[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:
     Type:  feature request    |      Status:  reopened
 Priority:  normal             |   Milestone:  Future Release
Component:  Users              |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  needs-patch        |     Focuses:
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Comment (by johnjamesjacoby):

 I've considered this a huge oversight for years, particularly for the bb's
 where minutes and seconds often matter. That said, the internet has
 changed and WordPress not having these settings polluting `usermeta` works
 in our favor now that modern browsers and a bit of JavaScript can guess a
 user locale relatively accurately (proxies and VPN's yadda yadda yadda)

 I'd like to propose we include in core an extremely lightweight script to
 sniff the client timezone and provide the option of adjusting output using
 a `time` tag in themes with proper micro-formatting and an optional `data`
 attribute to allow said JavaScript to update the tag accordingly.

 To take this even further, we could attach `timezone_string` metadata to
 each post & comment object based on where the author was located when they
 posted it. This way we can calculate both the GMT offset and, quite
 politely, the user-to-user offset to propagate a where-in-the-world effect
 amongst all WordPress powered sites.

 Should a user wish to stay timezone agnostic, we can fallback on server
 time & GMT the same as we do currently.

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Ticket URL: <https://core.trac.wordpress.org/ticket/18146#comment:21>
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