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<?php $dt = new DateTime; for ($w = 52; $w <= 54; $w++) { $dt->setISODate(2013, $w); echo $dt->format('Y-m-d W') . "\n\n"; }
Output for rfc.property-hooks, git.master, git.master_jit
2013-12-23 52 2013-12-30 01 2014-01-06 02

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