niem-xs:date

<xs:complexType name="date">
  <xs:annotation>
    <xs:documentation>A data type for a calendar date with the format CCYY-MM-DD.</xs:documentation>
  </xs:annotation>
  <xs:simpleContent>
    <xs:extension base="xs:date">
      <xs:attributeGroup ref="structures:SimpleObjectAttributeGroup"/>
    </xs:extension>
  </xs:simpleContent>
</xs:complexType>