April 20 (Eastern Orthodox liturgics)

Apr. 19 - Eastern Orthodox Church calendar - Apr. 21

All fixed commemorations below are observed on May 3 by Orthodox Churches on the Old Calendar.

For April 20th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 7.

Child-Martyr Gabriel of Zabludov (Gabriel of Slutsk).

Saint Nikolaj Velimirović.

Greek Sources

Russian Sources

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Wikipedia