April 12 - Eastern Orthodox liturgical calendar - April 14
All fixed commemorations below are observed on April 26 by Eastern Orthodox Churches on the Old Calendar. [note 1]
For April 13, Orthodox Churches on the Old Calendar commemorate the Saints listed on March 31 .
Mar. 31 - Eastern Orthodox liturgical calendar - Apr. 2
April 3 - Eastern Orthodox liturgical calendar - April 5
April 4 – Eastern Orthodox liturgical calendar – April 6
April 5 — Eastern Orthodox liturgical calendar — April 7
April 7 - Eastern Orthodox liturgical calendar - April 9
April 8 - Eastern Orthodox liturgical calendar - April 10
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 13 - Eastern Orthodox liturgical calendar - April 15
April 14 - Eastern Orthodox liturgical calendar - April 16
April 15 - Eastern Orthodox liturgical calendar - April 17
April 16 - Eastern Orthodox liturgical calendar - April 18
April 22 - Eastern Orthodox liturgical calendar - April 24
Apr. 23 - Eastern Orthodox liturgical calendar - Apr. 25
April 26 - Eastern Orthodox Church calendar - April 28
April 18 - Eastern Orthodox liturgical calendar - April 20
April 19 - Eastern Orthodox liturgical calendar - April 21
April 20 - Eastern Orthodox liturgical calendar - April 22
April 6 - Eastern Orthodox liturgical calendar - April 8
Greek Sources
Russian Sources