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att.datable.w3c

att.datable.w3c provides attributes for normalization of elements that contain datable events using the W3C datatypes.
Moduletei
Membersatt.datable [change creation date licence name time]
AttributesAttributes
whensupplies the value of the date or time in a standard form, e.g. yyyy-mm-dd.
Status Optional
Datatype data.temporal.w3c
Values A normalized form of temporal expression conforming to the W3C XML Schema Part 2: Datatypes Second Edition.

Examples of W3C date, time, and date & time formats.

<p>
 <date when="1945-10-24">24 Oct 45</date>
 <date when="1996-09-24T07:25:00Z">September 24th, 1996 at 3:25 in the morning</date>
 <time when="1999-01-04T20:42:00-05:00">Jan 4 1999 at 8 pm</time>
 <time when="14:12:38">fourteen twelve and 38 seconds</time>
 <date when="1962-10">October of 1962</date>
 <date when="--06-12">June 12th</date>
 <date when="---01">the first of the month</date>
 <date when="--08">August</date>
 <date when="2006">MMVI</date>
 <date when="0056">AD 56</date>
 <date when="-0056">56 BC</date>
</p>
This list begins in
the year 1632, more precisely on Trinity Sunday, i.e. the Sunday after
Pentecost, in that year the <date calendar="#Julianwhen="1632-06-06">27th of May (old style)</date>.
<opener>
 <dateline>
  <placeName>Dorchester, Village,</placeName>
  <date when="1828-03-02">March 2d. 1828.</date>
 </dateline>
 <salute>To
   Mrs. Cornell,</salute> Sunday <time when="12:00:00">noon.</time>
</opener>
Note

The value of the when attribute should be the normalized representation of the date, time, or combined date & time intended, in any of the standard formats specified by XML Schema Part 2: Datatypes Second Edition, using the Gregorian calendar.

The most commonly-encountered format for the date part of the when attribute is yyyy-mm-dd, but yyyy, --mm, ---dd, yyyy-mm, or --mm-dd may also be used. For the time part, the form hh:mm:ss is used.

Note that this format does not currently permit use of the value 0000 to represent the year 1 BCE; instead the value -0001 should be used.