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ICR 400

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Revision as of 07:44, 4 July 2026 by VU-MaintenanceBot (talk | contribs) (Establish International Codes Registry standards framework)
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ICR 400 is the International Codes Registry standard for unambiguous machine-readable date and time representation.

ICR 400 defines notation for dates, local times, UTC times, offsets, durations, and intervals. It does not create time zones or determine daylight-saving policy.

Data type ICR form Example
Calendar date YYYY-MM-DD 2026-07-04
Local time hh:mm:ss 14:30:00
UTC time hh:mm:ssZ 12:30:00Z
Date and time YYYY-MM-DDThh:mm:ss 2026-07-04T14:30:00
UTC offset +/-hh:mm +02:00
Duration P designator P3D
Interval start/end 2026-07-01/2026-07-04
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