Regex Tester & Validator

This regex matches valid 24-hour time formats, allowing hours from 00 to 23, minutes from 00 to 59, and an optional seconds component from 00 to 59. It enforces leading zeros and is commonly used for validating user input in forms, parsing timestamp fields, or checking logs for correctly formatted times. The pattern does not accept 24:00 or times missing the seconds when explicitly required.