[wp-trac] [WordPress Trac] #49038: Timezone setting does not display correct time of next DST transition

[WordPress Trac]

#49038: Timezone setting does not display correct time of next DST transition
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 Reporter:  autotutorial  |       Owner:  Rarst
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Date/Time     |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by Rarst):

 1. Imagine user schedules a post at 15:00 their local time.
 2. Let's say we convert it to 13:00 UTC and rely on that for everything.
 3. Meanwhile user's country decided to switch to a different time zone.
 4. 13:00 UTC no longer results in 15:00 local time when post is to be
 published.

 From user perspective this is broken, the scheduled on one time and it got
 posted on another.

 From application perspective it's impossible to predict what UTC time is
 going to correspond with future local time, because future state of time
 zones is unknowable.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49038#comment:8>
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