Commemoration of Great-Martyr Catherine of Alexandria (305-313); Venerable Mercurius, Faster, of the Kyivan Caves (14th century); Saint Luke, steward of the Kyivan Caves Abbey (13th century); Martyrs Augusta the Empress, Porphyrius Stratelates, and 200 soldiers at Alexandria (305-313) Saint Mastridia of Alexandria; Martyr Philophea (1060, Romanian); Venerable Mercurius of Chernihiv, Abbot of Bryhyntsi (1956).