January 23 (Eastern Orthodox liturgics)
- Eastern Orthodox liturgical calendar - January 24
All fixed commemorations below are observed on February 5 by Eastern Orthodox Churches on the Old Calendar.
For January 23rd, Orthodox Churches on the Old Calendar commemorate the Saints listed on January 10.Saints
- Hieromartyr Clement of Ancyra, Bishop of Ancyra, and Martyr Agathangelus
- Saint Ascholius, Bishop of Thessaloniki
- Venerable Eusebius, recluse of Mount Coryphe near Antioch
- Venerable Salamanes the Silent, of the Euphrates, monk
- Venerable Mausimas the Syrian, priest near Cyrrhus
- Saint Paulinus the Merciful, Bishop of Nola
- The Holy Two Martyrs of Parium, near Cyzicus and Lampsacus, in Asia Minor.
Pre-Schism Western saints
- Saint Emerentiana, a martyr in Rome
- Saint Amasius of Teano, Bishop of Teano in central Italy
- Saints Severian and Aquila, a husband and wife martyred in Julia Caesarea in Mauritania in North Africa.
- Saint Martyrius, a hermit in the Abruzzi in Italy
- Saint Ormond, monk of the monastery of Saint Mairé in France, where he became abbot
- Saint Ildefonsus, Metropolitan Bishop of Toledo from 657
- Saint Colman of Lismore, Abbot of Lismore Abbey in Ireland and also a bishop
- Saint Lufthild, a saint honoured near Cologne in Germany, where she lived as an anchoress
- Saint Maimbod, martyred by pagans while preaching to peasants near Kaltenbrunn in Alsace, now in France
Post-Schism Orthodox saints
- Saint Dionysius of Olympus and Mt. Athos
- Venerable Gennadius of Kostroma, monk
- Venerable Alexander, Abbot of Voche, near Galich, in Kostroma Oblast
- New Hieromartyr Seraphim, Abbot of Holy Transfiguration Guslitsky Monastery
- New Hieromartyr Anatolius of Odessa, Bishop and Martyr
- Virgin-martyrs Evdokia and Ekaterine
- Virgin-martyr Militsa
Other commemorations
- Commemoration of the Holy Fathers of the Sixth Ecumenical Council
- Synaxis of the Saints of Kostroma.
- Translation of the relics of St. Theoctistus, Archbishop of Novgorod
- Repose of Abbot Damascene of Valaam Monastery
- Repose of Archimandrite John of the Pskov-Caves Monastery
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