January 5 in Eastern Orthodox liturgical calendars is a feast day and a day of commemoration of saints and martyrs. Although some Orthodox churches use the Revised Julian Calendar and others use the traditional Julian calendar, the fixed commemorations for their respective January 5 are broadly the same, no matter which calendar is used.
Eve of the Theophany of Our Lord and Saviour Jesus Christ
Prophet Micah (9th century BC) (see also: August 14)
Hieromartyr Theopemptus, Bishop of Nicomedia, and Martyr Theonas, former sorcerer (303)
Venerable Syncletica (Synkletika, Syncletike), Nun of Alexandria (c. 350 or c. 460)
Saint Talida, Abbess at Antinoë, and her disciple Taora (5th century)
Saint Apollinaria, Virgin of Egypt (c. 470) (see also: January 4)
Venerable Phosterius the Hermit (6th-7th century)
Venerable Menas of Sinai (6th century)
Venerable Gregory of Crete, Monk (c. 820)
Venerable Dorotheos the Younger, restorer of the ancient Monastery of the Holy Trinity at Chiliokomon in Amaseia, Pontus
Hieromartyr Telesphorus, a Greek who was Pope of Rome for ten years (c. 136) (see also February 22, Eastern Orthodox)
Saint Emiliana, a Roman lady and the paternal aunt of Saint Gregory the Great (6th century)
Saint Kiara (Chier), a spiritual daughter of Saint Fintan Munnu; she lived in Ireland near Nenagh in Co. Tipperary, at a place now called Kilkeary after her (c. 680)
Venerable Cera of Ireland (Ciar, Cyra, Cior, Ceara), Abbess (7th century)
Venerable Conwoïon (Convoyon), a Breton saint and Abbot (868)
Saint Gaudentius of Gnesen (Radim Gaudentius), first Archbishop of Gnesen in Poland (1004)
Venerable Symeon of the Pskov-Caves Monastery, Hieroschemamonk (1960)