when 

gives the value of the date in standard form, i.e.
YYYY-MM-DD.

Attribute Information

Used By

Element tei:docDate

Source 

<xs:attribute name="when">
  <xs:annotation>
    <xs:documentation>gives the value of the date in standard form, i.e. YYYY-MM-DD.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:union memberTypes="xs:date xs:gYear xs:gMonth xs:gDay xs:gYearMonth xs:gMonthDay xs:time xs:dateTime"/>
  </xs:simpleType>
</xs:attribute>

Sample