May 17—Eastern Orthodox Church calendar—May 19
All fixed commemorations below are celebrated on May 31 by Orthodox Churches on the Old Calendar.
For May 18th, Orthodox Churches on the Old Calendar commemorate the Saints listed on May 5.
Martyrs Peter of Lampsacus, Andrew, Paul, Dionysius, and Christina, at Euridinos, under Decius (c. 249 - 251)
Martyrs Heraclius, Paulinus, and Benedimus of Athens (250)
Martyr Euphrasia of Nicaea (c. 303)
Martyr Julian, by being dragged through thorns.
Martyr Theodotus of Ancyra, and with him seven virgin-martyrs:
Alexandra, Tecusa, Claudia, Phaine (Thaïna), Euphrasia, Matrona, and Julia (304) (see also: June 7 and November 6)
Martyr Dioscorus, in Cynopolis of Egypt (305)
Martyrs Symeon, Isaac, and Bachtisius of Persia (339)
Hieromartyr Potamon (Palæmon), Bishop of Heraclea in Egypt, and Confessor (340)
The holy clergy and lay martyrs massacred under Emperor Valens (364–378)
Martyrs David and Tarechan, of Georgia (693)
Patriarch Stephen the New of Constantinople (893)
Saint Anastaso (Anastasia) of Leukadion (or Laucation), near the Bithinian sea-shore.
Saint Martinian of Areovinthus (Areobindus, Areovinchus), monk of the church of the Theotokos of the Areovinthus quarter, Constantinople.
Hosios Stephanos the Chorabyte