October 21 (Eastern Orthodox liturgics)
Oct. 20 - Eastern Orthodox Church calendar - Oct. 22
Fixed commemorations
All fixed commemorations below are observed on November 3 by Old Calendarists
Saints
- St. Hilarion the Great of Gaza (371)
- Hieromartyr Priest Socrates and Martyr Theodote, of Ancyra (c. 230)
- Martyrs Dasius, Gaius, and Zoticus at Nicomedia (303)
- Saints Theophilus and James, abbots of Omutch (Pskov) (c. 1412)
- St. Hilarion, abbot of Gdov (Pskov) (1476)
- St. Hilarion, Schemamonk of the Kiev Caves (1067)
- St. Philotheus of Neapolis and of Mt. Athos (14th century)
- Saints Vissarion (Bessarion) Sarai, hieromonk, and Sophronie of Ciorara, monk, confessors, and St. Oprea of Săliște
- New Martyr John of Monemvasia, Peloponnesus, at Larissa (1773)
- Hiero-confessors John of Galeёs (Ioan din Galeş) and Moses (M˘acinic), priests of Sibiel (Transylvania) (18th century)
- New Hieromartyrs Paulinus (Kroshechkin), archbishop of Mogilev; Damian (Voskresensky), archbishop of Kursk; Arcadius (Pavlovich), bishop of Ekaterinburg; priests Anatole and Nicander; and Martyr Cyprian (1937)
Other commemorations
- Translation of the relics of St. Christodulus the Wonderworker of Patmos (1093)
- Translation of the relics (1206) of St. Hilarion, bishop of Meglin, Bulgaria (1164)
- Repose of Schema-archimandrite Herman (Bogdanov) (1938) and his fellow ascetic Archimandrite Sergius (Ozerov), of New Valaam in Siberia