Regex Editor & Tester

Validates XML Schema (XSD) xs:dateTime lexical values: an optional negative, non-zero year (4 or more digits), month and day components, a 'T' separator, and a time of 00:00:00–23:59:59 with optional fractional seconds (must end in a non-zero digit), or the special 24:00:00 midnight value. An optional timezone of 'Z' or ±hh:mm (restricted to ±14:00 max) is accepted. Useful for validating timestamps in XML documents, SOAP messages, and XSD-typed data feeds.