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<?php $date = '0000-02-29 00:00:00 UTC'; $timestamp = strtotime($date); for ($i = 0; $i < 29; $i++) { $timestamp = (new \Datetime('@' . $timestamp))->getTimestamp(); } echo (new \Datetime('@' . $timestamp))->format('Y-m-d');
Output for git.master, git.master_jit, rfc.property-hooks
0000-01-30

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