iso-8601: Difference between revisions
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==<nowiki>RFC 3339</nowiki>== | ==<nowiki>RFC 3339</nowiki>== | ||
RFC 3339 defines a profile of ISO 8601 for the use in Internet protocols and standards. It explicitly excludes durations and dates before the [http://en.wikipedia.org/wiki/Common_era common era]. The more complex formats like week numbers and ordinal day are not permitted (see <nowiki>RFC 3339</nowiki>, section 5.6). Microformats {{should}} use <nowiki>RFC 3339</nowiki>. | RFC 3339 defines a profile of ISO 8601 for the use in Internet protocols and standards. | ||
*It explicitly excludes durations and dates before the [http://en.wikipedia.org/wiki/Common_era common era]. | |||
*The more complex formats like week numbers and ordinal day are not permitted (see <nowiki>RFC 3339</nowiki>, section 5.6). | |||
Microformats {{should}} use <nowiki>RFC 3339</nowiki>. | |||
==Issues== | ==Issues== | ||
Revision as of 13:26, 28 August 2007
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.
Overview
For a plain-language overview of ISO 8601, we recommend the ISO 8601 summary by Markus Kuhn.
Microformats
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.
Issues
- Should we restrict microformats' use of ISO 8601 to RFC 3339 values? Andy Mabbett
- How should dates before the common era be marked up? Andy Mabbett
See also
- ISO 8601 on Wikipedia
- ISO 8601:2004(E) from ISO (zip-pdf, 228KB)
- Summary of 8601 by ISO
- Technical Committee ISO/TC 154, Processes, data elements and documents in commerce, industry and administration.
- The Mathematics of the ISO 8601 Calendar
- Current date in week date and ordinal date format
- ISO 8601 at the Open Directory Project
- W3C Specification about UTC Date and Time and IETF Internet standard RFC 3339, based on ISO 8601