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<?php $amsterdam = new DateTime('now', new DateTimeZone('Europe/Amsterdam')); $amsterdamTimestamp = $amsterdam->getTimestamp(); $newYork = new DateTime('now', new DateTimeZone('America/New_York')); $newYorkTimestamp = $newYork->getTimestamp(); var_dump($amsterdamTimestamp, $newYorkTimestamp, $amsterdamTimestamp - $newYorkTimestamp);

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