GregorianCalendar


             urn:aero:airm:1.0.0:ConceptualModel:Subjects:Common:Temporal:GregorianCalendar

Calendar in general use; first introduced in 1582 to define a year that more closely approximates the tropical year than the Julian calendar (ISO 19108).

Source: ICAO Annex 1,ICAO Annex 11,ICAO Annex 14,ICAO Annex 15,ICAO Annex 4,