December 16 (Eastern Orthodox liturgics)
December 15 - Eastern Orthodox liturgical calendar - December 17
All fixed commemorations below celebrated on December 29 by Eastern Orthodox Churches on the Old Calendar.
For December 16, Orthodox Churches on the Old Calendar commemorate the Saints listed on December 3.
Saints
Prophet Haggai- Martyr Marinus of Rome
- Martyrs Promus and Hilarion, by the sword
- Saint Memnon, Archbishop of Ephesus Saint Modestus II, Patriarch of Jerusalem
- Saint Simeon I, Patriarch of Antioch Blessed Empress Theophano Martinakia the Wonderworker, wife of Byzantine Emperor Leo VI the Wise
- Saint Nicholas II Chrysoberges, Ecumenical Patriarch of Constantinople
Pre-Schism Western saints
- Martyrs Valentine, Concordius, Navalis and Agricola, martyrs venerated in Ravenna in Italy
- Women Martyrs of North-West Africa, a great number of women martyred under Hunneric, Arian King of the Vandals
- Saint Dabheog, founder of a monastery on an island in Lough Derg in Donegal in Ireland
- Saint Ado of Vienne
- Saint Adelaide of Italy, daughter of the King of Burgundy, she was married to Lothair II of Italy, became a nun
Post-Schism Orthodox saints
Venerable Sophia (Solomonia) Saburova of Suzdal, the Wonderworker, Nun, wife of Grand Duke Basil III of Moscow- Saint John Rastorguyev the Barefoot, fool-for-Christ, of Kiev
New martyrs and confessors
- New Hieromartyr Vladimir Alexeyev, Priest of Okhansk
- New Hieromartyr Arcadius Ostalsky, Bishop of Bezhetsk
- New Hieromartyr Alexander Kolokolov, Protopresbyter of Tver
- New Hieromartyr Paul Favoritov, Priest of Tver
- New Hieromartyr Macarius Smirnov, Priest-monk of Tver
- New Hieromartyr Peter Zinoviev, Priest of Tver
- New Hieromartyr Theodosius Boldiriev, Priest of Tver
- New Hieromartyrs Priests Elias Cheredeev, and Vladimir Damaskinus