December 21

WESTERN CATHOLICS:
Peter Canisius (d. 1597), priest and doctor of the church (Roman calendar)
Thomas, apostle (Spanish-Mozarabic calendar)

COPTS AND ETHIOPIANS (12 kiyahk/tahsas):
Hadra of Assuan (4th-5th cent.), monk and bishop (Coptic Orthodox Church)
Immaculate conception of the blessed virgin Mary (Coptic Catholic Church)
Samuel of Waldebba (14th-15th cent.), monk (Ethiopian Church)

LUTHERANS:
Thomas, apostle

ORTHODOX CHRISTIANS AND GREEK CATHOLICS:
Juliana of Nicomedia (d. ca. 304), martyr
George the Great, the Builder (11th cent.; Georgian Church)