ISO date

What this is

Regex can shape-check ISO dates. Leap days and month lengths belong in a date library. For full date-time with offsets, prefer the timestamp tool.

FAQ

YYYY-MM-DDTHH:mm:ssZ?

Extend with T\d{2}:\d{2}:\d{2}(?:\.\d+)?(?:Z|[+-]\d{2}:\d{2})?

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