RegEx for date time format

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1.75/5 (3 votes)

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Hi,

I would like to have a regular expression for the date time in the below formats

mm/dd/yyyy HH:MM:SS AM/PM
mm/dd/yyyy HH:MM AM/PM

Regards,
Vipul

Posted 14-Dec-10 22:04pm

Vipul Mehta

Updated 14-Dec-10 22:07pm

Toniyo Jackson

v2

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Sandeep Mewara 15-Dec-10 4:10am

No effort.

2 solutions

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OriginalGriff · Answer 1 · 2010-12-14T22:18:00

Rather than re-invent the wheel, see http://regexlib.com/DisplayPatterns.aspx?cattabindex=4&categoryId=5[^] which has similar expressions. Be warned though: they are complex, so if they don;t fit your need exactly, then you have a long job ahead. Get a copy of Expresso[^] it's free and can really help debug a regex!

I don't know what you are trying to achieve, but you may be better off using DateTime.ParseExact[^] instead...

Prasanta_Prince · Answer 2 · 2011-05-15T21:04:00

Solution 2

^((((31\/(0?[13578]|1[02]))|((29|30)\/(0?[1,3-9]|1[0-2])))\/(1[6-9]|[2-9]\d)?\d{2})|(29\/0?2\/(((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])\/((0?[1-9])|(1[0-2]))\/((1[6-9]|[2-9]\d)?\d{2})) (20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d$

Hope this can help you.

Posted 15-May-11 21:04pm

Prasanta_Prince

Comments

komalpreet kaur 26-Mar-13 3:49am

format shud be in mm/dd/yyyy hh:mm:ss... but it is in dd/mm/yyyy format