Regular Expression Library

Expressions by User

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Title	Test Details Pattern Title
Expression	^((31(?!\ (Apr(il)?\|June?\|(Sept\|Nov)(ember)?)))\|((30\|29)(?!\ Feb(ruary)?))\|(29(?=\ Feb(ruary)?\ (((1[6-9]\|[2-9]\d)(0[48]\|[2468][048]\|[13579][26])\|((16\|[2468][048]\|[3579][26])00)))))\|(0?[1-9])\|1\d\|2[0-8])\ (Jan(uary)?\|Feb(ruary)?\|Ma(r(ch)?\|y)\|Apr(il)?\|Ju((ly?)\|(ne?))\|Aug(ust)?\|Oct(ober)?\|(Sept\|Nov\|Dec)(ember)?)\ ((1[6-9]\|[2-9]\d)\d{2})$
Description
Matches	21 feb 2004
Non-Matches	30 feb2004
Author	Rating: Not yet rated. anil agarwal

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