May 13 (Eastern Orthodox liturgics)
May 12 - Eastern Orthodox Church calendar - May 14
All fixed commemorations below celebrated on May 26 by Orthodox Churches on the Old Calendar.
For May 13th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 30.
Saints
Virgin-martyr Glyceria at Heraclea, Propontis (c. 138-161)
Martyr Laodicius, jailer of Saint Glyceria (c. 138-161)
Saint Theoctistus, monk from Tekoa, Palestine
Saint Pausicacius, Bishop of Synnada (606)
Saint Nicephoros, Presbyter of the monastery of Ephapsios
Saint Sergius (George) the Confessor of Constantinople, with his wife Irene and children (c. 829-842)
Saint Euthymius the New (the Illuminator) (1028), founder of Iveron Monastery, and his fellow Georgian saints of Mount Athos:
His father monk-martyr John of Iveron (998); his cousin monk-martyr George of Iveron (1065); and monk-martyr Gabriel of Iveron (10th century)
Pre-Schism Western Saints
Saint Abban of Ireland, baptized in 165 AD, missionary in Abingdon, Oxfordshire (2nd century)