May 12 - Eastern Orthodox Church calendar - May 14
All fixed commemorations below celebrated on May 26 by Orthodox Churches on the Old Calendar. [note 1]
For May 13th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 30 .
March 30 - Eastern Orthodox liturgical calendar - April 1
April 18 - Eastern Orthodox liturgical calendar - April 20
April 20 - Eastern Orthodox liturgical calendar - April 22
May 3 - Eastern Orthodox Church calendar - May 5
May 7 - Eastern Orthodox Church calendar - May 9
May 8 – Eastern Orthodox Church calendar – May 10
May 10 – Eastern Orthodox Church calendar – May 12
May 11 - Eastern Orthodox Church calendar - May 13
May 13 - Eastern Orthodox Church calendar - May 15
May 15 - Eastern Orthodox Church calendar - May 17
May 18 - Eastern Orthodox Church calendar - May 20
May 20 - Eastern Orthodox Church calendar - May 22
May 22 - Eastern Orthodox Church calendar - May 24
May 24 - Eastern Orthodox Church calendar - May 26
May 26 - Eastern Orthodox Church calendar - May 28
May 27 - Eastern Orthodox Church calendar - May 29
January 16 - Eastern Orthodox liturgical calendar - January 18
January 22 - Eastern Orthodox liturgical calendar - January 24
December 6 - Eastern Orthodox liturgical calendar - December 8
December 11 - Eastern Orthodox liturgical calendar - December 13
Greek Sources
Russian Sources