<xs:simpleType name="ByDayListType" >
  <xs:annotation>
    <xs:documentation>The type for the BYDAY rule part of iCalendar - see http://www.ietf.org/rfc/rfc2445.txt</xs:documentation>
  </xs:annotation>
  <xs:list>
    <xs:simpleType>
      <xs:annotation>
        <xs:documentation>The datatype for a single token in BYDAY of iCalendar - see http://www.ietf.org/rfc/rfc2445.txt.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
        <xs:pattern value="(\-|\+)?([0-9]){0,2}(MO|TU|WE|TH|FR|SA|SU)"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:list>
</xs:simpleType>