17989 2012-07-18 07:29:48 +0000 i18n-ISSUE-91: 15 minute time zones 2012-07-23 03:57:20 +0000 1 1 1 Unclassified WHATWG HTML unspecified Other other RESOLVED FIXED P3 normal Unsorted 1 contributor ian addison ian mike public-i18n-core contributor oldest_to_newest 70439 0 contributor 2012-07-18 07:29:48 +0000 This was was cloned from bug 16961 as part of operation convergence. Originally filed: 2012-05-07 17:15:00 +0000 Original reporter: Addison Phillips <addison@lab126.com> ================================================================================ #0 Addison Phillips 2012-05-07 17:15:05 +0000 -------------------------------------------------------------------------------- 2.5.5.5 Global dates and times http://www.w3.org/TR/html5/common-microsyntaxes.html#global-dates-and-times The note on time zone offsets says in part: "...and the minutes component of offsets of actual time zones is always either 00, 30, or 45." Really this is arbitrary and prone to change. The total range of time zones also changes from time to time. I would suggest inserting a "at the time this document was published" caveat such that innocent readers are not caught by surprise by a new 15 minute time zone offset or by more monkey business surrounding the IDL. ================================================================================ #1 Ian 'Hixie' Hickson 2012-05-08 00:16:02 +0000 -------------------------------------------------------------------------------- Status: Rejected Change Description: no spec change Rationale: The document is republished every few minutes, so that wouldn't help much. If the time zones change such that this note is wrong, we'll fix the note. ================================================================================ #2 Addison Phillips 2012-05-08 00:51:05 +0000 -------------------------------------------------------------------------------- It wouldn't hurt to make the change, though. It is sometimes useful to remind people that time zones are subject to (actually quite frequent) change. A lot of implementers are blissfully unaware of that fact. ================================================================================ #3 Addison Phillips 2012-05-08 00:52:03 +0000 -------------------------------------------------------------------------------- And I should add: it may be better if implementations, tests, etc. didn't assume these values were true in a hardcoded fashion. ================================================================================ 71243 1 ian 2012-07-20 04:39:22 +0000 Let me know if the new wording is satisfactory... 71244 2 contributor 2012-07-20 04:40:01 +0000 Checked in as WHATWG revision r7196. Check-in comment: Clarify that time zones change, to encourage implementors not to make bad assumptions. http://html5.org/tools/web-apps-tracker?from=7195&to=7196