January 1 (Eastern Orthodox liturgics)
December 31 - Eastern Orthodox liturgical calendar - January 2
All fixed commemorations below are observed on January 14 by Eastern Orthodox Churches on the Old Calendar.
For January 1, Orthodox Churches on the Old Calendar commemorate the Saints listed on December 19.
Feasts
- Feast of the Circumcision of Jesus Christ
Saints
- Martyr Theodotus, by the sword
- Martyr Basil of Ancyra
- Saint Gregory the Elder, Bishop of Nazianzus and father of Saint Gregory the Theologian
- Saint Emilia, mother of Saints Macrina the Younger, Basil the Great, Naucratius, Gregory of Nyssa, Peter of Sebaste, and Theosebia
- Saint Basil the Great, Archbishop of Caesarea in Cappadocia
- Saint Theodosius of Tryglia, Abbot
Pre-Schism Western saints
- Hieromartyr Concordius of Spoleto
- Thirty soldier-martyrs in Rome, under Diocletian
- Monastic Martyr Telemachus, hermit who came to Rome from the East and publicly protested against Pagan rites on New Year's Day, killed by gladiators in the Roman amphitheatre
- Saint Basil, Bishop of Aix en Provence
- Saint Eugendus, fourth Abbot of Condat Abbey in the Jura Mountains
- Saint Fanchea of Killeany, sister of Saint Enda of Aran
- Saint Fulgentius, Bishop of Ruspe in North Africa
- Saint Justin, Bishop of Chieti, Italy
- Saint Felix, Bishop of Bourges
- Saint Connat, Abbess of Kildare Abbey in Ireland
- Saint Maelrhys, a saint on Bardsey Island in Wales
- Saint Clarus, Abbot of St. Marcellus Monastery in Vienne, Gaul
- Saint Cúan, Irish abbot, founder of many churches and monasteries in Ireland, lived to nearly 100
- Saint Peter of Atroa, Abbot, opponent of iconoclasm
- Saint William of Dijon, Italian monastic reformer and architect
Post-Schism Orthodox saints
- Saint Petro Mohyla, Metropolitan of Kiev and Galicia
- Saint Athanasius Volkhovsky, Bishop of Mogilev and Polotsk, Wonderworker of Poltava
New martyrs and confessors
- New Martyr Peter of Tripolis in the Peloponnesus, at Temisi in Asia Minor
- New Monastic Martyr Jeremiah Leonov of Valaam
- New Hieromartyrs Platon Kulbusch, Bishop of Revel, Estonia, and Michael Blaive and Nicholas Bezhanitsky, Archpriests
- New Hieromartyrs Alexander Trapitsyn, Archbishop of Samara;
- * with him, priests: John Smirnov, Alexander Ivanov, Alexander Organov, John Suldin, Trophimus Miachin, Viacheslav Infantov, Basil Vitevsky, and Jacob Alferov
Other commemorations
- Icon of the Mother of God "You are a Vineyard"