Joint commemoration of the Seventy Apostles sent out by the Lord.
The Synaxis of the Seventy Apostles gathers into one feast all those disciples whom the Lord sent out two by two before Him, as recorded in the Gospel of Luke, together with the fellow-workers of the Twelve named in the Epistles.
Each of the Seventy also has his own day of commemoration through the year; on January 4 the Church honors them all together.
Feast day
On the New Calendar, Synaxis of the Seventy Apostles is commemorated on January 4. Churches on the Old (Julian) Calendar keep the feast on January 17 of the civil calendar.
Also commemorated on January 4

Apollinaria the Senator's Daughter
Holy Woman, Απολλιναρία
Venerable Apollinaria, who lived in disguise as a monk in the Egyptian desert.
Name days: Apollinaria
Nikephoros the Leper
Venerable, Νικηφόρος ο Λεπρός
Venerable Nikephoros the Leper, a Greek ascetic of the twentieth century who bore leprosy with thanksgiving.
Euthymios of Vatopedi and the Twelve Monks
Martyr, Ευθύμιος ο Βατοπεδινός
Abbot Euthymios and twelve monks of Vatopedi, martyred for resisting the union with Rome.
Onouphrios the New of Hilandar
Martyr, Ονούφριος ο Νέος
New Monk-Martyr Onouphrios of Hilandar, martyred on Chios in the nineteenth century.
Theoktistos of Cucomo
Venerable, Θεόκτιστος
Venerable Theoktistos, abbot of the monastery of Cucomo in Sicily.
Name days: Theoktistos, Theoctistus