crd:timeUnitType 

Time units may be second (s), hour (h: 3600 s), day (d: 86400 s), Julian year (a, yr: 365.25 d), Julian century (cy: 36525 d), or empty (i.e., dimensionless) for ISO-8601 format

Simple Type Information

Used By

Attributes crd:TimeOffset/@unit, crd:TimeOffsetRef/@unit, crd:timeCoordinateType/@unit

Source 

<xs:simpleType name="timeUnitType">
  <xs:annotation>
    <xs:documentation>Time units may be second (s), hour (h: 3600 s), day (d: 86400 s), Julian year (a, yr: 365.25 d), Julian century (cy: 36525 d), or empty (i.e., dimensionless) for ISO-8601 format</xs:documentation>
  </xs:annotation>
  <xs:restriction base="crd:unitType">
    <xs:enumeration value="s"/>
    <xs:enumeration value="h"/>
    <xs:enumeration value="d"/>
    <xs:enumeration value="a"/>
    <xs:enumeration value="yr"/>
    <xs:enumeration value="cy"/>
    <xs:enumeration value=""/>
  </xs:restriction>
</xs:simpleType>