May 31 (Eastern Orthodox liturgics)

May 30 - Eastern Orthodox Church calendar - June 1

All fixed commemorations below celebrated on June 13 by Orthodox Churches on the Old Calendar.^{[note 1]}

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)^[1][2]
• Martyr Hermias of Comana (160)^{[1][3][4][note 2]}
• Martyr Magus (the Magician), who converted upon witnessing the martyrdom of Hermias (160)^{[1][5][note 3]}
• Martyr Philosophus at Alexandria (252)^[1][6]
• Martyrs Eusebios and Charalampos, in Nicomedia, by fire.^[7] (see also May 30)
• Five Martyrs of Ashkelon, dragged to death.^[8]
• Saint Eustathius, Patriarch of Constantinople (1025)^{[1][9][note 4]}

• Virgin-martyr Petronilla, at Rome (1st or 3rd century)^{[4][10][11][note 5]}
• Martyr Crescentian, in Sassari in Sardinia (c. 130)^[4][11][12]
• Martyrs Cantius, Cantian, Cantianilla and Protus, in Aquileia (304)^{[4][11][13][note 6]}
• Saint Sylvius of Toulouse, Bishop of Lyon (c. 400)^[14]
• Saint Lupicinus of Verona, Bishop of Verona, described as 'the most holy, the best of bishops' (5th century)^[4][11][15]
• Saint Paschasius, Deacon and Confessor in Rome, who is mentioned by Pope Gregory I (512)^[4][11][16]
• Saint Winnow, Mancus and Myrbad, Irish saints who lived in Cornwall where churches are dedicated to them (6th century)^[11]

• Saint Philotheus (Leschynsky) of Tobolsk, Metropolitan of Tobolsk and the "Apostle of Siberia" (1727)^{[1][17][18][note 7]}

• Hieromartyr Archpriest Philosophus (Ornatsky), with his sons Boris and Nicholas, in St. Petersburg (1918)^[1][19][20]
• Hieromartyrs Hierotheus (Afonin), Bishop of Nikolsk (1928), and Hieroschemamonk Seraphim (Nikolsky) (1923)^[1][21]

• First translation of the relics (1591) of Hieromartyr Philip II, Metropolitan of Moscow and all Russia (1569), to Solovki.^[1]
• Repose of Archimandrite Macarius of Peshnosha Monastery, disciple of Blessed Theodore of Sanaxar (1811)^[1]
• Finding of the relics (1960) of New Martyr Nicholas the Deacon, of Mytilene (1463)^[1]

• 
  St. Hermes of Philippopolis, of the Seventy Apostles.
• 
  St. Petronilla (Aurelia Petronilla), virgin martyr.
• 
  St. Petronilla (Aurelia Petronilla), by Sano di Pietro.
• 
  Saint Philotheus (Leshchinsky) of Tobolsk, Metropolitan of Tobolsk and the "Apostle of Siberia" .
• 
  Hieromartyr Archpriest Philosophus (Ornatsky) (†1918).
• 
  St. Philip, Metropolitan of Moscow.

• May 31/June 13. Orthodox Calendar (PRAVOSLAVIE.RU).
• June 13 / May 31. HOLY TRINITY RUSSIAN ORTHODOX CHURCH (A parish of the Patriarchate of Moscow).
• Complete List of Saints. Protection of the Mother of God Church (POMOG).
• May 31. OCA - The Lives of the Saints.
• Dr. Alexander Roman. May. Calendar of Ukrainian Orthodox Saints (Ukrainian Orthodoxy - Українське Православ'я).
• May 31. Latin Saints of the Orthodox Patriarchate of Rome.
• May 31. The Roman Martyrology.

Greek Sources

• Great Synaxaristes: (in Greek) 31 ΜΑΪΟΥ. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.
• (in Greek) Συναξαριστής. 31 Μαΐου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).

Russian Sources

• (in Russian) 13 июня (31 мая). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 31 мая (ст.ст.) 13 июня 2013 (нов. ст.). Русская Православная Церковь Отдел внешних церковных связей. (DECR).