September 13 (Eastern Orthodox liturgics)
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Sep. 12 - Eastern Orthodox Church calendar - Sep. 14
All fixed commemorations below celebrated on Sep. 26 by Old Calendarists
Saints
- Hieromartyr Cornelius the Centurion (1st century)
- Saint Aristides the Athenian (2nd century)
- Saint Peter of Atroe (9th century)
- Martyrs Elias, Zoticus, Lucian, Valerian, Macrobius, and Gordian at Tomi in Romania (4th century)
- Martyrs Cronides and Serapion in Alexandria (237)
- Martyr Seleucus in Scythia (3rd century)
- Saint Hierotheus of Iveron Monastery on Mount Athos (1745)
- Great-martyr Ketevan, Queen of Georgia (1624)
- Saint Cornelius of Padan-Olonets, disciple of St. Alexander of Svir, and with him Saints Dionysius and Misail (16th century)
- Saint John of Prislop (Romania) (15th and 16th centuries)
- Saint Basil of Iberia, monk
- Saint Hierotheus, monk, of Kalamata
Other Commemorations
- Forefeast of the Exaltation of the Cross
- Commemoration of the Founding of the Church of the Resurrection at Jerusalem
- Repose of Dorotheus, last hermit of the Roslavl Forest (1865)
