October 31 (Eastern Orthodox liturgics)

• Apostles of the Seventy: Stachys, Amplias, Urban, Narcissus, Apelles and Aristobulus[1][2] (1st century)[3][4][5][6][note 2]
• Martyr Epimachus of Pelusium, at Alexandria (c. 250)[3][5][8][9]
• Saint Maura of Constantinople (436)[3][10][11]
• Martyrs Epimachus the Roman[12] and his companion Gordianos[13] (361-363)[3][5] (see also: May 9)
• Saint Jacob of Nisibis the Worderworker, Bishop of Antiochia Mygdoniae (4th century)[3][5][10][14]
• Martyrs Seleucius and Stratonica his wife, myrrh-gushers.[5][15]
• Martyrs Stephen, Barnabas, Trophimus, Dorymedon, Cosmas, Damian, Sabbas, Bassa, Abramios, and others with them.[5][16] (see also: September 19)
• The Holy Twelve Daughters.[17][note 3]
• The Holy Three Martyrs of Melitene.[18]
• The Holy Child Martyr.[19][note 4]

• Saint Quentin (Quinctinus), martyr.[3][10][20][21][note 5][note 6]
• Saint Erth (Erc of Slane, Herygh, Urith) (6th century)[20][note 7] (see also: November 2)
• Monk-martyr Foillan, Irish missionary, of Burgh Castle (East Anglia) and Fosse (Gaul) (655)[3][10][20][note 8][note 9]
• Saint Antoninus, called Fontana, Archbishop of Milan, Confessor (660)[7][20]
• Saint Begu, a nun at Hackness in Yorkshire in England (c. 660)[20][note 10]
• Saint Notburga, a nun at the convent of St Mary in the Capitol in Cologne in Germany (c. 714)[20]
• Saint Arnulf, a monk at Novalese in Piedmont in Italy, martyred by the Saracens (c. 840)[20]
• Saint Wolfgang of Regensburg, Bishop of Regensburg (994)[7][20][23][note 11]

• Venerable Spyridon and Nicodemus the Prosphora-bakers, of the Kiev Caves (1148)[3][5][10][24][25][note 12]
• Saint Anatolius, recluse of the Near Caves in Kiev (12th century)[3][10]
• 100,000 Martyrs of Tbilisi slain under Jalal al-Din (1227)[3][10][26]
• New Martyr Nicholas of Chios (1754)[3][5][10][27]
• Righteous Petro Kalnyshevsky, Koshevoy-Commander of the Zaporozhian Cossacks (1803)[28][note 13]

• New Hieromartyr John Kochurov, Archpriest, of Chicago and St. Petersburg, First Hieromartyr of the Bolshevik Yoke (1917)[3][10][29][30][31][32][33]
• New Hieromartyr Leonid (Molchanov), Abbot of the Sovlvychegodsk Monastery, Vologda (1918)[3][10][32][33]
• New Hieromartyrs (1937):

• Sergius, Archbishop of Yeletsky.[31]
• Vsevolod Smirnov, Protopresbyter, of Moscow.[10][31][33]
• Alexis Sibersky of Tver, and of Moscow, priest.[10][31][33][note 14]
• Alexander Vozdvizhensky and Sergius Rozanov, priests.[10][31][33]
• Basil Archangelsky, priest.[10][33][note 15]
• Euphrosynus (Antonov), Hieromonk of the Seven Lakes Monastery, Kazan.[3][10][32][33]
• Anatole (Botvinnikov), Hieromonk, of Dubrovskoye, Tver.[3][10][32][33]

• New Martyr Jacob Blatov (1937)[10][31][32][33]
• New Hieromartyr Innocent (Mazurin), Hierodeacon, of Buygorod, Volokolamsk (1938)[3][10][32][33][note 16]

• Commemoration of an Anonymous Apologist, under Julian the Apostate (c. 361)[34][note 17]
• Consecration of the Patriarchal Prayer Chapel.[35][note 18]
• Martyrdom of José Muñoz Cortés, keeper of the "Montreal" copy of the Panagia Portaitissa icon, in Athens (1997)[36][note 19]

• 
  Apostles Stachys, Amplias and Urban.
• 
  Aristobulus of Britannia.
• 
  Martyr Epimachus of Pelusium.
• 
  Saint Quentin.
• 
  Monk-martyr Foillan, Irish missionary.
• 
  St, Wolfgang of Regensburg, the Almoner.
• 
  Ven. Spyridon and Nicodemus the Prosphora-bakers, of the Kiev Caves.
• 
  New Hieromartyr John Kochurov.
• 
  New Hieromartyr Alexis Sibersky of Tver.
• 
  New Hieromartyr Alexis Sibersky of Tver.

• October 31/November 13. Orthodox Calendar (pravoslavie.ru).
• November 13 / October 31. Holy Trinity Russian Orthodox Church (A parish of the Patriarchate of Moscow).
• October 31. OCA - The Lives of the Saints.
• The Autonomous Orthodox Metropolia of Western Europe and the Americas (ROCOR). St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p. 81.
• The Thirty-First Day of the Month of October. Orthodoxy in China.
• October 31. Latin Saints of the Orthodox Patriarchate of Rome.
• The Roman Martyrology. Transl. by the Archbishop of Baltimore. Last Edition, According to the Copy Printed at Rome in 1914. Revised Edition, with the Imprimatur of His Eminence Cardinal Gibbons. Baltimore: John Murphy Company, 1916. p. 335-336.
• Rev. Richard Stanton. A Menology of England and Wales, or, Brief Memorials of the Ancient British and English Saints Arranged According to the Calendar, Together with the Martyrs of the 16th and 17th Centuries. London: Burns & Oates, 1892. pp. 519–520.

Greek Sources

• Great Synaxaristes: (in Greek) 31 ΟΚΤΩΒΡΙΟΥ. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.
• (in Greek) Συναξαριστής. 31 Οκτωβρίου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).
• (in Greek) 31/10/2015. Ορθόδοξος Συναξαριστής.

Russian Sources

• (in Russian) 13 ноября (31 октября). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 31 октября по старому стилю / 13 ноября по новому стилю. Русская Православная Церковь - Православный церковный календарь на 2018 год.