Regex Tester & Validator

This regular expression matches a date and time string formatted according to the ISO 8601 standard in UTC (Zulu time). It looks for a specific pattern of year, month, day, hour, minute, and second, separated by standard date and time delimiters. It is highly useful for validating timestamps in JSON payloads, APIs, and system logs. Note that it only validates the format's structure and not whether the date or time values themselves actually exist.