December 15 (Eastern Orthodox liturgics)
December 14 – Eastern Orthodox liturgical calendar – December 16
All fixed commemorations below celebrated on December 28 by Eastern Orthodox Churches on the Old Calendar.
For December 15th, Orthodox Churches on the Old Calendar commemorate the Saints listed on December 2.
Saints
Hieromartyr Eleutherius, Bishop of Illyricum , and Martyrs Anthia , Coremonus the Eparch, and two executioners who suffered with them- Martyr Eleutherius of Byzantium 'Martyr Susanna the Deaconess, Joanna in monasticism, of Palestine'''
- Venerable Pardus the Hermit of Palestine
- Saint Stephen the Confessor, Archbishop of Surozh in the Crimea
- Monk-Martyr Bacchus the New of St. Sabbas Monastery, by beheading
- Venerable Paul the New Ascetic of Mt. Latros
Pre-Schism Western saints
- Saint Valerian of Abbenza, Bishop of Abbenza in North Africa
- Martyrs Faustinus, Lucius, Candidus, Caelian, Mark, Januarius and Fortunatus, in North Africa
- Saint Mesmin, first Abbot of Micy near Orleans in France
- Saint Aubertus, Bishop of Cambrai-Arras, Netherlands
- Saint Florentius, Abbot of Bangor Abbey in Ireland
- Saint Offa of Essex, King of Essex in England, he went to Rome and took up the monastic life
- Saint Urbicius of Huesca
- Saint Adalbero (Adalbero II of Upper Lorraine), a monk at the monastery of Gorze in France, became Bishop of Verdun, but was transferred to Metz
Post-Schism Orthodox saints
- Saint Nectarius of Bitel
- '''Saint Tryphon of Pechenga, Kola Peninsula, "Enlightener of the Lapps" '''
New martyrs and confessors
- New Martyr Jonah, disciple of Saint Tryphon of Pechenga
- New Hieromartyr Hilarion Troitsky, Archbishop of Vereya
- New Hieromartyrs Alexander Rozhdestvensky and Basil Vinogradov, Priests of Tver
- New Hieromartyr Victorinus Dobronravov, Priest
- New Hieromartyr Joseph, Metropolitan of Saint Petersburg
- New Virgin Martyr Victorina Diobronravova
Other commemorations
- Sunday of the Holy Forefathers of Jesus Christ
- Commemoration of the ordination of Saint John Chrysostom as the Patriarch of Constantinople Synaxis of the Saints of the CrimeaSynaxis of the Saints of Kola
- Glorification of Saint Peter Mogila, Metropolitan of Kiev