Regex Tester & Validator

Matches ISO 8601 timestamps that include a time zone designator, such as 2024-01-15T14:30:45Z or 2023-12-31T23:59:59.123+05:30. The pattern validates a date (YYYY-MM-DD), a time with seconds (HH:MM:SS), an optional 1-3 digit fractional second, and requires either a 'Z' for UTC or a ±HH:MM numeric offset. Useful for validating and extracting timestamps from logs, API payloads, and data interchange formats.