May 30 - Eastern Orthodox Church calendar - June 1
All fixed commemorations below celebrated on June 13 by Orthodox Churches on the Old Calendar.
For May 31, Orthodox Churches on the Old Calendar commemorate the Saints listed on May 18.
Apostle Hermes of Philippopolis (Hermas), of the Seventy Apostles (1st century)
Martyr Hermias of Comana (160)
Martyr Magus (the Magician), who converted upon witnessing the martyrdom of Hermias (160)
Martyr Philosophus at Alexandria (252)
Martyrs Eusebios and Charalampos, in Nicomedia, by fire. (see also May 30)
Five Martyrs of Ashkelon, by being dragged to death.
Saint Apollonios (Apollo) of the Egyptian Thebaid (395)
Saint Eustathius, Patriarch of Constantinople (1025)
Virgin-martyr Petronilla, at Rome (1st or 3rd century)
Martyr Crescentian, in Sassari in Sardinia (c. 130)
Martyrs Cantius, Cantian, Cantianilla and Protus, in Aquileia (304)
Saint Sylvius of Toulouse, Bishop of Lyon (c. 400)
Saint Lupicinus of Verona, Bishop of Verona, described as 'the most holy, the best of bishops' (5th century)
Saint Paschasius, Deacon and Confessor in Rome, who is mentioned by Pope Gregory I (512)
Saint Winnow, Mancus and Myrbad, Irish saints who lived in Cornwall where churches are dedicated to them (6th century)