Here are entered texts and comparative studies of calendars of ritual observances for particular days. Works on the Christian liturgical calendar are entered under [Church calendar.] Works on the ritual calendars of other religions are entered here with the subdivision for the name of the religion, e.g. [Religious calendars--Greek religion.] Works on the Islamic [Jewish, etc.] calendar from the viewpoint of chronological reckoning are entered under [Islamic [Jewish, etc.] calendar]