December 27 (Eastern Orthodox liturgics)

• Third Day of the Feast of the Nativity.^{[1][note 2]}

• Archdeacon Stephen the Protomartyr (34)^[1][3][4]
• Saint Maximus, Pope of Alexandria (282)^{[1][5][note 3][note 4]}
• Martyrs Maurice, with his son Photinus, and 70 soldiers, at Apamea (286-305)^{[1][8][note 5]} (see also: February 22)
• Saint Theodore, Patriarch of Constantinople (686)^[1][9][10]
• Venerable Theodore the Branded (Theodore Graptus), of Palestine and Bithynia, Confessor (840)^{[1][11][12][note 6][note 7]}
• Venerable Luke, Abbot of the Monastery of the Deep Stream in Triglia, in Bithynia.^{[1][13][note 8]}

• Saint Fabiola, a patrician in Rome who gave up all earthly pleasures and devoted herself to the practice of Christian asceticism and charitable work (399)^{[14][note 9]}

• Venerable Abbot Boniface (Vinogradsky), founder of St. Panteleimon Monastery, Kiev (1871)^{[15][16][note 10]}

• New Hieromartyrs Tikhon (Nikanorov), Archbishop of Voronezh, and with him 160 martyred priests (1919)^[1][17][18]
• Virgin-Martyr Antonina (1937)^[5][18]

• Uncovering of Relics (1514) of Venerable Pherapont (Therapont) of Mozhaisk, Luzhetsk.^[5][17][19] (see also: May 27 - feast day.)
• Repose of Nicholas Ilminsky, Missionary to the Tatars (1891)^[1]
• Repose of Archimandrite Agathangelus of Svir and Valaam (1909)^[1]
• Repose of Helen Ivanovna Motovilova (1910)^[1]
• Repose of Abbot Athanasius of Grigoriou Monastery, Mt. Athos (1953)^[1]
• Repose of Archimandrite Seraphim (Rozenberg) of the Pskov-Caves Monastery (1993)^[1]

• Icon of the Mother of God "the Merciful".^[17][20]

• 
  Martyrdom of Archdeacon Stephen
  (Menologion of Basil II, 10th century)
• 
  Russian icon of Protomartyr Archdeacon Stephen
  (16th century)
• 
  Saint Sviatoslav II of Kiev (far right), with his family.
• 
  St. Therapont of White Lake.
• 
  Virgin Eleousa of Kykkos
  (Simon Ushakov, 1626–1686)

• December 27/January 9. Orthodox Calendar (PRAVOSLAVIE.RU).
• January 9 / December 27. HOLY TRINITY RUSSIAN ORTHODOX CHURCH (A parish of the Patriarchate of Moscow).
• December 27. 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. 3.
• December 27. 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. pp. 398–399.

Greek Sources

• Great Synaxaristes: (in Greek) 27 ΔΕΚΕΜΒΡΙΟΥ. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.
• (in Greek) Συναξαριστής. 27 Δεκεμβρίου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).

Russian Sources

• (in Russian) 9 января (27 декабря). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 27 декабря (ст.ст.) 9 января 2013 (нов. ст.). Русская Православная Церковь Отдел внешних церковных связей. (DECR).