RegEx for ShortTime string

Hi Experts,

The following regular expression validates the times in the format: "11:47AM" .... How to I change it to validate "11:47 AM" (The space is important because it needs to be in DateTime.ToShortTimeString format.


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^([1-9]|1[0-2]|0[1-9]):[0-5][0-9] [aApP][mM]$
If the space is required
^([1-9]|1[0-2]|0[1-9]):[0-5][0-9] *[aApP][mM]$
if the space is optional

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Diego PazosCommented:
ozo: I'd suggest using the ? sign instead of the asterisk. This way you ensure only one space is entered, and not more.
Agreed, assuming "11:47  AM" should be rejected.
simonm_jpAuthor Commented:
For future reference, final answer was

^([1-9]|1[0-2]|0[1-9]):[0-5][0-9] ?[aApP][mM]$
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