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<?php $tz = new DateTimeZone('-09:00'); $dbTz = new DateTimeZone('+00:00'); $date = new DateTime('2015-08-31T15:00:00-09:00', $tz); var_dump($date); /* $date = $date->setTimezone($tz); var_dump($date); */ $date = $date->setTimezone($dbTz); var_dump($date);

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