April 17 - Eastern Orthodox liturgical calendar - April 19
All fixed commemorations below are observed on May 1 by Orthodox Churches on the Old Calendar. [note 1]
For April 18th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 5 .
March 27 - Eastern Orthodox liturgical calendar - March 29
March 30 - Eastern Orthodox liturgical calendar - April 1
Mar. 31 - Eastern Orthodox liturgical calendar - Apr. 2
April 1 - Eastern Orthodox liturgical calendar - April 3
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 11 - Eastern Orthodox liturgical calendar - April 13
April 14 - Eastern Orthodox liturgical calendar - April 16
April 16 - Eastern Orthodox liturgical calendar - April 18
Apr. 23 - Eastern Orthodox liturgical calendar - Apr. 25
April 25 - Eastern Orthodox liturgical calendar - April 27
April 18 - Eastern Orthodox liturgical calendar - April 20
April 19 - Eastern Orthodox liturgical calendar - April 21
January 24 - Eastern Orthodox liturgical calendar - January 26
January 28 - Eastern Orthodox liturgical calendar - January 30
February 16 - Eastern Orthodox liturgical calendar - February 18
February 19 - Eastern Orthodox liturgical calendar - February 21
April 6 - Eastern Orthodox liturgical calendar - April 8
November 25 - Eastern Orthodox liturgical calendar - November 27
Greek Sources
Russian Sources