May 10 – 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 (66) Martyrs Maximus, Bassus, and Fabius (284–305) Hieromartyr Mocius (Mucius), presbyter of Amphipolis in Macedonia, beheaded in Byzantium (288) Martyr Armodius Martyr Acacius of Lower Moesia Saints Cyril and Methodius, Equal-to-the-Apostles and Enlighteners of the Slavs (869, 885) (see also: July 17 ) Saints Clement of Ohrid (916), Sabbas (10th century), Angelarius (Angelyar) (ca. 886), Gorazd (896), and Naum of Preslav (910) — 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 (870) (see also: October 29) Pre-Schism Western saints Hieromartyr Anthimus of Rome, and martyrs Sisinius the deacon with Diocletius and Florentius (disciples of St. Anthimus), (284–305) Saint Principia of Rome, a holy virgin in Rome and disciple of St Marcella (420) Saint Mammertus, Archbishop of Vienne (475) Saint Possessor of Verdun, Bishop of Verdun, he and his flock were greatly troubled by the barbarian invasions of Franks, Vandals and Goths (c. 486) Saint Tudy (Tudinus, Tegwin, Thetgo), a disciple of St Brioc in Brittany (5th century) Saint Credan of Cornwall, hogherd. Saint Gangulphus (760) Saint Fremund of Dunstable, Anglo-Saxon hermit, killed by his kinsman Oswy with the help of Danish invaders who had also murdered King Edmund (866) Saint Odo of Cluny, the second Abbot of Cluny (942) Saint Mayeul (Majolus, Maieul), Abbot of Cluny (994) Saint Odilo of Cluny (1049) Post-Schism Orthodox saints Martyrs Olympia, abbess of Mytilene, and nun Euphrosyne (1235) Saint Sophronius of the Kiev Caves, recluse (13th century) Saint Nicodemus of Pec, Archbishop of Serbia (1324) Hieromartyr Joseph, first Metropolitan of Astrakhan (1672) Blessed Christopher of Georgia (Christesias), monk at the Monastery of St. John the Baptist, at the David Gareja monastery complex, "The Thebaid of Georgia" (1771/1871) New Martyr Dioscorus (Dioscorides) the New, of Smyrna New Martyr Argyrus (Argyrus, Argyres) of Thessalonica (1806/1808) Saint Theophylact, bishop of Stavropol and Ekaterinodar (1872) New martyrs and confessors New Hieromartyr Michael Belorossov, priest (1920) New Hieromartyr Alexander (Petrovsky), Archbishop of Kharkov (1940) Other commemorations Commemoration of the Founding of Constantinople (330) as Capital of the Roman Empire Consecration of the Saint Sophia Cathedral in