Community Patterns

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Regular Expression
Created·2019-08-19 20:55
Flavor·PCRE (Legacy)

/
^(?:(?:(?:0?[13578]|1[02])(\/)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/)(?:29|30)\2))(?:(?:19|[2-9]\d)\d{2})$|^(?:0?2(\/)29\3(?:(?:(?:19|20)(?:0[048]|[2468][048]|[13579][26]))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\/)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:19|[0-9]\d)?\d{2})$
/
gm
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Description

This regex validates all dates between 1/1/1900 and 12/31/2099, including leap-year dates. It allows either one or two digit month/date values.

Submitted by anonymous