ISSUE-92: Time zone offset vs. time zone

Time zone offset vs. time zone

State:
CLOSED
Product:
html
Raised by:
Addison Phillips
Opened on:
2011-07-22
Description:
Please add comments to bugzilla:
http://www.w3.org/Bugs/Public/show_bug.cgi?id=16962

2.5.5.7 Global dates and times
http://dev.w3.org/html5/spec/single-page.html#global-dates-and-times

This section gives a number of examples that equate time zone offset with an actual time zone. For example:

--
"1979-10-14T12:00:00.001-04:00"
One millisecond after noon on October 14th 1979, in the time zone in use on the east coast of the USA during daylight saving time.
--

It should be made clear that a zone offset is not the same thing as a time zone. Mention should be made of the need for separate time zone information when working with real date and time values in use cases that depend on it (see our note on ......)
Related Actions Items:
No related actions
Related emails:
  1. Review of tracker issues for best practices (Part III) (from addison@lab126.com on 2015-03-30)
  2. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2014-02-27)
  3. Re: [I18N-ACTION-150] Review of HTML open issues (from ishida@w3.org on 2014-02-21)
  4. [I18N-ACTION-150] Review of HTML open issues (from addison@lab126.com on 2014-02-18)
  5. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-04-22)
  6. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-04-15)
  7. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-04-15)
  8. Re: [ISSUE-92] [ISSUE-103] Locale filter note + Clarify filtering algorithm (from dave.lewis@cs.tcd.ie on 2013-04-03)
  9. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-04-01)
  10. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-03-06)
  11. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-03-06)
  12. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2013-03-06)
  13. [ISSUE-92] [ISSUE-103] Locale filter note + Clarify filtering algorithm (from ysavourel@enlaso.com on 2013-01-23)
  14. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-12-31)
  15. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-12-30)
  16. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-12-30)
  17. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-12-30)
  18. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-12-30)
  19. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-10-10)
  20. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-10-04)
  21. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-10-03)
  22. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-09-18)
  23. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-09-18)
  24. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-07-20)
  25. [Bug 17857] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-07-18)
  26. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-07-18)
  27. [Bug 17857] New: i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-07-18)
  28. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-05-16)
  29. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-05-10)
  30. [Bug 16962] i18n-ISSUE-92: time zone vs. time zone offset (from bugzilla@jessica.w3.org on 2012-05-08)
  31. Re: HTML5 Comment disposition (from w3@norbertlindenberg.com on 2012-03-20)
  32. [minutes] Internationalization WG telecon 2011-07-27 (from ishida@w3.org on 2011-07-27)
  33. I18N-ISSUE-92: Time zone offset vs. time zone [HTML5-prep] (from sysbot+tracker@w3.org on 2011-07-22)

Related notes:

[aphillip]: accepted for HTML5 LC

27 Jul 2011, 16:36:00

The issue really is: why don't we use IANA time zone names to identify time zones? "-04:00" could be "the time zone in use on the east coast of the USA during daylight saving time", but it could also be one of many other time zones.

Norbert Lindenberg, 21 Mar 2012, 05:29:13

bug 16962

Addison Phillips, 7 May 2012, 17:17:48

Filed: https://www.w3.org/Bugs/Public/show_bug.cgi?id=18646

In response to I18N-ACTION-142

Addison Phillips, 21 Aug 2012, 18:51:06

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Addison Phillips <addison@amazon.com>, Chair, Richard Ishida <ishida@w3.org>, Fuqiao Xue <xfq@w3.org>, Atsushi Shimono <atsushi@w3.org>, Staff Contacts
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <w3t-sys@w3.org>.
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