ISO 8601 Date Regular Expression

A regular expression to validate an ISO 8601 date string.

/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(\.\d+)?(([+-]\d\d:\d\d)|Z)?$/i

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Matches:

• 2021-10-13T04:13:00+01:00
• 2021-10-13T12:13:00-08:00
• 2021-10-13T12:13:00

Non-Matches:

• 2021-10-13

See Also:

• 24-Hour Time (HH:mm:ss) Regular Expression
• 12-Hour Time (hh:mm:ss) Regular Expression
• Regular Expression For Year
• Regular Expression For Date Of Birth
• Date (dd/mm/yyyy) Regular Expression