April 20 (Eastern Orthodox liturgics) - Wikipedia
https://en.wikipedia.org/wiki/April_20_(Eastern_Orthodox_liturgics)
Apr. 19 - Eastern Orthodox Church calendar - Apr. 21. All fixed commemorations below are ... (609); Venerable Anastasius Sinaita, Abbot of the Monastery of St. Catherine at Sinai (ca. 700) (see also: April 21); Venerable Ioannis the Palaiolavritis ("of the Old Lavra"), at St. Chariton's Monastery, in the Judean Desert.
Anastasius Sinaita - Revolvy
www.revolvy.com/main/index.php?s=Anastasius%20Sinaita&item_type=topic
Anastasius Sinaïta (English: Anastasius of Sinai, died after 700), also called Anastasios of Sinai, was a ... writer, priest, monk, and abbot of Saint Catherine's Monastery at Mount Sinai. ..... Apr. 19 - Eastern Orthodox Church calendar - Apr. 21 All fixed ... Anastasius Sinaita , Abbot of the Monastery of St. Catherine at Sinai (ca.