can't give you an exact answer, but I would think that (code not tested, not
even sure parentethis are the best way to group tests!)

[0-1][0-9] will test for 00 to 19
2[0-3] will test for 20 to 23
[0-5][0-9] will test for 00 to 59

so (([0-1][0-9]) | (2[0-3])) : [0-5][0-9] should cover 00:00 to 23:59

Have I missed any situation?
______________________________
Franck Schmidlin
Corporate Technical Consultant

Anite Public Sector
______________________________

-----Original Message-----
From: Kaushik Pawar [mailto:kaushik_pawar@...]
Sent: 08 September 2003 15:12
To: validation@yahoogroups.com
Subject: [validation] Time Validation (24 hour format) using Regular
Expression


Hello everybody,

I am trying to build a regular expression to validate time data in 24-
hour format (without AM/PM).

It should be able to validate time strings like - 08:59, 00:30, 23:00
etc. But should invalidate 24:00, 25:87 etc...

Can anybody please help me.

Regards,
Kaushik.



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