[wp-trac] [WordPress Trac] #18146: Add user-level timezone setting

[WordPress Trac]

#18146: Add user-level timezone setting
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 Reporter:  RanYanivHartstein  |       Owner:  swissspidy
     Type:  feature request    |      Status:  assigned
 Priority:  normal             |   Milestone:  Future Release
Component:  Date/Time          |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  needs-patch        |     Focuses:
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Comment (by Rarst):

 I definitely thought about user time zone making sense before. Also I
 think this wouldn't be too hard on technical side once we get through
 current push to clean up the Date/Time component.

 However my more recent thoughts end up in a space of some serious UX
 implications. Introducing concept of user time zone implicitly in any
 place through the front end and admin immediately causes serious
 ambiguities.

 User is setting a publish time on a post — are they using site time or
 user time?
 User sees time output in admin — do they see site time or user time?
 Users sees time output on front end — do they see site time or user time?

 User locale works well because it's "obvious". User time is significantly
 more prone to cause errors in site operation and communication between
 site users.

 On admin side I would guess all date picker workflows would need to be
 looked at and reworked for extreme clarity of what happens with user time
 zone in effect.

 On front end side I am not confident we could just override outputs with
 user time zone. It might make sense to keep current function outputting
 site time, and introduce new API functions to output user time explicitly.
 Not sure.

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Ticket URL: <https://core.trac.wordpress.org/ticket/18146#comment:40>
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