October 4 (Eastern Orthodox liturgics)
October 3 - Eastern Orthodox liturgical calendar - October 5
All fixed commemorations below celebrated on October 17 by Eastern Orthodox Churches on the Old Calendar.
For October 4th, Orthodox Churches on the Old Calendar commemorate the Saints listed on September 21.
Saints
Hieromartyr Hierotheus of Athens, first Bishop of Athens- Venerable Theodore the Wonderworker, Bishop of Tamassos, Cyprus
- Martyrs Gaius, Faustus, Eusebius, and Chaeremon, Deacons, of Alexandria '
- Martyrs Domnina and her daughters Berenice and Prosdoce, of Syria
- Martyr Adauctus and his daughter St. Callisthene, of Ephesus.Venerable Paul the Simple and Venerable Ammon, of Egypt, disciples of St. Anthony the Great.'''
- Hieromartyr Peter of Capitolia, Bishop of Bostra in Arabia
- Venerable John of Cyprus
- Saint Vladimir Yaroslavich, prince of Novgorod, and his mother St. Anna of Novgorod
Pre-Schism Western saints
- Saint Petronius of Bologna, Bishop of Bologna
- Saint Quintius of Tours, a citizen of Tours, martyred at L'Indrois near Montrésor
- Saint Aurea, a Syrian who moved to France and became Abbess of St Martial in Paris, where she remained for thirty-three years
Post-Schism Orthodox saints
- Saints Helladius and Onesimus of the Near Caves in Kiev
- Saint Ammon, recluse, of the Far Caves in Kiev
- Saint Stephen Stiljanovic, despot of Srem, Serbia, and his wife St. Elena
- Saints Jonah and Nectarius, monks, of Kazan
- Hieromartyr Evdemoz I, Catholicos of Georgia
- Saint Peter of Kuznetsk, Siberia
New Martyrs and Confessors
- New Hieromartyr Demetrius Voznesensky, Priest
- New Hieromartyrs Nicholas Vereschagin, Michael Tverdovsky, Jacob Bobirev and Tikhon Archangelsky, Priests
- New Hieromartyr Basil, Archimandrite, of Stary Kelets, Ryazan
- Saint Khionia Archangelsky, Confessor
- New Hiero-confessor Barsanuphius of Kherson
- New Hiero-confessor Dumitru Stăniloae, Priest
Other commemorations
Uncovering of the relics of St. Gurias, first Archbishop of Kazan, and St. Barsanuphius, Bishop of Tver Synaxis of the Saints of Kazan.- Synaxis of the Icon of the Theotokos "Kitrinopetritissa" in Australia.