May 11 (Eastern Orthodox liturgics)
– Eastern Orthodox Church calendar – May 12
All fixed commemorations below celebrated on May 24 by Orthodox Churches on the Old Calendar.
For May 11th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 28.Saints
- Martyr Evellius, under Nero
- Martyrs Maximus, Bassus, and Fabius
- Hieromartyr Mocius, presbyter of Amphipolis in Macedonia, beheaded in Byzantium
- Martyr Armodius
- Martyr Acacius of Lower Moesia
- Saints Cyril and Methodius, Equal-to-the-Apostles and Enlighteners of the Slavs
- Saints Clement of Ohrid, Sabbas, Angelarius , Gorazd, and Naum of Preslav — Disciples of Saints Cyril and Methodius and missionaries of the Slavs, Wonderworkers and Equal-to-the-Apostles
- Saint Rostislav the Prince of Great Moravia, Confessor of the Faith
Pre-Schism Western saints
- Hieromartyr Anthimus of Rome, and martyrs Sisinius the deacon with Diocletius and Florentius,
- Saint Principia of Rome, a holy virgin in Rome and disciple of St Marcella
- Saint Mammertus, Archbishop of Vienne
- Saint Possessor of Verdun, Bishop of Verdun, he and his flock were greatly troubled by the barbarian invasions of Franks, Vandals and Goths
- Saint Tudy, a disciple of St Brioc in Brittany
- Saint Credan of Cornwall, hogherd.
- Saint Gangulphus
- Saint Fremund of Dunstable, Anglo-Saxon hermit, killed by his kinsman Oswy with the help of Danish invaders who had also murdered King Edmund
- Saint Odo of Cluny, the second Abbot of Cluny
- Saint Mayeul, Abbot of Cluny
- Saint Odilo of Cluny
Post-Schism Orthodox saints
- Martyrs Olympia, abbess of Mytilene, and nun Euphrosyne
- Saint Sophronius of the Kiev Caves, recluse
- Saint Nicodemus of Pec, Archbishop of Serbia
- Hieromartyr Joseph, first Metropolitan of Astrakhan
- Blessed Christopher of Georgia, monk at the Monastery of St. John the Baptist, at the David Gareja monastery complex, "The Thebaid of Georgia"
- New Martyr Dioscorus the New, of Smyrna
- New Martyr Argyrus of Thessalonica
- Saint Theophylact, bishop of Stavropol and Ekaterinodar
- New Hieromartyr Michael Belorossov, priest
- New Hieromartyr Alexander, Archbishop of Kharkov
Other commemorations
- Commemoration of the Founding of Constantinople as Capital of the Roman Empire
- Consecration of the Saint Sophia Cathedral in Kiev.
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