October 20 - Eastern Orthodox liturgical calendar - October 22
All fixed commemorations below celebrated on November 3 by Eastern Orthodox Churches on the Old Calendar.
For October 21st, Orthodox Churches on the Old Calendar commemorate the Saints listed on October 8.
Hieromartyr Socrates, Priest, and Martyr Theodote, of Ancyra (c. 230)
Martyrs Dasius, Gaius, and Zoticus at Nicomedia (303)
Saint Darius, Zosimus, Paul, and Secundus, martyrs of Nicaea by Diocletian (4th century)
Saints Plantinos (Platinus), Irene and Marina of Raithu.
Venerable Hilarion the Great, of Gaza (371)
The 63 Martyrs of Jerusalem (724):
Pegasus, Neophytus, Acacius, Dorotheus, Stephen, Dometius, Herman, Dionysius, Epiphanius, Stratonicus, Leontius, Emmanuel, Theophilus, Elias, John, Samuel, Eulampius, Alexius, Photius, Eutrepius, Methodius, Chariton, Theophylactus, Anastasius, Andronicus, Symeon, Theoktistus, Romanus, Paul, Agathonicus, Minas, Athanasius, Jacob, Nicephorus, Porphyrius, Timothy, Irenarchus, Auxentius, Joseph, Gregory, Callinicus, Aaron, Cyriacus, Theodosius, Eustathius, Isaac, Alexander, Eleutherius, Adrian, Christophor, Antiochus, Isidore, Parthenius, Sergius, Euplus, Ignatius, Theophanes, Cyril, Zachariah, and Anthimus.
Martyrs Andrew, Stephen, Paul and Peter, under Constantine V Copronymus (c. 741–775)
Venerable Martyr Zacharias, by drowning in the sea.
Venerable Baruch, reposed in peace.
Venerable Jacob, Oeconomus of Batheos Rhyakos Monastery.
Saint Asterius of Ostia, martyred priest (c. 223)
Saint Viator of Lyons, hermit (389).
Saint Ursula of Cologne and her companions, martyrs at Cologne (c. 451)
Saint Cilinia, the mother of St Principius, Bishop of Soissons and St Remigius, Bishop of Rheims (c. 458)