[wp-trac] [WordPress Trac] #48623: WP 5.3 time problem causes day number shifts in permalinks

[WordPress Trac]

#48623: WP 5.3 time problem causes day number shifts in permalinks
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 Reporter:  steevithak    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  5.3.1
Component:  Date/Time     |     Version:  5.3
 Severity:  major         |  Resolution:
 Keywords:                |     Focuses:
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Comment (by steevithak):

 I can now confirm that swapping gmdate() back to date() at line 215 in
 link-template.php fixes all the 404s due to the off-by-one-day problem in
 the blog post links.

 I'll defer to you guys whether the change from date() to gmdate() was
 correct in this part of the code, but if it is correct, then what's
 missing may be a corresponding fix for all the existing permalinks on old
 posts that were created with the old code. My only worry is that if you
 change the actual post permalinks, it will cause breakage out on the
 Internet with search engines and other sites now linking to a permalink
 that turned out to be a "temporarylink" :) As it stands now, users coming
 in from Google searches or links on other sites are still getting to my
 posts correctly. It's only users clicking on internal links created within
 WordPress by dynamic calls to get_permalink() that are wrong and lead to
 404s.

 I've got one clue that might offer a solution though. Whatever method you
 use to calculate the date in Admin -> All Posts, still shows the correct
 day. So it's clearly using some other method than get_permalink() is and
 it's still producing consistent dates for me. So maybe get_permalink()
 needs to use whatever method that is (I haven't tracked down the code that
 generates that field but may do that tonight if I have time).

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Ticket URL: <https://core.trac.wordpress.org/ticket/48623#comment:13>
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