24-Hour Time Regex

Example:

^([01]?[0-9]|2[0-3]):[0-5][0-9]$

Matches:
✓ 09:30
✓ 23:59
✗ 25:00 (invalid)

Validate 24-hour time (HH:MM): ^([01]?[0-9]|2[0-3]):[0-5][0-9]$

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FAQs

Does it support seconds?

No, add :[0-5][0-9] for seconds: ^([01]?[0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]$