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Regular Expression Details

Title Test Find Valid Date
Expression
(?:(?:(?:04|06|09|11)\/(?:(?:[012][0-9])|30))|(?:(?:(?:0[135789])|(?:1[02]))\/(?:(?:[012][0-9])|30|31))|(?:02\/(?:[012][0-9])))\/(?:19|20|21)[0-9][0-9]
Description
Matches dates in mm/dd/yyyy format. Matches only valid dates -except is unable to test for a leapyear. Always allows February 29th. Allows years from 1901 to 2199.
Matches
02/21/1972 | 12/31/2199 | 09/04/1901
Non-Matches
02/31/1999 | 02-21-1972 | 06/31/2001
Author Rating: Not yet rated. John Moore
Source
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Existing User Comments

Title: format dd/MM/yyyy
Name: avi mic
Date: 6/16/2011 4:15:02 AM
Comment:
(?:(?:(?:(?:0[1-9]|[12][0-9])|30))\/(?:04|06|09|11)|(?:(?:(?:0[135789])|(?:1[02]))\/(?:(?:0[1-9]|[12][0-9])|30|31))|(?:0[1-9]|[12][0-9])\/(?:02))\/(?:19|20|21)[0-9][0-9] --dd/MM/yyyy-

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