April 15 - Eastern Orthodox liturgical calendar - April 17
All fixed commemorations below are observed on April 29 by Eastern Orthodox Churches on the Old Calendar. [note 1]
For April 16th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 3 .
March 25 - Eastern Orthodox liturgical calendar - March 27
March 26 – Eastern Orthodox liturgical calendar – March 28
Mar. 31 - Eastern Orthodox liturgical calendar - Apr. 2
April 2 - Eastern Orthodox liturgical calendar - April 4
April 4 – Eastern Orthodox liturgical calendar – April 6
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 11 - Eastern Orthodox liturgical calendar - April 13
April 12 - Eastern Orthodox liturgical calendar - April 14
April 13 - Eastern Orthodox liturgical calendar - April 15
Apr. 23 - Eastern Orthodox liturgical calendar - Apr. 25
April 18 - Eastern Orthodox liturgical calendar - April 20
April 28 - Eastern Orthodox liturgical calendar - April 30
April 29 - Eastern Orthodox liturgical calendar - May 1
May 8 – Eastern Orthodox Church calendar – May 10
May 30 - Eastern Orthodox Church calendar - June 1
June 9 - Eastern Orthodox Church calendar - June 11
June 17 - Eastern Orthodox Church calendar - June 19
January 28 - Eastern Orthodox liturgical calendar - January 30
Greek Sources
Russian Sources