iso-8601-date ISO-8601 Formatted Date

A machine-processable, ISO 8601 formatted date value (“YYYY-MM-DDThh:mm:ss”) for a date-specific element, whether the date be specified as text, an ISO date, a partial date, or as any other date format. If the date given in the content of the element is in a non-Gregorian calendar, this attribute will hold the Gregorian calendar equivalent of that date.

Usage/Remarks

The ISO date format (“YYYY-MM-DDThh:mm:ss”) may be used, for example, to add a numeric value, such as “01” to a <month> element with the content of “January”. In addition, the hours, minutes, and seconds may be used to include a time-stamp for a date, for example, when a publication date has both an embargo date and an embargo time.
OPTIONAL on many elements; click for list and usage
Value Meaning
Text, numbers, or special characters The ISO 8601 standard date format (“YYYY-MM-DDThh:mm:ss”) for the date given in the element, for example, “2015-07-15”.
Restriction This is an optional attribute; there is no default.
Tagged Samples
Value of @iso-8601-date may mirror element content
...
<std-meta>
 ...
 <doc-ref>...</doc-ref>
 <release-date 
   iso-8601-date="2014-12-01" 
   date-type="published" 
   std-type="new-standard">2014-12-01</release-date>
 <comm-ref>...</comm-ref>
 ...
</std-meta>
...
Value of @iso-8601-date is for machine searching and comparison
...
<std-meta>
 ...
 <content-language>en</content-language>
 <release-date date-type="published" std-type="revised" 
   iso-8601-date="2013-10-21">October 21, 2013</release-date>
 <meta-date type="date-of-issuance" 
   iso-8601-date="2013-10-21">October 21, 2013</meta-date>
 <comm-ref-group level="1">...</comm-ref-group>
 ...
</std-meta>
...