Template:August 20
Afterfeast of the Dormition; Prophet Samuel; Hieromartyr Philip, Bishop of Heraclea, and with him Martyrs Severus, Memnon, and 37 soldiers in Thrace; Martyr Lucius the senator of Cyprus; Martyrs Heliodorus and Dosa (Dausa) in Persia; Martyr Photina at the door of the Church in Blachernae; Martyr King Oswin of Deira; New Martyr Theocharis of Neapolis (Nevşehir) in Cappadocia (†1740); Other events: repose of Hieromonk Seraphim (Rose) of Platina