ISO 8601

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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).

iso_8601.png

Image: XKCD

In addition, ISO 8601 dates in particular are the most globally unambiguously human readable/writeable date format and thus should always be used on the (world wide) web.

Overview

The following are good prose overviews of ISO 8601:

Microformats

microformats in general use a subset of ISO8601 - preferring uses which are more human readable (requiring hyphens in dates, and colons in times).

All date-time properties in microformats use ISO8601 values. E.g.

Contents

RFC 3339

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

ISO 8601 implementations in programming libraries

to do! document more implementations.

Issues

See also

Related pages

ISO 8601 was last modified: Wednesday, December 31st, 1969

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