April 21 - Eastern Orthodox liturgical calendar - April 23
All fixed commemorations below are observed on May 5 by Eastern Orthodox Churches on the Old Calendar. [note 1]
For April 22nd, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 9 .
March 27 - Eastern Orthodox liturgical calendar - March 29
April 5 — Eastern Orthodox liturgical calendar — April 7
April 7 - Eastern Orthodox liturgical calendar - April 9
Apr. 9 - Eastern Orthodox liturgical calendar - Apr. 11
April 10 - Eastern Orthodox liturgical calendar - April 12
April 11 - Eastern Orthodox liturgical calendar - April 13
April 12 - Eastern Orthodox liturgical calendar - April 14
April 16 - Eastern Orthodox liturgical calendar - April 18
April 25 - Eastern Orthodox liturgical calendar - April 27
April 26 - Eastern Orthodox Church calendar - April 28
April 17 - Eastern Orthodox liturgical calendar - April 19
April 18 - Eastern Orthodox liturgical calendar - April 20
April 19 - Eastern Orthodox liturgical calendar - April 21
April 20 - Eastern Orthodox liturgical calendar - April 22
January 1 - Eastern Orthodox liturgical calendar - January 3
January 3 - Eastern Orthodox liturgical calendar - January 5
February 25 - Eastern Orthodox liturgical calendar - February 27
December 22 - Eastern Orthodox liturgical calendar - December 24
December 30 - Eastern Orthodox liturgical calendar - January 1
March 14 - Eastern Orthodox liturgical calendar - March 16
Greek Sources
Russian Sources