6.1. Date formats

The <pubdate> tag in your header should list the publication date of this particular version of the document (coincide with the revision date). It should be in the following format:


The date is in the format YYYY-MM-DD, which is one of the ISO 8601 standard formats for representing dates. For you Yanks out there (me too), think of it as going from the largest unit of time to the smallest.