The man page for cron(8) says
Daylight Saving Time and other time changes
...
Time changes of more than 3 hours are considered to be
corrections to the clock or timezone, and the new time
is used immediately.
However this does not seem to be working. I've recently updated my
machine's time-zone from US/Pacific to Asia/Manila. Yet my daily(5)
continues to run based on the original time-zone. The zone change
amounts to a 15-hour difference, certainly enough to trigger the above
3-hour rule.
In order to get the schedule to sync-up with the new zone, I had to
kill(1) and then restart cron.
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