thumb|The [[Eastern Orthodox Church|Eastern Orthodox cross]]
September 21 - Eastern Orthodox liturgical calendar - September 23
All fixed commemorations below celebrated on October 5 by Orthodox Churches on the Old Calendar.
For September 22nd, Orthodox Churches on the Old Calendar commemorate the Saints listed on September 9.
Saints
- Prophet Jonah (8th century B.C.) <small>(see also: September 21 )</small>
- Hieromartyr Phocas, Bishop of Sinope, Wonderworker (117)
- Martyr Phocas the Gardener, of Sinope (320)
- Martyrs Isaac and Martin, by the sword.
- Saint Peter of Constantinople, tax collector in Africa (6th century)
- Venerable Jonah the Sabbaite, the Presbyter (9th century), father of Sts. Theophanes the Hymnographer and Theodore Graptus. <small>(see also: September 21 )</small>
Pre-Schism Western saints
- Saints Digna and Emerita, Virgin-martyrs in Rome under Valerian (c. 259)
- Martyrs Maurice and the Theban Legion, including the officers Candidus and Exuperius, at Agaunum, Gaul (c. 287)
