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ISO 8601

The International Standards Organisation's standard, number 8601 is an international standard for date and time representations. It is used for all date-time representations in microformats, as well as a number of other formats (XML, XML Schema Datatypes, RDF, Atom).


For a plain-language overview of ISO 8601, we recommend the ISO 8601 summary by Markus Kuhn.


Microformats using ISO8601 include:

RFC 3339

RFC 3339 defines a profile of ISO 8601 for the use in Internet protocols and standards.

Microformats SHOULD re-use RFC 3339, but MUST NOT be limited to it, in order to include both more human readable, yet still easily unambiguously parsable, alternatives, as well as ISO 8601 features deemed to be useful.

ISO 8601 implementations in programming libraries


See also

Related pages

iso-8601 was last modified: Wednesday, December 31st, 1969