thumb|The [[Eastern Orthodox Church|Eastern Orthodox cross]]
Sep. 20 - Eastern Orthodox liturgical calendar - Sep. 22
All fixed commemorations below celebrated on October 4 by Orthodox Churches on the Old Calendar.
For September 21st, Orthodox Churches on the Old Calendar commemorate the Saints listed on September 8.
Feasts
- Apodosis of the Exaltation of the Cross.
Saints
- Prophet Jonah (8th century BC) <small>(see also: September 22 )</small>
- Apostle Quadratus of the Seventy, Apologist (c. 130)
- Martyr Eusebius of Phoenicia (2nd century)
