283 # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
284 # Vermont, Virginia, West Virginia
285
286 # From Dave Cantor (2004-11-02):
287 # Early this summer I had the occasion to visit the Mount Washington
288 # Observatory weather station atop (of course!) Mount Washington [, NH]....
289 # One of the staff members said that the station was on Eastern Standard Time
290 # and didn't change their clocks for Daylight Saving ... so that their
291 # reports will always have times which are 5 hours behind UTC.
292
293 # From Paul Eggert (2005-08-26):
294 # According to today's Huntsville Times
295 # http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1
296 # a few towns on Alabama's "eastern border with Georgia, such as Phenix City
297 # in Russell County, Lanett in Chambers County and some towns in Lee County,
298 # set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
299 # Roberts, city administrator in Phenix City. as saying "We are in the Central
300 # time zone, but we do go by the Eastern time zone because so many people work
301 # in Columbus."
302
303 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
304 Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
305 Rule NYC 1920 only - Oct lastSun 2:00 0 S
306 Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
307 Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
308 Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
309 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
310 Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
311 -5:00 US E%sT 1920
312 -5:00 NYC E%sT 1942
313 -5:00 US E%sT 1946
314 -5:00 NYC E%sT 1967
315 -5:00 US E%sT
316
317 # US central time, represented by Chicago
318
319 # Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
320 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
321 # Washington counties), Illinois, western Indiana
322 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
1101 # P.E.I. will follow US rules....
1102 # http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf
1103 # ...
1104 # Province of Newfoundland and Labrador....
1105 # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
1106 # ...
1107 # Yukon
1108 # http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
1109 # ...
1110 # N.W.T. will follow US rules. Whoever maintains the government web site
1111 # does not seem to believe in bookmarks. To see the news release, click the
1112 # following link and search for "Daylight Savings Time Change". Press the
1113 # "Daylight Savings Time Change" link; it will fire off a popup using
1114 # JavaScript.
1115 # http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive
1116 # ...
1117 # Nunavut
1118 # An amendment to the Interpretation Act was registered on February 19/2007....
1119 # http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
1120
1121 # From Paul Eggert (2006-04-25):
1122 # H. David Matthews and Mary Vincent's map
1123 # "It's about TIME", _Canadian Geographic_ (September-October 1998)
1124 # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
1125 # contains detailed boundaries for regions observing nonstandard
1126 # time and daylight saving time arrangements in Canada circa 1998.
1127 #
1128 # INMS, the Institute for National Measurement Standards in Ottawa, has
1129 # information about standard and daylight saving time zones in Canada.
1130 # http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php
1131 # (updated periodically).
1132 # Its unofficial information is often taken from Matthews and Vincent.
1133
1134 # From Paul Eggert (2006-06-27):
1135 # For now, assume all of DST-observing Canada will fall into line with the
1136 # new US DST rules,
1137
1138 # From Chris Walton (2011-12-01)
1139 # In the first of Tammy Hardwick's articles
1140 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1141 # she quotes the Friday November 1/1918 edition of the Creston Review.
1142 # The quote includes these two statements:
1143 # 'Sunday the CPR went back to the old system of time...'
1144 # '... The daylight saving scheme was dropped all over Canada at the same time,'
1145 # These statements refer to a transition from daylight time to standard time
1146 # that occurred nationally on Sunday October 27/1918. This transition was
1147 # also documented in the Saturday October 26/1918 edition of the Toronto Star.
1148
1149 # In light of that evidence, we alter the date from the earlier believed
1150 # Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
1151 # than Thursday) in all Canadian rulesets.
1976 # mountain time, which they had used before the advent of Nunavut's
1977 # unified time zone in 1999.
1978 #
1979 # From Rives McDow (2001-01-20), quoting the Nunavut government:
1980 # The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
1981
1982 # From Paul Eggert (2000-12-04):
1983 # Let's just keep track of the official times for now.
1984
1985 # From Rives McDow (2001-03-07):
1986 # The premier of Nunavut has issued a ministerial statement advising
1987 # that effective 2001-04-01, the territory of Nunavut will revert
1988 # back to three time zones (mountain, central, and eastern). Of the
1989 # cities in Nunavut, Coral Harbor is the only one that I know of that
1990 # has said it will not observe dst, staying on EST year round. I'm
1991 # checking for more info, and will get back to you if I come up with
1992 # more.
1993 # [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
1994
1995 # From Gwillim Law (2005-05-21):
1996 # According to maps at
1997 # http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg
1998 # http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg
1999 # (both dated 2003), and
2000 # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
2001 # (from a 1998 Canadian Geographic article), the de facto and de jure time
2002 # for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
2003 # round. Using Google, it's easy to find other websites that confirm this.
2004 # I wasn't able to find how far back this time regimen goes, but since it
2005 # predates the creation of Nunavut, it probably goes back many years....
2006 # The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
2007 #
2008 # From Paul Eggert (2005-07-26):
2009 # For lack of better information, assume that Southampton Island observed
2010 # daylight saving only during wartime.
2011
2012 # From Chris Walton (2007-03-01):
2013 # ... the community of Resolute (located on Cornwallis Island in
2014 # Nunavut) moved from Central Time to Eastern Time last November.
2015 # Basically the community did not change its clocks at the end of
2016 # daylight saving....
2017 # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html
2018
2019 # From Chris Walton (2011-03-21):
2020 # Back in 2007 I initiated the creation of a new "zone file" for Resolute
2021 # Bay. Resolute Bay is a small community located about 900km north of
2022 # the Arctic Circle. The zone file was required because Resolute Bay had
2023 # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007.
2024 #
2025 # According to new information which I received last week, Resolute Bay
2026 # went back to using UTC-6 in the winter of 2007-2008...
2027 #
2028 # On March 11/2007 most of Canada went onto daylight saving. On March
2029 # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I
2030 # talked to somebody that was both knowledgeable and helpful. I was able
2991
2992 # From Steffen Thorsen (2007-03-30):
2993 # http://www.laprensahn.com/pais_nota.php?id04962=7386
2994 # So it seems that Honduras will not enter DST this year....
2995
2996 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2997 Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
2998 Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
2999 Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
3000 Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
3001 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3002 Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
3003 -6:00 Hond C%sT
3004 #
3005 # Great Swan I ceded by US to Honduras in 1972
3006
3007 # Jamaica
3008 # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
3009 # unspecified official document, and says "This time is used throughout the
3010 # island". Go with Milne. Round to the nearest second as required by zic.
3011 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3012 Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
3013 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
3014 -5:00 - EST 1974 Apr 28 2:00
3015 -5:00 US E%sT 1984
3016 -5:00 - EST
3017
3018 # Martinique
3019 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3020 Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
3021 -4:04:20 - FFMT 1911 May # Fort-de-France MT
3022 -4:00 - AST 1980 Apr 6
3023 -4:00 1:00 ADT 1980 Sep 28
3024 -4:00 - AST
3025
3026 # Montserrat
3027 # See America/Port_of_Spain.
3028
3029 # Nicaragua
3030 #
3031 # This uses Shanks & Pottenger for times before 2005.
3032 #
3033 # From Steffen Thorsen (2005-04-12):
3034 # I've got reports from 8 different people that Nicaragua just started
|
283 # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
284 # Vermont, Virginia, West Virginia
285
286 # From Dave Cantor (2004-11-02):
287 # Early this summer I had the occasion to visit the Mount Washington
288 # Observatory weather station atop (of course!) Mount Washington [, NH]....
289 # One of the staff members said that the station was on Eastern Standard Time
290 # and didn't change their clocks for Daylight Saving ... so that their
291 # reports will always have times which are 5 hours behind UTC.
292
293 # From Paul Eggert (2005-08-26):
294 # According to today's Huntsville Times
295 # http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1
296 # a few towns on Alabama's "eastern border with Georgia, such as Phenix City
297 # in Russell County, Lanett in Chambers County and some towns in Lee County,
298 # set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
299 # Roberts, city administrator in Phenix City. as saying "We are in the Central
300 # time zone, but we do go by the Eastern time zone because so many people work
301 # in Columbus."
302
303 # From Paul Eggert (2014-09-06):
304 # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
305 # says that New York City Hall time was 3 minutes 58.4 seconds fast of
306 # Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the
307 # nearest second.
308
309 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
310 Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
311 Rule NYC 1920 only - Oct lastSun 2:00 0 S
312 Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
313 Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
314 Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
315 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
316 Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
317 -5:00 US E%sT 1920
318 -5:00 NYC E%sT 1942
319 -5:00 US E%sT 1946
320 -5:00 NYC E%sT 1967
321 -5:00 US E%sT
322
323 # US central time, represented by Chicago
324
325 # Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
326 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
327 # Washington counties), Illinois, western Indiana
328 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
1107 # P.E.I. will follow US rules....
1108 # http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf
1109 # ...
1110 # Province of Newfoundland and Labrador....
1111 # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
1112 # ...
1113 # Yukon
1114 # http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
1115 # ...
1116 # N.W.T. will follow US rules. Whoever maintains the government web site
1117 # does not seem to believe in bookmarks. To see the news release, click the
1118 # following link and search for "Daylight Savings Time Change". Press the
1119 # "Daylight Savings Time Change" link; it will fire off a popup using
1120 # JavaScript.
1121 # http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive
1122 # ...
1123 # Nunavut
1124 # An amendment to the Interpretation Act was registered on February 19/2007....
1125 # http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
1126
1127 # From Paul Eggert (2014-10-18):
1128 # H. David Matthews and Mary Vincent's map
1129 # "It's about TIME", _Canadian Geographic_ (September-October 1998)
1130 # http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp
1131 # contains detailed boundaries for regions observing nonstandard
1132 # time and daylight saving time arrangements in Canada circa 1998.
1133 #
1134 # National Research Council Canada maintains info about time zones and DST.
1135 # http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
1136 # http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
1137 # Its unofficial information is often taken from Matthews and Vincent.
1138
1139 # From Paul Eggert (2006-06-27):
1140 # For now, assume all of DST-observing Canada will fall into line with the
1141 # new US DST rules,
1142
1143 # From Chris Walton (2011-12-01)
1144 # In the first of Tammy Hardwick's articles
1145 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1146 # she quotes the Friday November 1/1918 edition of the Creston Review.
1147 # The quote includes these two statements:
1148 # 'Sunday the CPR went back to the old system of time...'
1149 # '... The daylight saving scheme was dropped all over Canada at the same time,'
1150 # These statements refer to a transition from daylight time to standard time
1151 # that occurred nationally on Sunday October 27/1918. This transition was
1152 # also documented in the Saturday October 26/1918 edition of the Toronto Star.
1153
1154 # In light of that evidence, we alter the date from the earlier believed
1155 # Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
1156 # than Thursday) in all Canadian rulesets.
1981 # mountain time, which they had used before the advent of Nunavut's
1982 # unified time zone in 1999.
1983 #
1984 # From Rives McDow (2001-01-20), quoting the Nunavut government:
1985 # The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
1986
1987 # From Paul Eggert (2000-12-04):
1988 # Let's just keep track of the official times for now.
1989
1990 # From Rives McDow (2001-03-07):
1991 # The premier of Nunavut has issued a ministerial statement advising
1992 # that effective 2001-04-01, the territory of Nunavut will revert
1993 # back to three time zones (mountain, central, and eastern). Of the
1994 # cities in Nunavut, Coral Harbor is the only one that I know of that
1995 # has said it will not observe dst, staying on EST year round. I'm
1996 # checking for more info, and will get back to you if I come up with
1997 # more.
1998 # [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
1999
2000 # From Gwillim Law (2005-05-21):
2001 # According to ...
2002 # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
2003 # (from a 1998 Canadian Geographic article), the de facto and de jure time
2004 # for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
2005 # round. Using Google, it's easy to find other websites that confirm this.
2006 # I wasn't able to find how far back this time regimen goes, but since it
2007 # predates the creation of Nunavut, it probably goes back many years....
2008 # The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
2009 #
2010 # From Paul Eggert (2014-10-17):
2011 # For lack of better information, assume that Southampton Island observed
2012 # daylight saving only during wartime. Gwillim Law's email also
2013 # mentioned maps now maintained by National Research Council Canada;
2014 # see above for an up-to-date link.
2015
2016 # From Chris Walton (2007-03-01):
2017 # ... the community of Resolute (located on Cornwallis Island in
2018 # Nunavut) moved from Central Time to Eastern Time last November.
2019 # Basically the community did not change its clocks at the end of
2020 # daylight saving....
2021 # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html
2022
2023 # From Chris Walton (2011-03-21):
2024 # Back in 2007 I initiated the creation of a new "zone file" for Resolute
2025 # Bay. Resolute Bay is a small community located about 900km north of
2026 # the Arctic Circle. The zone file was required because Resolute Bay had
2027 # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007.
2028 #
2029 # According to new information which I received last week, Resolute Bay
2030 # went back to using UTC-6 in the winter of 2007-2008...
2031 #
2032 # On March 11/2007 most of Canada went onto daylight saving. On March
2033 # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I
2034 # talked to somebody that was both knowledgeable and helpful. I was able
2995
2996 # From Steffen Thorsen (2007-03-30):
2997 # http://www.laprensahn.com/pais_nota.php?id04962=7386
2998 # So it seems that Honduras will not enter DST this year....
2999
3000 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3001 Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
3002 Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
3003 Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
3004 Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
3005 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3006 Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
3007 -6:00 Hond C%sT
3008 #
3009 # Great Swan I ceded by US to Honduras in 1972
3010
3011 # Jamaica
3012 # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
3013 # unspecified official document, and says "This time is used throughout the
3014 # island". Go with Milne. Round to the nearest second as required by zic.
3015 #
3016 # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but
3017 # Lance Neita writes that Prime Minister Michael Manley decreed it January 5.
3018 # Assume Neita meant Jan 6 02:00, the same as the US. Neita also writes that
3019 # Manley's supporters associated this act with Manley's nickname "Joshua"
3020 # (recall that in the Bible the sun stood still at Joshua's request),
3021 # and with the Rod of Correction which Manley said he had received from
3022 # Haile Selassie, Emperor of Ethiopia. See:
3023 # Neita L. The politician in all of us. Jamaica Observer 2014-09-20
3024 # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
3025 #
3026 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3027 Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
3028 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
3029 -5:00 - EST 1974
3030 -5:00 US E%sT 1984
3031 -5:00 - EST
3032
3033 # Martinique
3034 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3035 Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
3036 -4:04:20 - FFMT 1911 May # Fort-de-France MT
3037 -4:00 - AST 1980 Apr 6
3038 -4:00 1:00 ADT 1980 Sep 28
3039 -4:00 - AST
3040
3041 # Montserrat
3042 # See America/Port_of_Spain.
3043
3044 # Nicaragua
3045 #
3046 # This uses Shanks & Pottenger for times before 2005.
3047 #
3048 # From Steffen Thorsen (2005-04-12):
3049 # I've got reports from 8 different people that Nicaragua just started
|