October 18 (Eastern Orthodox liturgics)
October 17 - Eastern Orthodox liturgical calendar - October 19
All fixed commemorations below celebrated on October 31 by Eastern Orthodox Churches on the Old Calendar.
For October 18th, Orthodox Churches on the Old Calendar commemorate the Saints listed on October 5.
Saints
Holy Apostle and Evangelist Luke- Hieromartyr Mnason of Cyprus, Bishop, by the sword
- Holy 40 children-martyrs, by the sword.
- Hieromartyr Cyriacus, Chorepiscopus of Jerusalem Martyr Marinus the Elder, at Anazarbus
- Venerable Julian the Hermit, of the Euphrates, in Mesopotamia
- Venerables Symeon and Theodore of Thessaloniki, founders of the Mega Spilaion Monastery in Kalavryta, and Euphrosyne the shepherdess who found the Icon of the Mother of God, Wonderworkers
Pre-Schism Western saints
- Saint Justus of Beauvais, a child-martyr aged nine, he was venerated in Beauvais in France
- Saint Tryphonia, a widow martyred in Rome
- Saint Gwen, a holy woman murdered by heathen in Talgarth in Wales, daughter of St. Brychan
- Saints Gwen and Selevan, martyred Welsh missionaries, in Brittany
- Saints Brothen and Gwendolen
- Saint Monon, hermit in the Ardennes
- Saint James the Deacon, companion of St Paulinus of York in his mission to Northumbria
Post-Schism Orthodox saints
- Saint David of Serpukhov, Abbot
- New Martyrs Gabriel and Cirmidol, of Egypt
- New martyr Chryse (Zlata) of Meglen
- Saint Peter of Montenegro, Metropolitan of Cetinje
- New Hieromartyr Isidore, and his two children George and Irene, martyred under the Ottomans, newly revealed in 1953.
New Martys and Confessors
- New Hieromartyrs Andrey Voskresensky, Sergius Bazhanov, Nicholas Sokolov and Sergius Gusev, Priests
- Virgin-martyr Elizabeth Krymova
Other commemorations
- Synaxis of the Icon of Panagia of Machairas Monastery in Cyprus, one of the 70 icons of her written by the Apostle Luke.Translation of the relics of Venerable Joseph of Volokolamsk, founder of Volokolamsk Monastery.
- 1997 slaying of José Muñoz Cortés, guardian of the myrrh-streaming "Montreal" copy of the Panagia Portaitissa icon