state:
259 # http://www.lanacion.com.ar/04/05/27/de_604825.asp
260 # http://www.lanacion.com.ar/04/05/28/de_605203.asp
261 #
262 # The following eight (8) provinces pulled clocks back to UTC-04:00 at
263 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01).
264 # Apparently, all nine provinces would go back to UTC-03:00 at the same
265 # time in October 17th.
266 #
267 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,
268 # Tierra del Fuego, Tucumán.
269 #
270 # From Mariano Absatz (2004-06-14):
271 # ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00
272 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's
273 # annoyance with the change is much higher than the power savings obtained....
274 #
275 # From Gwillim Law (2004-06-14):
276 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ...
277 # "The time change in Tierra del Fuego was a conflicted decision from
278 # the start. The government had decreed that the measure would take
279 # effect on June 1, but a normative error forced the new time to begin
280 # three days earlier, from a Saturday to a Sunday....
281 # Our understanding was that the change was originally scheduled to take place
282 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other
283 # provinces). Sunday was May 30, only two days earlier. So the article
284 # contains a contradiction. I would give more credence to the Saturday/Sunday
285 # date than the "three days earlier" phrase, and conclude that Tierra del
286 # Fuego set its clocks back at 2004-05-30 00:00.
287 #
288 # From Steffen Thorsen (2004-10-05):
289 # The previous law 7210 which changed the province of Mendoza's time zone
290 # back in May have been modified slightly in a new law 7277, which set the
291 # new end date to 2004-09-26 (original date was 2004-10-17).
292 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf
293 #
294 # From Mariano Absatz (2004-10-05):
295 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
296 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
297 # at midnight between Saturday, July 24th and Sunday, July 25th....
298 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html
299 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html
300 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html
301
302 # From Alex Krivenyshev (2008-01-17):
303 # Here are articles that Argentina Province San Luis is planning to end DST
304 # as earlier as upcoming Monday January 21, 2008 or February 2008:
305 #
306 # Provincia argentina retrasa reloj y marca diferencia con resto del país
307 # (Argentine Province delayed clock and mark difference with the rest of the
308 # country)
309 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
310 #
311 # Es inminente que en San Luis atrasen una hora los relojes
312 # (It is imminent in San Luis clocks one hour delay)
313 # http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
314 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
315
316 # From Jesper Nørgaard Welen (2008-01-18):
317 # The page of the San Luis provincial government
318 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
319 # confirms what Alex Krivenyshev has earlier sent to the tz
320 # emailing list about that San Luis plans to return to standard
321 # time much earlier than the rest of the country. It also
322 # confirms that upon request the provinces San Juan and Mendoza
323 # refused to follow San Luis in this change.
324 #
325 # The change is supposed to take place Monday the 21st at 0:00
326 # hours. As far as I understand it if this goes ahead, we need
327 # a new timezone for San Luis (although there are also documented
328 # independent changes in the southamerica file of San Luis in
329 # 1990 and 1991 which has not been confirmed).
330
331 # From Jesper Nørgaard Welen (2008-01-25):
332 # Unfortunately the below page has become defunct, about the San Luis
333 # time change. Perhaps because it now is part of a group of pages "Most
334 # important pages of 2008."
335 #
336 # You can use
337 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834
338 # instead it seems. Or use "Buscador" from the main page of the San Luis
339 # government, and fill in "huso" and click OK, and you will get 3 pages
340 # from which the first one is identical to the above.
341
342 # From Mariano Absatz (2008-01-28):
343 # I can confirm that the Province of San Luis (and so far only that
344 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008
345 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back
346 # 1 hour), and they intend to keep UTC-3 as their timezone all year round
347 # (that is, unless they change their mind any minute now).
348 #
349 # So we'll have to add yet another city to 'southamerica' (I think San
350 # Luis city is the mos populated city in the Province, so it'd be
351 # America/Argentina/San_Luis... of course I can't remember if San Luis's
352 # history of particular changes goes along with Mendoza or San Juan :-(
353 # (I only remember not being able to collect hard facts about San Luis
354 # back in 2004, when these provinces changed to UTC-4 for a few days, I
355 # mailed them personally and never got an answer).
356
357 # From Paul Eggert (2014-08-12):
358 # Unless otherwise specified, data entries are from Shanks & Pottenger through
359 # 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that
360 # America/Cordoba split into 6 subregions during 1991/1992, one of which
361 # was America/San_Luis, but we haven't verified this yet so for now we'll
362 # keep America/Cordoba a single region rather than splitting it into the
363 # other 5 subregions.
364
365 # From Mariano Absatz (2009-03-13):
366 # Yesterday (with our usual 2-day notice) the Province of San Luis
367 # decided that next Sunday instead of "staying" @utc-03:00 they will go
368 # to utc-04:00 until the second Saturday in October...
369 #
370 # The press release is at
371 # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102
372 # (I couldn't find the decree, but www.sanluis.gov.ar
373 # is the official page for the Province Government.)
374 #
375 # There's also a note in only one of the major national papers ...
376 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912
377 #
378 # The press release says [quick and dirty translation]:
379 # ... announced that next Sunday, at 00:00, Puntanos (the San Luis
380 # inhabitants) will have to turn back one hour their clocks
381 #
382 # Since then, San Luis will establish its own Province timezone. Thus,
383 # during 2009, this timezone change will run from 00:00 the third Sunday
384 # in March until 24:00 of the second Saturday in October.
385
386 # From Mariano Absatz (2009-10-16):
387 # ...the Province of San Luis is a case in itself.
388 #
389 # The Law at
390 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
391 # is ambiguous because establishes a calendar from the 2nd Sunday in
392 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the
393 # complement of that starting on the 2nd Sunday of March at 0:00 and
394 # ending on the 2nd Saturday of March at 24:00.
395 #
396 # This clearly breaks every time the 1st of March or October is a Sunday.
397 #
398 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
399 # Sunday of October and March.
400 #
401 # The problem is that the changes in the rest of the Provinces that did
402 # change in 2007/2008, were made according to the Federal Law and Decrees
403 # that did so on the 3rd Sunday of October and March.
404 #
405 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
406 # (October 11th) at 0:00.
407 #
408 # So I guess a new set of rules, besides "Arg", must be made and the last
409 # America/Argentina/San_Luis entries should change to use these...
410 #
411 # I'm enclosing a patch that does what I say... regretfully, the San Luis
412 # timezone must be called "WART/WARST" even when most of the time (like,
413 # right now) WARST == ART... that is, since last Sunday, all the country
414 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
415 # of the country calls it "ART".
416 # ...
417
418 # From Alexander Krivenyshev (2010-04-09):
419 # According to news reports from El Diario de la República Province San
420 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
421 # after April 11, 2010 - will continue to have same time as rest of
422 # Argentina (UTC-3) (no DST).
423 #
424 # Confirmaron la prórroga del huso horario de verano (Spanish)
425 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
426 # or (some English translation):
427 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
428
429 # From Mariano Absatz (2010-04-12):
430 # yes...I can confirm this...and given that San Luis keeps calling
431 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
432 # rules...San Luis is still using "Western ARgentina Time" and it got
433 # stuck on Summer daylight savings time even though the summer is over.
434
435 # From Paul Eggert (2013-09-05):
436 # Perhaps San Luis operates on the legal fiction that it is at UTC-4
437 # with perpetual summer time, but ordinary usage typically seems to
438 # just say it's at UTC-3; see, for example,
439 # http://es.wikipedia.org/wiki/Hora_oficial_argentina
440 # We've documented similar situations as being plain changes to
441 # standard time, so let's do that here too. This does not change UTC
442 # offsets, only tm_isdst and the time zone abbreviations. One minor
443 # plus is that this silences a zic complaint that there's no POSIX TZ
444 # setting for time stamps past 2038.
445
446 # From Paul Eggert (2013-02-21):
447 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
448
449 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
450 #
451 # Buenos Aires (BA), Capital Federal (CF),
452 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
453 -4:16:48 - CMT 1920 May # Córdoba Mean Time
454 -4:00 - ART 1930 Dec
455 -4:00 Arg AR%sT 1969 Oct 5
456 -3:00 Arg AR%sT 1999 Oct 3
457 -4:00 Arg AR%sT 2000 Mar 3
458 -3:00 Arg AR%sT
459 #
460 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
461 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
462 #
463 # Shanks & Pottenger also make the following claims, which we haven't verified:
464 # - Formosa switched to -3:00 on 1991-01-07.
465 # - Misiones switched to -3:00 on 1990-12-29.
466 # - Chaco switched to -3:00 on 1991-01-04.
467 # - Santiago del Estero switched to -4:00 on 1991-04-01,
468 # then to -3:00 on 1991-04-26.
469 #
470 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
471 -4:16:48 - CMT 1920 May
472 -4:00 - ART 1930 Dec
473 -4:00 Arg AR%sT 1969 Oct 5
474 -3:00 Arg AR%sT 1991 Mar 3
475 -4:00 - WART 1991 Oct 20
476 -3:00 Arg AR%sT 1999 Oct 3
477 -4:00 Arg AR%sT 2000 Mar 3
478 -3:00 Arg AR%sT
479 #
480 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
481 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
482 -4:16:48 - CMT 1920 May
483 -4:00 - ART 1930 Dec
484 -4:00 Arg AR%sT 1969 Oct 5
485 -3:00 Arg AR%sT 1991 Mar 3
486 -4:00 - WART 1991 Oct 20
487 -3:00 Arg AR%sT 1999 Oct 3
488 -4:00 Arg AR%sT 2000 Mar 3
489 -3:00 Arg AR%sT 2008 Oct 18
490 -3:00 - ART
491 #
492 # Tucumán (TM)
493 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31
494 -4:16:48 - CMT 1920 May
495 -4:00 - ART 1930 Dec
496 -4:00 Arg AR%sT 1969 Oct 5
497 -3:00 Arg AR%sT 1991 Mar 3
498 -4:00 - WART 1991 Oct 20
499 -3:00 Arg AR%sT 1999 Oct 3
500 -4:00 Arg AR%sT 2000 Mar 3
501 -3:00 - ART 2004 Jun 1
502 -4:00 - WART 2004 Jun 13
503 -3:00 Arg AR%sT
504 #
505 # La Rioja (LR)
506 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
507 -4:16:48 - CMT 1920 May
508 -4:00 - ART 1930 Dec
509 -4:00 Arg AR%sT 1969 Oct 5
510 -3:00 Arg AR%sT 1991 Mar 1
511 -4:00 - WART 1991 May 7
512 -3:00 Arg AR%sT 1999 Oct 3
513 -4:00 Arg AR%sT 2000 Mar 3
514 -3:00 - ART 2004 Jun 1
515 -4:00 - WART 2004 Jun 20
516 -3:00 Arg AR%sT 2008 Oct 18
517 -3:00 - ART
518 #
519 # San Juan (SJ)
520 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31
521 -4:16:48 - CMT 1920 May
522 -4:00 - ART 1930 Dec
523 -4:00 Arg AR%sT 1969 Oct 5
524 -3:00 Arg AR%sT 1991 Mar 1
525 -4:00 - WART 1991 May 7
526 -3:00 Arg AR%sT 1999 Oct 3
527 -4:00 Arg AR%sT 2000 Mar 3
528 -3:00 - ART 2004 May 31
529 -4:00 - WART 2004 Jul 25
530 -3:00 Arg AR%sT 2008 Oct 18
531 -3:00 - ART
532 #
533 # Jujuy (JY)
534 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31
535 -4:16:48 - CMT 1920 May
536 -4:00 - ART 1930 Dec
537 -4:00 Arg AR%sT 1969 Oct 5
538 -3:00 Arg AR%sT 1990 Mar 4
539 -4:00 - WART 1990 Oct 28
540 -4:00 1:00 WARST 1991 Mar 17
541 -4:00 - WART 1991 Oct 6
542 -3:00 1:00 ARST 1992
543 -3:00 Arg AR%sT 1999 Oct 3
544 -4:00 Arg AR%sT 2000 Mar 3
545 -3:00 Arg AR%sT 2008 Oct 18
546 -3:00 - ART
547 #
548 # Catamarca (CT), Chubut (CH)
549 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
550 -4:16:48 - CMT 1920 May
551 -4:00 - ART 1930 Dec
552 -4:00 Arg AR%sT 1969 Oct 5
553 -3:00 Arg AR%sT 1991 Mar 3
554 -4:00 - WART 1991 Oct 20
555 -3:00 Arg AR%sT 1999 Oct 3
556 -4:00 Arg AR%sT 2000 Mar 3
557 -3:00 - ART 2004 Jun 1
558 -4:00 - WART 2004 Jun 20
559 -3:00 Arg AR%sT 2008 Oct 18
560 -3:00 - ART
561 #
562 # Mendoza (MZ)
563 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31
564 -4:16:48 - CMT 1920 May
565 -4:00 - ART 1930 Dec
566 -4:00 Arg AR%sT 1969 Oct 5
567 -3:00 Arg AR%sT 1990 Mar 4
568 -4:00 - WART 1990 Oct 15
569 -4:00 1:00 WARST 1991 Mar 1
570 -4:00 - WART 1991 Oct 15
571 -4:00 1:00 WARST 1992 Mar 1
572 -4:00 - WART 1992 Oct 18
573 -3:00 Arg AR%sT 1999 Oct 3
574 -4:00 Arg AR%sT 2000 Mar 3
575 -3:00 - ART 2004 May 23
576 -4:00 - WART 2004 Sep 26
577 -3:00 Arg AR%sT 2008 Oct 18
578 -3:00 - ART
579 #
580 # San Luis (SL)
581
582 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
583 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S
584
585 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
586 -4:16:48 - CMT 1920 May
587 -4:00 - ART 1930 Dec
588 -4:00 Arg AR%sT 1969 Oct 5
589 -3:00 Arg AR%sT 1990
590 -3:00 1:00 ARST 1990 Mar 14
591 -4:00 - WART 1990 Oct 15
592 -4:00 1:00 WARST 1991 Mar 1
593 -4:00 - WART 1991 Jun 1
594 -3:00 - ART 1999 Oct 3
595 -4:00 1:00 WARST 2000 Mar 3
596 -3:00 - ART 2004 May 31
597 -4:00 - WART 2004 Jul 25
598 -3:00 Arg AR%sT 2008 Jan 21
599 -4:00 SanLuis WAR%sT 2009 Oct 11
600 -3:00 - ART
601 #
602 # Santa Cruz (SC)
603 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
604 -4:16:48 - CMT 1920 May # Córdoba Mean Time
605 -4:00 - ART 1930 Dec
606 -4:00 Arg AR%sT 1969 Oct 5
607 -3:00 Arg AR%sT 1999 Oct 3
608 -4:00 Arg AR%sT 2000 Mar 3
609 -3:00 - ART 2004 Jun 1
610 -4:00 - WART 2004 Jun 20
611 -3:00 Arg AR%sT 2008 Oct 18
612 -3:00 - ART
613 #
614 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
615 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
616 -4:16:48 - CMT 1920 May # Córdoba Mean Time
617 -4:00 - ART 1930 Dec
618 -4:00 Arg AR%sT 1969 Oct 5
619 -3:00 Arg AR%sT 1999 Oct 3
620 -4:00 Arg AR%sT 2000 Mar 3
621 -3:00 - ART 2004 May 30
622 -4:00 - WART 2004 Jun 20
623 -3:00 Arg AR%sT 2008 Oct 18
624 -3:00 - ART
625
626 # Aruba
627 Link America/Curacao America/Aruba
628
629 # Bolivia
630 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
631 Zone America/La_Paz -4:32:36 - LMT 1890
632 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
633 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
634 -4:00 - BOT # Bolivia Time
635
636 # Brazil
637
638 # From Paul Eggert (1993-11-18):
639 # The mayor of Rio recently attempted to change the time zone rules
640 # just in his city, in order to leave more summer time for the tourist trade.
641 # The rule change lasted only part of the day;
642 # the federal government refused to follow the city's rules, and business
643 # was in a chaos, so the mayor backed down that afternoon.
644
645 # From IATA SSIM (1996-02):
646 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
647 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
648 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
649 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
650 # [The last three states are new to this issue of the IATA SSIM.]
651
652 # From Gwillim Law (1996-10-07):
653 # Geography, history (Tocantins was part of Goiás until 1989), and other
654 # sources of time zone information lead me to believe that AL, SE, and TO were
655 # always in BR1, and so the only change was whether or not they observed DST....
656 # The earliest issue of the SSIM I have is 2/91. Each issue from then until
657 # 9/95 says that DST is observed only in the ten states I quoted from 9/95,
658 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
659 # (UTC-4).... The other two time zones given for Brazil are BR3, which is
660 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
661 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
662 # become part of the state of Pernambuco). The boundary between BR1 and BR2
663 # has never been clearly stated. They've simply been called East and West.
664 # However, some conclusions can be drawn from another IATA manual: the Airline
665 # Coding Directory, which lists close to 400 airports in Brazil. For each
666 # airport it gives a time zone which is coded to the SSIM. From that
667 # information, I'm led to conclude that the states of Amapá (AP), Ceará (CE),
668 # Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do
669 # Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST.
670
671 # From Marcos Tadeu (1998-09-27):
672 # Brazilian official page <http://pcdsh01.on.br/verao1.html>
673
674 # From Jesper Nørgaard (2000-11-03):
675 # [For an official list of which regions in Brazil use which time zones, see:]
676 # http://pcdsh01.on.br/Fusbr.htm
677 # http://pcdsh01.on.br/Fusbrhv.htm
678
679 # From Celso Doria via David Madeo (2002-10-09):
680 # The reason for the delay this year has to do with elections in Brazil.
681 #
682 # Unlike in the United States, elections in Brazil are 100% computerized and
683 # the results are known almost immediately. Yesterday, it was the first
684 # round of the elections when 115 million Brazilians voted for President,
685 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is
686 # counting (or re-counting) votes anymore and we know there will be a second
687 # round for the Presidency and also for some Governors. The 2nd round will
688 # take place on October 27th.
689 #
690 # The reason why the DST will only begin November 3rd is that the thousands
691 # of electoral machines used cannot have their time changed, and since the
692 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,
693 # the Government decided to postpone DST, instead of changing the Constitution
694 # (maybe, for the next elections, it will be possible to change the clock)...
695
696 # From Rodrigo Severo (2004-10-04):
697 # It's just the biannual change made necessary by the much hyped, supposedly
698 # modern Brazilian eletronic voting machines which, apparently, can't deal
699 # with a time change between the first and the second rounds of the elections.
700
701 # From Steffen Thorsen (2007-09-20):
702 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:
703 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975
704
705 # From Paul Schulze (2008-06-24):
706 # ...by law number 11.662 of April 24, 2008 (published in the "Diario
707 # Oficial da União"...) in Brazil there are changes in the timezones,
708 # effective today (00:00am at June 24, 2008) as follows:
709 #
710 # a) The timezone UTC+5 is extinguished, with all the Acre state and the
711 # part of the Amazonas state that had this timezone now being put to the
712 # timezone UTC+4
713 # b) The whole Pará state now is put at timezone UTC+3, instead of just
714 # part of it, as was before.
715 #
716 # This change follows a proposal of senator Tiao Viana of Acre state, that
717 # proposed it due to concerns about open television channels displaying
718 # programs inappropriate to youths in the states that had the timezone
719 # UTC+5 too early in the night. In the occasion, some more corrections
720 # were proposed, trying to unify the timezones of any given state. This
721 # change modifies timezone rules defined in decree 2.784 of 18 June,
722 # 1913.
723
724 # From Rodrigo Severo (2008-06-24):
725 # Just correcting the URL:
726 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008
727 #
728 # As a result of the above Decree I believe the America/Rio_Branco
729 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall
730 # be created to represent the...west side of the Pará State. I
731 # suggest this new timezone be called Santarem as the most
732 # important/populated city in the affected area.
733 #
734 # This new timezone would be the same as the Rio_Branco timezone up to
735 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4.
736
737 # From Alex Krivenyshev (2008-06-24):
738 # This is a quick reference page for New and Old Brazil Time Zones map.
739 # http://www.worldtimezone.com/brazil-time-new-old.php
740 #
741 # - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05
742 # (state Acre and the part of the Amazonas will be UTC/GMT-04) - western
743 # part of Par state is moving to one timezone UTC-03 (from UTC-04).
744
745 # From Paul Eggert (2002-10-10):
746 # The official decrees referenced below are mostly taken from
747 # Decretos sobre o Horário de Verão no Brasil.
748 # http://pcdsh01.on.br/DecHV.html
749
750 # From Steffen Thorsen (2008-08-29):
751 # As announced by the government and many newspapers in Brazil late
752 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
753 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on
754 # past years experience with the elections, there was a good chance that
755 # the start was postponed to November, but it did not happen this year.
756 #
757 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html
758 #
759 # An official page about it:
760 # http://www.mme.gov.br/site/news/detail.do?newsId=16722
761 # Note that this link does not always work directly, but must be accessed
762 # by going to
763 # http://www.mme.gov.br/first
764 #
765 # One example link that works directly:
766 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
767 # (Portuguese)
768 #
769 # We have a written a short article about it as well:
770 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
771 #
772 # From Alexander Krivenyshev (2011-10-04):
773 # State Bahia will return to Daylight savings time this year after 8 years off.
774 # The announcement was made by Governor Jaques Wagner in an interview to a
775 # television station in Salvador.
776
777 # In Portuguese:
778 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
779 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
780
781 # From Guilherme Bernardes Rodrigues (2011-10-07):
782 # There is news in the media, however there is still no decree about it.
783 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
784 # official agency about time in Brazil, and she confirmed that the old rule is
785 # still in force.
786
787 # From Guilherme Bernardes Rodrigues (2011-10-14)
788 # It's official, the President signed a decree that includes Bahia in summer
789 # time.
790 # [ and in a second message (same day): ]
791 # I found the decree.
792 #
793 # DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011
794 # Link :
795 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
796
797 # From Kelley Cook (2012-10-16):
798 # The governor of state of Bahia in Brazil announced on Thursday that
799 # due to public pressure, he is reversing the DST policy they implemented
800 # last year and will not be going to Summer Time on October 21st....
801 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
802
803 # From Rodrigo Severo (2012-10-16):
804 # Tocantins state will have DST.
805 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
806
807 # From Steffen Thorsen (2013-09-20):
808 # Tocantins in Brazil is very likely not to observe DST from October....
809 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
810 # We will keep this article updated when this is confirmed:
811 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
812
813 # From Steffen Thorsen (2013-10-17):
814 # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
815 # Senator Jorge Viana announced that Acre will change time zone on November 10.
816 # He did not specify the time of the change, nor if western parts of Amazonas
817 # will change as well.
818 #
819 # From Paul Eggert (2013-10-17):
820 # For now, assume western Amazonas will change as well.
821
822 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
823 # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
824 # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
825 Rule Brazil 1931 only - Oct 3 11:00 1:00 S
826 Rule Brazil 1932 1933 - Apr 1 0:00 0 -
827 Rule Brazil 1932 only - Oct 3 0:00 1:00 S
828 # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
829 # revoked DST.
830 # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
831 # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
832 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
833 Rule Brazil 1950 only - Apr 16 1:00 0 -
834 Rule Brazil 1951 1952 - Apr 1 0:00 0 -
835 # Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)
836 Rule Brazil 1953 only - Mar 1 0:00 0 -
837 # Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30)
838 # revoked DST.
839 # Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18)
840 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00
841 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
842 # Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)
843 # extended the above decree to all of the national territory on 12-09.
844 Rule Brazil 1963 only - Dec 9 0:00 1:00 S
845 # Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)
846 # extended summer time by one day to 1964-03-01 00:00 (start of school).
847 Rule Brazil 1964 only - Mar 1 0:00 0 -
848 # Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27)
849 Rule Brazil 1965 only - Jan 31 0:00 1:00 S
850 Rule Brazil 1965 only - Mar 31 0:00 0 -
851 # Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22)
852 Rule Brazil 1965 only - Dec 1 0:00 1:00 S
853 # Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)
854 Rule Brazil 1966 1968 - Mar 1 0:00 0 -
855 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
856 # Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)
857 # revoked DST.
858 # Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27)
859 Rule Brazil 1985 only - Nov 2 0:00 1:00 S
860 # Decree 92,310 (1986-01-21)
861 # Decree 92,463 (1986-03-13)
862 Rule Brazil 1986 only - Mar 15 0:00 0 -
863 # Decree 93,316 (1986-10-01)
864 Rule Brazil 1986 only - Oct 25 0:00 1:00 S
865 Rule Brazil 1987 only - Feb 14 0:00 0 -
866 # Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22)
867 Rule Brazil 1987 only - Oct 25 0:00 1:00 S
868 Rule Brazil 1988 only - Feb 7 0:00 0 -
869 # Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)
870 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
871 Rule Brazil 1988 only - Oct 16 0:00 1:00 S
872 Rule Brazil 1989 only - Jan 29 0:00 0 -
873 # Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)
874 # with the same exceptions
875 Rule Brazil 1989 only - Oct 15 0:00 1:00 S
876 Rule Brazil 1990 only - Feb 11 0:00 0 -
877 # Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)
878 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
879 # Decree 99,629 (1990-10-19) adds BA, MT.
880 Rule Brazil 1990 only - Oct 21 0:00 1:00 S
881 Rule Brazil 1991 only - Feb 17 0:00 0 -
882 # Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)
883 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
884 Rule Brazil 1991 only - Oct 20 0:00 1:00 S
885 Rule Brazil 1992 only - Feb 9 0:00 0 -
886 # Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)
887 # adopted by same states.
888 Rule Brazil 1992 only - Oct 25 0:00 1:00 S
889 Rule Brazil 1993 only - Jan 31 0:00 0 -
890 # Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)
891 # adopted by same states, plus AM.
892 # Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22;
893 # web page corrected 2004-01-07) adopted by same states, minus AM.
894 # Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14)
895 # adopted by same states, plus MT and TO.
896 # Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)
897 # adds AL, SE.
898 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S
899 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -
900 Rule Brazil 1996 only - Feb 11 0:00 0 -
901 # Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)
902 # adopted by same states, minus AL, SE.
903 Rule Brazil 1996 only - Oct 6 0:00 1:00 S
904 Rule Brazil 1997 only - Feb 16 0:00 0 -
905 # From Daniel C. Sobral (1998-02-12):
906 # In 1997, the DS began on October 6. The stated reason was that
907 # because international television networks ignored Brazil's policy on DS,
908 # they bought the wrong times on satellite for coverage of Pope's visit.
909 # This year, the ending date of DS was postponed to March 1
910 # to help dealing with the shortages of electric power.
911 #
912 # Decree 2,317 (1997-09-04), adopted by same states.
913 Rule Brazil 1997 only - Oct 6 0:00 1:00 S
914 # Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>
915 # (1998-02-10)
916 Rule Brazil 1998 only - Mar 1 0:00 0 -
917 # Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)
918 # adopted by the same states as before.
919 Rule Brazil 1998 only - Oct 11 0:00 1:00 S
920 Rule Brazil 1999 only - Feb 21 0:00 0 -
921 # Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>
922 # (1999-08-23) adopted by same states.
923 # Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)
924 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
925 Rule Brazil 1999 only - Oct 3 0:00 1:00 S
926 Rule Brazil 2000 only - Feb 27 0:00 0 -
927 # Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)
928 # adopted by the same states as before.
929 # Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13)
930 # repeals DST in PE and RR, effective 2000-10-15 00:00.
931 # Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17)
932 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
933 # Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>
934 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
935 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S
936 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 -
937 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
938 # 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm>
939 Rule Brazil 2002 only - Nov 3 0:00 1:00 S
940 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
941 # 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm>
942 Rule Brazil 2003 only - Oct 19 0:00 1:00 S
943 # Decree 5,223 (2004-10-01) reestablishes DST in MT.
944 # 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm>
945 Rule Brazil 2004 only - Nov 2 0:00 1:00 S
946 # Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),
947 # adopted by the same states as before.
948 Rule Brazil 2005 only - Oct 16 0:00 1:00 S
949 # Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),
950 # adopted by the same states as before.
951 Rule Brazil 2006 only - Nov 5 0:00 1:00 S
952 Rule Brazil 2007 only - Feb 25 0:00 0 -
953 # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
954 # adopted by the same states as before.
955 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
956 # From Frederico A. C. Neves (2008-09-10):
957 # According to this decree
958 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
959 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
960 # 3rd Feb Sunday. There is an exception on the return date when this is
961 # the Carnival Sunday then the return date will be the next Sunday...
962 Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
963 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
964 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
965 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
966 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
967 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
968 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
969 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
970 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
971 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
972 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
973 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
974 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
975 # From Arthur David Olson (2008-09-29):
976 # The next is wrong in some years but is better than nothing.
977 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
978
979 # The latest ruleset listed above says that the following states observe DST:
980 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
981
982 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
983 #
984 # Fernando de Noronha (administratively part of PE)
985 Zone America/Noronha -2:09:40 - LMT 1914
986 -2:00 Brazil FN%sT 1990 Sep 17
987 -2:00 - FNT 1999 Sep 30
988 -2:00 Brazil FN%sT 2000 Oct 15
989 -2:00 - FNT 2001 Sep 13
990 -2:00 Brazil FN%sT 2002 Oct 1
991 -2:00 - FNT
992 # Other Atlantic islands have no permanent settlement.
993 # These include Trindade and Martim Vaz (administratively part of ES),
994 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
995 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
996 # it also included the Penedos.
997 #
998 # Amapá (AP), east Pará (PA)
999 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
1000 # The division between east and west Pará is the river Xingu.
1001 # In the north a very small part from the river Javary (now Jari I guess,
1002 # the border with Amapá) to the Amazon, then to the Xingu.
1003 Zone America/Belem -3:13:56 - LMT 1914
1004 -3:00 Brazil BR%sT 1988 Sep 12
1005 -3:00 - BRT
1006 #
1007 # west Pará (PA)
1008 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
1009 Zone America/Santarem -3:38:48 - LMT 1914
1010 -4:00 Brazil AM%sT 1988 Sep 12
1011 -4:00 - AMT 2008 Jun 24 0:00
1012 -3:00 - BRT
1013 #
1014 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
1015 # Paraíba (PB)
1016 Zone America/Fortaleza -2:34:00 - LMT 1914
1017 -3:00 Brazil BR%sT 1990 Sep 17
1018 -3:00 - BRT 1999 Sep 30
1019 -3:00 Brazil BR%sT 2000 Oct 22
1020 -3:00 - BRT 2001 Sep 13
1021 -3:00 Brazil BR%sT 2002 Oct 1
1022 -3:00 - BRT
1023 #
1024 # Pernambuco (PE) (except Atlantic islands)
1025 Zone America/Recife -2:19:36 - LMT 1914
1026 -3:00 Brazil BR%sT 1990 Sep 17
1027 -3:00 - BRT 1999 Sep 30
1028 -3:00 Brazil BR%sT 2000 Oct 15
1029 -3:00 - BRT 2001 Sep 13
1030 -3:00 Brazil BR%sT 2002 Oct 1
1031 -3:00 - BRT
1032 #
1033 # Tocantins (TO)
1034 Zone America/Araguaina -3:12:48 - LMT 1914
1035 -3:00 Brazil BR%sT 1990 Sep 17
1036 -3:00 - BRT 1995 Sep 14
1037 -3:00 Brazil BR%sT 2003 Sep 24
1038 -3:00 - BRT 2012 Oct 21
1039 -3:00 Brazil BR%sT 2013 Sep
1040 -3:00 - BRT
1041 #
1042 # Alagoas (AL), Sergipe (SE)
1043 Zone America/Maceio -2:22:52 - LMT 1914
1044 -3:00 Brazil BR%sT 1990 Sep 17
1045 -3:00 - BRT 1995 Oct 13
1046 -3:00 Brazil BR%sT 1996 Sep 4
1047 -3:00 - BRT 1999 Sep 30
1048 -3:00 Brazil BR%sT 2000 Oct 22
1049 -3:00 - BRT 2001 Sep 13
1050 -3:00 Brazil BR%sT 2002 Oct 1
1051 -3:00 - BRT
1052 #
1053 # Bahia (BA)
1054 # There are too many Salvadors elsewhere, so use America/Bahia instead
1055 # of America/Salvador.
1056 Zone America/Bahia -2:34:04 - LMT 1914
1057 -3:00 Brazil BR%sT 2003 Sep 24
1058 -3:00 - BRT 2011 Oct 16
1059 -3:00 Brazil BR%sT 2012 Oct 21
1060 -3:00 - BRT
1061 #
1062 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
1063 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
1064 # Santa Catarina (SC), Rio Grande do Sul (RS)
1065 Zone America/Sao_Paulo -3:06:28 - LMT 1914
1066 -3:00 Brazil BR%sT 1963 Oct 23 0:00
1067 -3:00 1:00 BRST 1964
1068 -3:00 Brazil BR%sT
1069 #
1070 # Mato Grosso do Sul (MS)
1071 Zone America/Campo_Grande -3:38:28 - LMT 1914
1072 -4:00 Brazil AM%sT
1073 #
1074 # Mato Grosso (MT)
1075 Zone America/Cuiaba -3:44:20 - LMT 1914
1076 -4:00 Brazil AM%sT 2003 Sep 24
1077 -4:00 - AMT 2004 Oct 1
1078 -4:00 Brazil AM%sT
1079 #
1080 # Rondônia (RO)
1081 Zone America/Porto_Velho -4:15:36 - LMT 1914
1082 -4:00 Brazil AM%sT 1988 Sep 12
1083 -4:00 - AMT
1084 #
1085 # Roraima (RR)
1086 Zone America/Boa_Vista -4:02:40 - LMT 1914
1087 -4:00 Brazil AM%sT 1988 Sep 12
1088 -4:00 - AMT 1999 Sep 30
1089 -4:00 Brazil AM%sT 2000 Oct 15
1090 -4:00 - AMT
1091 #
1092 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
1093 # The great circle line from Tabatinga to Porto Acre divides
1094 # east from west Amazonas.
1095 Zone America/Manaus -4:00:04 - LMT 1914
1096 -4:00 Brazil AM%sT 1988 Sep 12
1097 -4:00 - AMT 1993 Sep 28
1098 -4:00 Brazil AM%sT 1994 Sep 22
1099 -4:00 - AMT
1100 #
1101 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1102 # Eirunepé, Envira, Ipixuna
1103 Zone America/Eirunepe -4:39:28 - LMT 1914
1104 -5:00 Brazil AC%sT 1988 Sep 12
1105 -5:00 - ACT 1993 Sep 28
1106 -5:00 Brazil AC%sT 1994 Sep 22
1107 -5:00 - ACT 2008 Jun 24 0:00
1108 -4:00 - AMT 2013 Nov 10
1109 -5:00 - ACT
1110 #
1111 # Acre (AC)
1112 Zone America/Rio_Branco -4:31:12 - LMT 1914
1113 -5:00 Brazil AC%sT 1988 Sep 12
1114 -5:00 - ACT 2008 Jun 24 0:00
1115 -4:00 - AMT 2013 Nov 10
1116 -5:00 - ACT
1117
1118 # Chile
1119
1120 # From Paul Eggert (2015-04-03):
1121 # Shanks & Pottenger says America/Santiago introduced standard time in
1122 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1123 # was the same offset as in 1916-1919. It also says Pacific/Easter
1124 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1125 #
1126 # Dates for America/Santiago from 1910 to 2004 are primarily from
1127 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1128 # [1] Chile Law
1129 # http://www.webexhibits.org/daylightsaving/chile.html
1130 # This contains a copy of a this official table:
1131 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1132 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1133 # [1] needs several corrections, though.
1134 #
1135 # The first set of corrections is from:
1136 # [2] History of the Official Time of Chile
1137 # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
1138 # http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1139 # This is an English translation of:
1140 # Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
1141 # http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1142 # A fancier Spanish version (requiring mouse-clicking) is at:
1143 # http://www.horaoficial.cl/historia_hora.html
1144 # Conflicts between [1] and [2] were resolved as follows:
1145 #
1146 # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1147 # Boletín No. 1, Aviso No. 1 (1910). Go with [2].
1148 #
1149 # - [1] says SMT was -4:42:45, [2] says Chile's official time from
1150 # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1151 # Astronomical Observatory (OAN), then located in what is now
1152 # Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46.
1153 #
1154 # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1155 # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2].
1156 #
1157 # - [1] does not give times for transitions; assume they occur
1158 # at midnight mainland time, the current common practice. However,
1159 # go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1160 #
1161 # Another correction to [1] is from Jesper Nørgaard Welen, who
1162 # wrote (2006-10-08), "I think that there are some obvious mistakes in
1163 # the suggested link from Oscar van Vlijmen,... for instance entry 66
1164 # says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at
1165 # 1990-09-15 (they should have been 1990-09-15 and 1990-09-16
1166 # respectively), but anyhow it clears up some doubts too."
1167 #
1168 # Data for Pacific/Easter from 1910 through 1967 come from Shanks &
1169 # Pottenger. After that, for lack of better info assume
1170 # Pacific/Easter is always two hours behind America/Santiago;
1171 # this is known to work for DST transitions starting in 2008 and
1172 # may well be true for earlier transitions.
1173
1174 # From Eduardo Krell (1995-10-19):
1175 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
1176 # of October.... The law is the same for March and October.
1177 # (1998-09-29):
1178 # Because of the drought this year, the government decided to go into
1179 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1180 # (unless there's another dry season next year, I guess).
1181
1182 # From Julio I. Pacheco Troncoso (1999-03-18):
1183 # Because of the same drought, the government decided to end DST later,
1184 # on April 3, (one-time change).
1185
1186 # From Germán Poo-Caamaño (2008-03-03):
1187 # Due to drought, Chile extends Daylight Time in three weeks. This
1188 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1189 # and Saturday 3/29 at 22:00 for Pacific/Easter)
1190 # The Supreme Decree is located at
1191 # http://www.shoa.cl/servicios/supremo316.pdf
1192 #
1193 # From José Miguel Garrido (2008-03-05):
1194 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
1195
1196 # From Angel Chiang (2010-03-04):
1197 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1198 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1199 #
1200 # From Arthur David Olson (2010-03-06):
1201 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1202
1203 # From Glenn Eychaner (2011-03-28):
1204 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1205 # In English:
1206 # Chile's clocks will go back an hour this year on the 7th of May instead
1207 # of this Saturday. They will go forward again the 3rd Saturday in
1208 # August, not in October as they have since 1968.
1209
1210 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1211 # As stated in the website of the Chilean Energy Ministry
1212 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1213 # The Chilean Government has decided to postpone the entrance into winter time
1214 # (to leave DST) from March 11 2012 to April 28th 2012....
1215 # Quote from the website communication:
1216 #
1217 # 6. For the year 2012, the dates of entry into winter time will be as follows:
1218 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1219 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1220 # of the same day.
1221 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1222 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1223 # 01:00 on September 2.
1224
1225 # From Steffen Thorsen (2013-02-15):
1226 # According to several news sources, Chile has extended DST this year,
1227 # they will end DST later and start DST earlier than planned. They
1228 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1229 # start date is 2013-09-08 00:00....
1230 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1231
1232 # From José Miguel Garrido (2014-02-19):
1233 # Today appeared in the Diario Oficial a decree amending the time change
1234 # dates to 2014.
1235 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1236 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1237 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1238
1239 # From Eduardo Romero Urra (2015-03-03):
1240 # Today has been published officially that Chile will use the DST time
1241 # permanently until March 25 of 2017
1242 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1243 #
1244 # From Paul Eggert (2015-03-03):
1245 # For now, assume that the extension will persist indefinitely.
1246
1247 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1248 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
1249 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1250 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1251 Rule Chile 1969 only - Mar 30 3:00u 0 -
1252 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1253 Rule Chile 1970 only - Mar 29 3:00u 0 -
1254 Rule Chile 1971 only - Mar 14 3:00u 0 -
1255 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1256 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1257 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1258 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1259 Rule Chile 1987 only - Apr 12 3:00u 0 -
1260 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1261 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
1262 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1263 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1264 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1265 Rule Chile 1997 only - Mar 30 3:00u 0 -
1266 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1267 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1268 Rule Chile 1999 only - Apr 4 3:00u 0 -
1269 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1270 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1271 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1272 # which is used below in specifying the transition.
1273 Rule Chile 2008 only - Mar 30 3:00u 0 -
1274 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1275 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1276 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1277 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1278 Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1279 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1280 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1281 # (1996-09) says 1998-03-08. Ignore these.
1282 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1283 Zone America/Santiago -4:42:46 - LMT 1890
1284 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1285 -5:00 - CLT 1916 Jul 1 # Chile Time
1286 -4:42:46 - SMT 1918 Sep 10
1287 -4:00 - CLT 1919 Jul 1
1288 -4:42:46 - SMT 1927 Sep 1
1289 -5:00 Chile CL%sT 1932 Sep 1
1290 -4:00 - CLT 1942 Jun 1
1291 -5:00 - CLT 1942 Aug 1
1292 -4:00 - CLT 1946 Jul 15
1293 -4:00 1:00 CLST 1946 Sep 1 # central Chile
1294 -4:00 - CLT 1947 Apr 1
1295 -5:00 - CLT 1947 May 21 23:00
1296 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1297 -3:00 - CLT
1298 Zone Pacific/Easter -7:17:28 - LMT 1890
1299 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1300 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
1301 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1302 -5:00 - EAST
1303 #
1304 # Salas y Gómez Island is uninhabited.
1305 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1306 # and Antarctic bases, are like America/Santiago.
1307
1308 # Antarctic base using South American rules
1309 # (See the file 'antarctica' for more.)
1310 #
1311 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1312 #
1313 # From Ethan Dicks (1996-10-06):
1314 # It keeps the same time as Punta Arenas, Chile, because, just like us
1315 # and the South Pole, that's the other end of their supply line....
1316 # I verified with someone who was there that since 1980,
1317 # Palmer has followed Chile. Prior to that, before the Falklands War,
1318 # Palmer used to be supplied from Argentina.
1319 #
1320 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1321 Zone Antarctica/Palmer 0 - zzz 1965
1322 -4:00 Arg AR%sT 1969 Oct 5
1323 -3:00 Arg AR%sT 1982 May
1324 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1325 -3:00 - CLT
1326
1327 # Colombia
1328
1329 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1330 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1331
1332 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1333 Rule CO 1992 only - May 3 0:00 1:00 S
1334 Rule CO 1993 only - Apr 4 0:00 0 -
1335 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1336 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1337 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1338 -5:00 CO CO%sT # Colombia Time
1339 # Malpelo, Providencia, San Andres
1340 # no information; probably like America/Bogota
1341
1342 # Curaçao
1343
1344 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1345 #
1346 # From Paul Eggert (2006-03-22):
1347 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1348 # -4:00 since standard time was introduced on 1912-03-02; and that
1349 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1350 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1351 # Saba Island has been like Curaçao.
1352 # This all predates our 1970 cutoff, though.
1353 #
1354 # By July 2007 Curaçao and St Maarten are planned to become
1355 # associated states within the Netherlands, much like Aruba;
1356 # Bonaire, Saba and St Eustatius would become directly part of the
1357 # Netherlands as Kingdom Islands. This won't affect their time zones
1358 # though, as far as we know.
1359 #
1360 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1361 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1362 -4:30 - ANT 1965 # Netherlands Antilles Time
1363 -4:00 - AST
1364
1365 # From Arthur David Olson (2011-06-15):
1366 # use links for places with new iso3166 codes.
1367 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1368 # and contains an apostrophe; use "Lower_Princes" below.
1369
1370 Link America/Curacao America/Lower_Princes # Sint Maarten
1371 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1372
1373 # Ecuador
1374 #
1375 # Milne says the Central and South American Telegraph Company used -5:24:15.
1376 #
1377 # From Paul Eggert (2007-03-04):
1378 # Apparently Ecuador had a failed experiment with DST in 1992.
1379 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
1380 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
1381 # talk about "hora Sixto". Leave this alone for now, as we have no data.
1382 #
1383 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1384 Zone America/Guayaquil -5:19:20 - LMT 1890
1385 -5:14:00 - QMT 1931 # Quito Mean Time
1386 -5:00 - ECT # Ecuador Time
1387 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1388 -5:00 - ECT 1986
1389 -6:00 - GALT # Galápagos Time
1390
1391 # Falklands
1392
1393 # From Paul Eggert (2006-03-22):
1394 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1395 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1396
1397 # From Falkland Islands Government Office, London (2001-01-22)
1398 # via Jesper Nørgaard:
1399 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1400 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1401 # September. It is anticipated that the clocks will revert back at 2
1402 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1403 # Sunday 1 September.
1404
1405 # From Rives McDow (2001-02-13):
1406 #
1407 # I have communicated several times with people there, and the last
1408 # time I had communications that was helpful was in 1998. Here is
1409 # what was said then:
1410 #
1411 # "The general rule was that Stanley used daylight saving and the Camp
1412 # did not. However for various reasons many people in the Camp have
1413 # started to use daylight saving (known locally as 'Stanley Time')
1414 # There is no rule as to who uses daylight saving - it is a matter of
1415 # personal choice and so it is impossible to draw a map showing who
1416 # uses it and who does not. Any list would be out of date as soon as
1417 # it was produced. This year daylight saving ended on April 18/19th
1418 # and started again on September 12/13th. I do not know what the rule
1419 # is, but can find out if you like. We do not change at the same time
1420 # as UK or Chile."
1421 #
1422 # I did have in my notes that the rule was "Second Saturday in Sep at
1423 # 0:00 until third Saturday in Apr at 0:00". I think that this does
1424 # not agree in some cases with Shanks; is this true?
1425 #
1426 # Also, there is no mention in the list that some areas in the
1427 # Falklands do not use DST. I have found in my communications there
1428 # that these areas are on the western half of East Falkland and all of
1429 # West Falkland. Stanley is the only place that consistently observes
1430 # DST. Again, as in other places in the world, the farmers don't like
1431 # it. West Falkland is almost entirely sheep farmers.
1432 #
1433 # I know one lady there that keeps a list of which farm keeps DST and
1434 # which doesn't each year. She runs a shop in Stanley, and says that
1435 # the list changes each year. She uses it to communicate to her
1436 # customers, catching them when they are home for lunch or dinner.
1437
1438 # From Paul Eggert (2001-03-05):
1439 # For now, we'll just record the time in Stanley, since we have no
1440 # better info.
1441
1442 # From Steffen Thorsen (2011-04-01):
1443 # The Falkland Islands will not turn back clocks this winter, but stay on
1444 # daylight saving time.
1445 #
1446 # One source:
1447 # http://www.falklandnews.com/public/story.cfm?get=5914&source=3
1448 #
1449 # We have gotten this confirmed by a clerk of the legislative assembly:
1450 # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the
1451 # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3
1452 # hours) on the first Sunday of September at 0200hrs.
1453 #
1454 # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands
1455 # will not revert to local mean time, but clocks will remain on Summer
1456 # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term
1457 # change to local time following the trial period will be notified.
1458 #
1459 # From Andrew Newman (2012-02-24)
1460 # A letter from Justin McPhee, Chief Executive,
1461 # Cable & Wireless Falkland Islands (dated 2012-02-22)
1462 # states...
1463 # The current Atlantic/Stanley entry under South America expects the
1464 # clocks to go back to standard Falklands Time (FKT) on the 15th April.
1465 # The database entry states that in 2011 Stanley was staying on fixed
1466 # summer time on a trial basis only. FIG need to contact IANA and/or
1467 # the maintainers of the database to inform them we're adopting
1468 # the same policy this year and suggest recommendations for future years.
1469 #
1470 # For now we will assume permanent summer time for the Falklands
1471 # until advised differently (to apply for 2012 and beyond, after the 2011
1472 # experiment was apparently successful.)
1473 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1474 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
1475 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
1476 Rule Falk 1939 only - Oct 1 0:00 1:00 S
1477 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
1478 Rule Falk 1943 only - Jan 1 0:00 0 -
1479 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
1480 Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
1481 Rule Falk 1984 only - Sep 16 0:00 1:00 S
1482 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S
1483 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
1484 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
1485 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S
1486 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1487 Zone Atlantic/Stanley -3:51:24 - LMT 1890
1488 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
1489 -4:00 Falk FK%sT 1983 May # Falkland Is Time
1490 -3:00 Falk FK%sT 1985 Sep 15
1491 -4:00 Falk FK%sT 2010 Sep 5 2:00
1492 -3:00 - FKST
1493
1494 # French Guiana
1495 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1496 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1497 -4:00 - GFT 1967 Oct # French Guiana Time
1498 -3:00 - GFT
1499
1500 # Guyana
1501 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1502 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1503 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1504 -3:45 - GYT 1975 Jul 31 # Guyana Time
1505 -3:00 - GYT 1991
1506 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1507 -4:00 - GYT
1508
1509 # Paraguay
1510 #
1511 # From Paul Eggert (2006-03-22):
1512 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1513 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1514 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1515 #
1516 # From Waldemar Villamayor-Venialbo (2013-09-20):
1517 # No time of the day is established for the adjustment, so people normally
1518 # adjust their clocks at 0 hour of the given dates.
1519 #
1520 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1521 Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1522 Rule Para 1975 1978 - Mar 1 0:00 0 -
1523 Rule Para 1979 1991 - Apr 1 0:00 0 -
1524 Rule Para 1989 only - Oct 22 0:00 1:00 S
1525 Rule Para 1990 only - Oct 1 0:00 1:00 S
1526 Rule Para 1991 only - Oct 6 0:00 1:00 S
1527 Rule Para 1992 only - Mar 1 0:00 0 -
1528 Rule Para 1992 only - Oct 5 0:00 1:00 S
1529 Rule Para 1993 only - Mar 31 0:00 0 -
1530 Rule Para 1993 1995 - Oct 1 0:00 1:00 S
1531 Rule Para 1994 1995 - Feb lastSun 0:00 0 -
1532 Rule Para 1996 only - Mar 1 0:00 0 -
1533 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
1534 # From Steffen Thorsen (2000-10-02):
1535 # I have three independent reports that Paraguay changed to DST this Sunday
1536 # (10-01).
1537 #
1538 # Translated by Gwillim Law (2001-02-27) from
1539 # Noticias, a daily paper in Asunción, Paraguay (2000-10-01):
1540 # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm
1541 # Starting at 0:00 today, the clock will be set forward 60 minutes, in
1542 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change
1543 # system has been operating for several years. Formerly there was a separate
1544 # decree each year; the new law has the same effect, but permanently. Every
1545 # year, the time will change on the first Sunday of October; likewise, the
1546 # clock will be set back on the first Sunday of March.
1547 #
1548 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
1549 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1550 Rule Para 1997 only - Feb lastSun 0:00 0 -
1551 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1552 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1553 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
1554 # From Rives McDow (2002-02-28):
1555 # A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the
1556 # dst method to be from the first Sunday in September to the first Sunday in
1557 # April.
1558 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
1559 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
1560 #
1561 # From Jesper Nørgaard Welen (2005-01-02):
1562 # There are several sources that claim that Paraguay made
1563 # a timezone rule change in autumn 2004.
1564 # From Steffen Thorsen (2005-01-05):
1565 # Decree 1,867 (2004-03-05)
1566 # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
1567 # http://www.presidencia.gov.py/decretos/D1867.pdf
1568 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
1569 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
1570 # From Carlos Raúl Perasso (2010-02-18):
1571 # By decree number 3958 issued yesterday
1572 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1573 # Paraguay changes its DST schedule, postponing the March rule to April and
1574 # modifying the October date. The decree reads:
1575 # ...
1576 # Art. 1. It is hereby established that from the second Sunday of the month of
1577 # April of this year (2010), the official time is to be set back 60 minutes,
1578 # and that on the first Sunday of the month of October, it is to be set
1579 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1580 # ...
1581 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
1582 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1583 #
1584 # From Steffen Thorsen (2013-03-07):
1585 # Paraguay will end DST on 2013-03-24 00:00....
1586 # http://www.ande.gov.py/interna.php?id=1075
1587 #
1588 # From Carlos Raúl Perasso (2013-03-15):
1589 # The change in Paraguay is now final. Decree number 10780
1590 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1591 # From Carlos Raúl Perasso (2014-02-28):
1592 # Decree 1264 can be found at:
1593 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1594 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1595
1596 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1597 Zone America/Asuncion -3:50:40 - LMT 1890
1598 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1599 -4:00 - PYT 1972 Oct # Paraguay Time
1600 -3:00 - PYT 1974 Apr
1601 -4:00 Para PY%sT
1602
1603 # Peru
1604 #
1605 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1606 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1607 # When we were in Peru in 1985-1986, they apparently switched over
1608 # sometime between December 29 and January 3 while we were on the Amazon.
1609 #
1610 # From Paul Eggert (2006-03-22):
1611 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1612
1613 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1614 Rule Peru 1938 only - Jan 1 0:00 1:00 S
1615 Rule Peru 1938 only - Apr 1 0:00 0 -
1616 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
1617 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1618 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
1619 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1620 Rule Peru 1990 only - Jan 1 0:00 1:00 S
1621 Rule Peru 1990 only - Apr 1 0:00 0 -
1622 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1623 Rule Peru 1994 only - Jan 1 0:00 1:00 S
1624 Rule Peru 1994 only - Apr 1 0:00 0 -
1625 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1626 Zone America/Lima -5:08:12 - LMT 1890
1627 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
1628 -5:00 Peru PE%sT # Peru Time
1629
1630 # South Georgia
1631 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1632 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
1633 -2:00 - GST # South Georgia Time
1634
1635 # South Sandwich Is
1636 # uninhabited; scientific personnel have wintered
1637
1638 # Suriname
1639 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1640 Zone America/Paramaribo -3:40:40 - LMT 1911
1641 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1642 -3:40:36 - PMT 1945 Oct # The capital moved?
1643 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1644 -3:30 - SRT 1984 Oct # Suriname Time
1645 -3:00 - SRT
1646
1647 # Trinidad and Tobago
1648 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1649 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1650 -4:00 - AST
1651
1652 # These all agree with Trinidad and Tobago since 1970.
1653 Link America/Port_of_Spain America/Anguilla
1654 Link America/Port_of_Spain America/Antigua
1655 Link America/Port_of_Spain America/Dominica
1656 Link America/Port_of_Spain America/Grenada
1657 Link America/Port_of_Spain America/Guadeloupe
1658 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1659 Link America/Port_of_Spain America/Montserrat
1660 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1661 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1662 Link America/Port_of_Spain America/St_Lucia
1663 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1664 Link America/Port_of_Spain America/St_Vincent
1665 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1666
1667 # Uruguay
1668 # From Paul Eggert (1993-11-18):
1669 # Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1670 # From Shanks & Pottenger:
1671 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1672 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1673 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1674 Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1675 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
1676 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
1677 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1678 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
1679 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
1680 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
1681 # Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
1682 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS
1683 # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
1684 # and 1943 Apr 13 "to present time"; go with Shanks & Pottenger.
1685 Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS
1686 Rule Uruguay 1942 only - Jan 1 0:00 0 -
1687 Rule Uruguay 1942 only - Dec 14 0:00 1:00 S
1688 Rule Uruguay 1943 only - Mar 14 0:00 0 -
1689 Rule Uruguay 1959 only - May 24 0:00 1:00 S
1690 Rule Uruguay 1959 only - Nov 15 0:00 0 -
1691 Rule Uruguay 1960 only - Jan 17 0:00 1:00 S
1692 Rule Uruguay 1960 only - Mar 6 0:00 0 -
1693 Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S
1694 Rule Uruguay 1965 only - Sep 26 0:00 0 -
1695 Rule Uruguay 1966 1967 - Oct 31 0:00 0 -
1696 Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS
1697 Rule Uruguay 1968 1970 - Dec 2 0:00 0 -
1698 Rule Uruguay 1972 only - Apr 24 0:00 1:00 S
1699 Rule Uruguay 1972 only - Aug 15 0:00 0 -
1700 Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS
1701 Rule Uruguay 1974 only - Dec 22 0:00 1:00 S
1702 Rule Uruguay 1976 only - Oct 1 0:00 0 -
1703 Rule Uruguay 1977 only - Dec 4 0:00 1:00 S
1704 Rule Uruguay 1978 only - Apr 1 0:00 0 -
1705 Rule Uruguay 1979 only - Oct 1 0:00 1:00 S
1706 Rule Uruguay 1980 only - May 1 0:00 0 -
1707 Rule Uruguay 1987 only - Dec 14 0:00 1:00 S
1708 Rule Uruguay 1988 only - Mar 14 0:00 0 -
1709 Rule Uruguay 1988 only - Dec 11 0:00 1:00 S
1710 Rule Uruguay 1989 only - Mar 12 0:00 0 -
1711 Rule Uruguay 1989 only - Oct 29 0:00 1:00 S
1712 # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2,
1713 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA.
1714 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
1715 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
1716 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
1717 Rule Uruguay 1993 only - Feb 28 0:00 0 -
1718 # From Eduardo Cota (2004-09-20):
1719 # The Uruguayan government has decreed a change in the local time....
1720 # http://www.presidencia.gub.uy/decretos/2004091502.htm
1721 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
1722 # From Steffen Thorsen (2005-03-11):
1723 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1724 # save energy ... it was postponed two weeks....
1725 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1726 Rule Uruguay 2005 only - Mar 27 2:00 0 -
1727 # From Eduardo Cota (2005-09-27):
1728 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1729 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1730 # 02:00 local time, official time in Uruguay will be at GMT -2.
1731 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1732 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1733 # From Jesper Nørgaard Welen (2006-09-06):
1734 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1735 #
1736 # From Steffen Thorsen (2015-06-30):
1737 # ... it looks like they will not be using DST the coming summer:
1738 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
1739 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
1740 # From Paul Eggert (2015-06-30):
1741 # Apparently restaurateurs complained that DST caused people to go to the beach
1742 # instead of out to dinner.
1743 # From Pablo Camargo (2015-07-13):
1744 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
1745 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
1746 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
1747 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
1748 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1749 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1750 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1751 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1752 -3:00 Uruguay UY%sT
1753
1754 # Venezuela
1755 #
1756 # From Paul Eggert (2015-07-28):
1757 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1758 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1759 #
1760 # From John Stainforth (2007-11-28):
1761 # ... the change for Venezuela originally expected for 2007-12-31 has
1762 # been brought forward to 2007-12-09. The official announcement was
1763 # published today in the "Gaceta Oficial de la República Bolivariana
1764 # de Venezuela, número 38.819" (official document for all laws or
1765 # resolution publication)
1766 # http://www.globovision.com/news.php?nid=72208
1767
1768 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1769 Zone America/Caracas -4:27:44 - LMT 1890
1770 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1771 -4:30 - VET 1965 Jan 1 0:00 # Venezuela T.
1772 -4:00 - VET 2007 Dec 9 3:00
1773 -4:30 - VET