Difference between revisions of "Template:Daylight saving active/doc/extended"

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imported>Thayts
(Only time zones with DST are relevant on this page)
imported>Thayts
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==HAT, AKT, PT, MT, CT, ET, AT, NT==
 
==HAT, AKT, PT, MT, CT, ET, AT, NT==
 
* DST begins on the '''second Sunday in March''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in November''' at '''2 a.m. local daylight saving time''' ([http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/daylight-time][http://www.gnb.ca/0062/acts/acts/t-06.htm][http://www.assembly.nl.ca/legislation/sr/statutes/s23.htm]).
 
* DST begins on the '''second Sunday in March''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in November''' at '''2 a.m. local daylight saving time''' ([http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/daylight-time][http://www.gnb.ca/0062/acts/acts/t-06.htm][http://www.assembly.nl.ca/legislation/sr/statutes/s23.htm]).
* The used formulas to calculate the dates can be found at [http://www.webexhibits.org/daylightsaving/i.html].
 
** They are valid through 2099.
 
** Note that the remainders of divisions are discarded (the number should be rounded down to the nearest integer that does not exceed the outcome).<br/>The remainder is automatically discarded by the <code>mod</code> operator.
 
 
* 2 a.m. HAST, AKST, PST, MST, CST, EST, AST and NST is 12:00, 11:00, 10:00, 9:00, 8:00, 7:00, 6:00 and 5:30 UTC respectively.
 
* 2 a.m. HAST, AKST, PST, MST, CST, EST, AST and NST is 12:00, 11:00, 10:00, 9:00, 8:00, 7:00, 6:00 and 5:30 UTC respectively.
 
* 2 a.m. HADT, AKDT, PDT, MDT, CDT, EDT, ADT and NDT is 11:00, 10:00, 9:00, 8:00, 7:00, 6:00, 5:00 and 4:30 UTC respectively.
 
* 2 a.m. HADT, AKDT, PDT, MDT, CDT, EDT, ADT and NDT is 11:00, 10:00, 9:00, 8:00, 7:00, 6:00, 5:00 and 4:30 UTC respectively.
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==WET, CET, EET==
 
==WET, CET, EET==
 
* DST begins on the '''last Sunday in March''' at '''1:00 UTC''' and ends on the '''last Sunday in October''' at '''1:00 UTC''' ([http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:NOT]).
 
* DST begins on the '''last Sunday in March''' at '''1:00 UTC''' and ends on the '''last Sunday in October''' at '''1:00 UTC''' ([http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:NOT]).
* The used formulas to calculate the dates can be found at [http://www.webexhibits.org/daylightsaving/i.html].
 
** They are valid through 2099.
 
** Note that the remainders of divisions are discarded (the number should be rounded down to the nearest integer that does not exceed the outcome).<br/>The remainder is automatically discarded by the <code>mod</code> operator.
 
  
 
==ACT, AET==
 
==ACT, AET==
 
* DST begins on the '''first Sunday in October''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in April''' at '''3 a.m. local daylight saving time''' ([http://www.legislation.sa.gov.au/LZ/C/R/Daylight%20Saving%20Regulations%202009.aspx][http://www.legislation.act.gov.au/a/1972-34/default.asp][http://www.worldtimezone.com/dst_news/dst_news_australia00.html]).
 
* DST begins on the '''first Sunday in October''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in April''' at '''3 a.m. local daylight saving time''' ([http://www.legislation.sa.gov.au/LZ/C/R/Daylight%20Saving%20Regulations%202009.aspx][http://www.legislation.act.gov.au/a/1972-34/default.asp][http://www.worldtimezone.com/dst_news/dst_news_australia00.html]).
* The used formulas to calculate the dates have been derived from the formulas at [http://www.webexhibits.org/daylightsaving/i.html].
 
** They are valid through 2099.
 
** Note that the remainders of divisions are discarded (the number should be rounded down to the nearest integer that does not exceed the outcome).<br/>The remainder is automatically discarded by the <code>mod</code> operator.
 
* Since at 2 a.m. local time it is still the previous day at UTC time, 10 hours are added to the dates to get the correct local date at the time of DST transition.
 
** This is not necessary for the year, since the year does not change in the months where DST begins and ends.
 
 
* 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.
 
* 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.
 
* 3 a.m. ACDT and AEDT is 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.
 
* 3 a.m. ACDT and AEDT is 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.
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==NZT==
 
==NZT==
 
* DST begins on the '''last Sunday in September''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in April''' at '''3 a.m. local daylight saving time''' ([http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Index?OpenDocument]).
 
* DST begins on the '''last Sunday in September''' at '''2 a.m. local standard time''' and ends on the '''first Sunday in April''' at '''3 a.m. local daylight saving time''' ([http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Index?OpenDocument]).
* The used formulas to calculate the dates have been derived from the formulas at [http://www.webexhibits.org/daylightsaving/i.html].
 
** They are valid through 2099.
 
** Note that the remainders of divisions are discarded (the number should be rounded down to the nearest integer that does not exceed the outcome).<br/>The remainder is automatically discarded by the <code>mod</code> operator.
 
* Since at 2 a.m. local time it is still the previous day at UTC time, 12 hours are added to the dates to get the correct local date at the time of DST transition.
 
** This is not necessary for the year, since the year does not change in the months where DST begins and ends.
 
 
* 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.
 
* 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.
 
* 3 a.m. NZDT is 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.
 
* 3 a.m. NZDT is 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.
 
}}
 
}}

Revision as of 22:37, 6 April 2018

Template-info.png Template technical documentation

HAT, AKT, PT, MT, CT, ET, AT, NT

  • DST begins on the second Sunday in March at 2 a.m. local standard time and ends on the first Sunday in November at 2 a.m. local daylight saving time ([1][2][3]).
  • 2 a.m. HAST, AKST, PST, MST, CST, EST, AST and NST is 12:00, 11:00, 10:00, 9:00, 8:00, 7:00, 6:00 and 5:30 UTC respectively.
  • 2 a.m. HADT, AKDT, PDT, MDT, CDT, EDT, ADT and NDT is 11:00, 10:00, 9:00, 8:00, 7:00, 6:00, 5:00 and 4:30 UTC respectively.

WET, CET, EET

  • DST begins on the last Sunday in March at 1:00 UTC and ends on the last Sunday in October at 1:00 UTC ([4]).

ACT, AET

  • DST begins on the first Sunday in October at 2 a.m. local standard time and ends on the first Sunday in April at 3 a.m. local daylight saving time ([5][6][7]).
  • 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.
  • 3 a.m. ACDT and AEDT is 2 a.m. ACST and AEST is 16:30 and 16:00 UTC (previous day) respectively, thus a difference of 9:30 and 10:00 hours respectively.

NZT

  • DST begins on the last Sunday in September at 2 a.m. local standard time and ends on the first Sunday in April at 3 a.m. local daylight saving time ([8]).
  • 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.
  • 3 a.m. NZDT is 2 a.m. NZST is 14:00 UTC (previous day), thus a difference of 12:00 hours.