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| rfc:datetime_and_daylight_saving_time [2011/10/10 18:24] – add examples from derick, tweak some wording danielc | rfc:datetime_and_daylight_saving_time [2017/09/22 13:28] (current) – external edit 127.0.0.1 |
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| ====== Request for Comments: DateTime and Daylight Saving Time Transitions ====== | ====== Request for Comments: DateTime and Daylight Saving Time Transitions ====== |
| * Version: 0.5 | * Version: 1.0 |
| * Date: 2011-10-10 | * Date: 2011-10-18 |
| * Author: Daniel Convissor <danielc@php.net> with feedback from Derick Rethans <derick@php.net> | * Author: Daniel Convissor <danielc@php.net> with feedback from Derick Rethans <derick@php.net> |
| * Status: Draft | * Status: Accepted ([[rfc:datetime_and_daylight_saving_time:vote|voting results]]) |
| * First Published at: https://wiki.php.net/rfc/datetime_and_daylight_saving_time | * First Published at: https://wiki.php.net/rfc/datetime_and_daylight_saving_time |
| |
| 1:00 am, repeating the hour of 1 am. | 1:00 am, repeating the hour of 1 am. |
| |
| Other time zones use different transition quantities and times. | Other time zone changes have different lengths of time and take effect |
| | at different days/times. |
| |
| |
| |
| Reminder: the time zone in the examples is ''America/New_York''. | Reminder: the time zone in the examples is ''America/New_York''. |
| So "(ST)" represents Eastern Standard Time/EST/-0500 and "(DT)" represents Eastern Daylight Time/EDT/-0400. | So "(ST)" represents Eastern Standard Time/EST/-0500 and "(DT)" |
| | represents Eastern Daylight Time/EDT/-0400. |
| |
| The behaviors indicated here are covered by unit tests in ''ext/date/tests'': | The behaviors indicated here are covered by unit tests in ''ext/date/tests'': |
| * xxxx.phpt | * rfc-datetime_and_daylight_saving_time-type1.phpt |
| * yyyy.phpt | * rfc-datetime_and_daylight_saving_time-type2.phpt |
| * zzzz.phpt | * rfc-datetime_and_daylight_saving_time-type3.phpt |
| |
| Each output line in the test files is prefixed with an identifier | Each output line in the test files is prefixed with an identifier |
| that corresponds to the ''phpt'' columns in the tables below. | that corresponds to the ''phpt'' columns in the tables below. |
| |
| Actual results for Zone Types 1 and 2 are shown as ''N/A'' for the moment | Actual results for Zone Types 1 and 2 are shown as ''N/A'' for the moment. |
| because results are tainted by | All Zone Type 1 tests pass. Zone Type 2 results are tainted by |
| [[https://bugs.php.net/bug.php?id=55253|Bug 55253]]. | [[https://bugs.php.net/bug.php?id=55253|Bug 55253]]. |
| |
| | ''2010-11-07T01:30:00''//(DT)// | PT21H | ''2010-11-06T04:30:00''//(DT)// | bs6 | | | | ''2010-11-07T01:30:00''//(DT)// | PT21H | ''2010-11-06T04:30:00''//(DT)// | bs6 | | |
| | ''2010-11-07T01:30:00''//(DT)// | P1D | ''2010-11-06T01:30:00''//(DT)// | bs7 | | | | ''2010-11-07T01:30:00''//(DT)// | P1D | ''2010-11-06T01:30:00''//(DT)// | bs7 | | |
| | ''2010-11-07T01:30:00''//(ST)// | P1DT1H | ''2010-11-06T01:30:00''//(DT)// | bs8 | ''2010-11-06T00:30:00''//(DT)// | | | ''2010-11-07T01:30:00''//(ST)// | P1DT1H | ''2010-11-06T00:30:00''//(DT)// | bs8 | | |
| | ''2010-11-07T03:30:00''//(ST)// | P1D | ''2010-11-06T03:30:00''//(DT)// | bs9 | | | | ''2010-11-07T03:30:00''//(ST)// | P1D | ''2010-11-06T03:30:00''//(DT)// | bs9 | | |
| | ''2010-11-07T02:30:00''//(ST)// | P1D | ''2010-11-06T02:30:00''//(DT)// | bs10 | | | | ''2010-11-07T02:30:00''//(ST)// | P1D | ''2010-11-06T02:30:00''//(DT)// | bs10 | | |
| | ''2010-11-07T04:30:00''//(ST)// | P1D | ''2010-11-06T04:30:00''//(ST)// | bs2 | N/A | | | ''2010-11-07T04:30:00''//(ST)// | P1D | ''2010-11-06T04:30:00''//(ST)// | bs2 | N/A | |
| | ''2010-11-07T03:30:00''//(ST)// | PT24H | ''2010-11-06T03:30:00''//(ST)// | bs3 | N/A | | | ''2010-11-07T03:30:00''//(ST)// | PT24H | ''2010-11-06T03:30:00''//(ST)// | bs3 | N/A | |
| | ''2010-11-07T02:30:00''//(ST)// | PT23H | ''2010-11-06T04:30:00''//(ST)// | bs4 | N/A | | | ''2010-11-07T02:30:00''//(ST)// | PT23H | ''2010-11-06T03:30:00''//(ST)// | bs4 | N/A | |
| | ''2010-11-07T01:30:00''//(ST)// | PT22H | ''2010-11-06T04:30:00''//(ST)// | bs5 | N/A | | | ''2010-11-07T01:30:00''//(ST)// | PT22H | ''2010-11-06T03:30:00''//(ST)// | bs5 | N/A | |
| | ''2010-11-07T01:30:00''//(DT)// | PT21H | ''2010-11-06T04:30:00''//(DT)// | bs6 | N/A | | | ''2010-11-07T01:30:00''//(DT)// | PT21H | ''2010-11-06T04:30:00''//(DT)// | bs6 | N/A | |
| | ''2010-11-07T01:30:00''//(DT)// | P1D | ''2010-11-06T01:30:00''//(DT)// | bs7 | N/A | | | ''2010-11-07T01:30:00''//(DT)// | P1D | ''2010-11-06T01:30:00''//(DT)// | bs7 | N/A | |
| | ''2010-11-07T01:30:00''//(ST)// | P1DT1H | ''2010-11-06T01:30:00''//(ST)// | bs8 | N/A | | | ''2010-11-07T01:30:00''//(ST)// | P1DT1H | ''2010-11-06T00:30:00''//(ST)// | bs8 | N/A | |
| | ''2010-11-07T03:30:00''//(ST)// | P1D | ''2010-11-06T03:30:00''//(ST)// | bs9 | N/A | | | ''2010-11-07T03:30:00''//(ST)// | P1D | ''2010-11-06T03:30:00''//(ST)// | bs9 | N/A | |
| | ''2010-11-07T02:30:00''//(ST)// | P1D | ''2010-11-06T02:30:00''//(ST)// | bs10 | N/A | | | ''2010-11-07T02:30:00''//(ST)// | P1D | ''2010-11-06T02:30:00''//(ST)// | bs10 | N/A | |
| |
| ===== Other Issues? ===== | ===== Other Issues? ===== |
| If you know of other problems, please add them here or bring them to the | If you know of other problems, please bring them to the attention of the authors. |
| attention of the authors. | |
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| |
| ===== Changelog ===== | ===== Changelog ===== |