Calendar
urn:aero:airm:1.0.0:ConceptualModel:Subjects:Common:Temporal:Calendar
Discrete temporal reference system that provides the basis for defining temporal position to a resolution of one day (ISO 19108).
Source:
ICAO Annex 1,ICAO Annex 11,ICAO Annex 14,ICAO Annex 15,ICAO Annex 4,