Armenian calendar

The Armenian calendar uses the calendar era of AD 552, reflecting the separation of the Armenian Apostolic Church from the Roman Church by the Monophysite schism. The calendar traditionally used in medieval Armenia was based on an invariant year length of 365 days. As a result, the correspondence between it and both the solar year and the Julian calendar slowly drifted over time, shifting across a year of the Julian calendar once in 1,461 calendar years (see Sothic cycle).

Armenian calendar

The Armenian calendar uses the calendar era of AD 552, reflecting the separation of the Armenian Apostolic Church from the Roman Church by the Monophysite schism. The calendar traditionally used in medieval Armenia was based on an invariant year length of 365 days. As a result, the correspondence between it and both the solar year and the Julian calendar slowly drifted over time, shifting across a year of the Julian calendar once in 1,461 calendar years (see Sothic cycle).