Difference between revisions of "iso-8601"

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=ISO 8601=
=ISO 8601=

Revision as of 21:47, 20 December 2008

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.


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.

  • It explicitly excludes durations and dates before the common era.
  • The more complex formats like week numbers and ordinal day are not permitted (see RFC 3339, section 5.6).

Microformats SHOULD use RFC 3339.


  • How should dates before the common era be marked up? Andy Mabbett
  • If a web page is created or edited by a non-technical human, it is unfriendly to expect them to work in ISO date format. Charles Belov

See also

Related pages