Regex Editor & Tester

This regular expression strictly matches a 24-hour time format in `hh:mm:ss` or `h:mm:ss` notation, where the hour ranges from 0 to 23, and both minutes and seconds range from 00 to 59. It effectively validates time inputs for scheduling applications, logs, or databases, ensuring no invalid times (like 24:00:00 or 12:60:60) are accepted. The expression enforces leading colons and strict numeric boundaries from the start to the end of the string.