niem-xs:gDay

<xs:complexType name="gDay">
  <xs:annotation>
    <xs:documentation>A data type for a gregorian day that recurs, specifically a day of the month such as the 5th of the month. Arbitrary recurring days are not supported by this datatype. The value space of gDay is the space of a set of calendar dates as defined in Section 3 of [ISO 8601]. Specifically, it is a set of one-day long, monthly periodic instances.</xs:documentation>
  </xs:annotation>
  <xs:simpleContent>
    <xs:extension base="xs:gDay">
      <xs:attributeGroup ref="structures:SimpleObjectAttributeGroup"/>
    </xs:extension>
  </xs:simpleContent>
</xs:complexType>