April 23 (Eastern Orthodox liturgics) - Wikipedia
https://en.wikipedia.org/wiki/April_23_(Eastern_Orthodox_liturgics)
Apr. 22 - Eastern Orthodox Church calendar - Apr. 24. All fixed commemorations below are ... the Magician, at Nicomedia (303). Martyr Valerius, by the sword. Martyr Alexandra the Empress, wife of Diocletian (303) (see also: April 21) ...
April 21 (Eastern Orthodox liturgics) - Wikipedia
https://en.wikipedia.org/wiki/April_21_(Eastern_Orthodox_liturgics)
Apr. 20 - Eastern Orthodox Church calendar - Apr. 22. All fixed commemorations below are ... (see also: April 19); Martyr Alexandra the Empress, wife of Diocletian , and those with ... Martyrs Isaacius, Apollo, and Codratus, of Nicomedia (303).