August 15 - Eastern Orthodox liturgical calendar - August 17
King Abgar with the Image of Edessa (St Catherine's monastery, Mount Sinai.)
Saint Diomedes, fresco at Hilandar Monastery, Mt. Athos.
Reliquary of Saint Simplician.
Portrayal of King Stephen I on the Hungarian coronation pall from 1031.
August 19 – Eastern Orthodox liturgical calendar – August 21
Prophet Samuel.
Martyr Oswine of Deira, King of Deira and Passion Bearer.
New Martyr Theocharis of Neapolis, Cappadocia.