August 18 (Eastern Orthodox liturgics)
August 17 - Eastern Orthodox liturgical calendar - August 19
All fixed commemorations below are observed on August 31 by Eastern Orthodox Churches on the Old Calendar.
For August 18, Orthodox Churches on the Old Calendar commemorate the Saints listed on August 5.
Feasts
- Afterfeast of the Dormition.
Saints
Martyrs Florus and Laurus of Illyria, twin brothers who worked as stonemasons- The Holy Host of Paupers, brought together by Saints Florus and Laurus, who smashed the statues of the pagan gods and were martyred by fire.
- Martyrs Hermes, Serapion, Polyaenus of Rome
- Hieromartyr Emilian, Bishop of Trebia in Umbria, and lay martyrs Hilarion, Dionysius, Hermippus, and about 1,000 others, in Italy
- Venerable Barnabas and his nephew Sophronius, founders of Mount Mela Monastery, near Trebizond
- Venerable Christopher of Trebizond, Abbot of Mount Mela Monastery
- Saints [Patriarch Patriarch John V of Constantinople|John V of Constantinople|John] and George, Patriarchs of Constantinople.
- Martyr Juliana near Strobilos in Lycia.
- Martyr Leo, drowned off the coast of Myra in Lycia.
- The 4 Venerable Ascetics, reposed in peace.
- Saint Macarius, Abbot of the Pelekete Monastery near Prusa, Bithynia
- ''Venerable John of Rila, founder and Abbot of Rila Monastery, Bulgaria''
Pre-Schism Western saints
- Saint Agapitus of Palestrina, a fifteen-year-old who bravely confessed Christ and was martyred in Palestrina near Rome
- Martyrs John and Crispus, priests in Rome who devoted themselves to recovering and burying the bodies of the martyrs, for which they also suffered martyrdom.
- Saint Firminus of Metz, Greek or Italian by origin, he was Bishop of Metz in France for eight years, Confessor
- Saint Daig Maccairill, disciple of St Finian, he founded a monastery at Inis Cain Dega, and was both abbot and bishop
- Saint Milo, a monk together with his father at Fontenelle Abbey in France, and later a hermit
- Saint Inan, a hermit in Ayrshire in Scotland, where churches are dedicated to him
Post-Schism Orthodox saints
- Saint Christodoulus the Philosopher, called "the Ossetian," of Georgia
- Venerable Sophronius of St. Anne's skete on Mount Athos
- New Monk-martyr Demetrius the Vlach, of Samarina, at Ioannina
New martyrs and confessors
- New Hieromartyrs Archimandrite Augustine of Orans Monastery, and Archpriest Nicholas of Nizhni-Novgorod, and 15 people with them
- New Hieromartyr Gregory Bronnikov, Priest, and Martyr Eugene Dmitriev and Michael Eregodsky
Other commemorations
- Uncovering of the Relics of Venerable Arsenios the New of Paros
- Repose of Schemamonk Nicholas "the Turk," of Optina Skete
Icons
- Icon of the Mother of God the "Directress" of Trebizond, also known as ''"Panagia Soumeliotissa".''