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<?php function buildDatetime($time, $now, $zone) { $datetime = new \DateTime(); $datetime->setTimestamp(strtotime($time, $now)); $datetime->setTimezone(new DateTimezone($zone)); return $datetime; } $now = new \DateTime('2000-01-02 00:00:00', new \DateTimeZone('UTC')); date_default_timezone_set('America/Los_Angeles'); $date = buildDatetime('yesterday', $now->getTimestamp(), 'UTC'); var_dump($date->format('c'), $date->getTimezone()->getName());
Output for git.master, git.master_jit, rfc.property-hooks
string(25) "1999-12-31T08:00:00+00:00" string(3) "UTC"

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