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.
New martyrs and confessors
New Hieromartyr Michael Belorossov, priest (1920)
New Hieromartyr Alexander (Petrovsky), Archbishop of Kharkov (1940)
Commemoration of the Founding of Constantinople (330) as Capital of the Roman Empire
Consecration of the Saint Sophia Cathedral in Kiev.
May 11 (Eastern Orthodox liturgics) Wikipedia (Text) CC BY-SA