April 21 - Eastern Orthodox liturgical calendar - April 23
Holy Apostle Nathaniel of the Twelve (Bartholomew).
Venerable Theodore the Sykeote, Bishop of Anastasiopolis in Galatia.
Saint Vitalis of Gaza, monk of the monastery of Abba Seridus at Gaza.
Pope Saint Gaius.
April 22 - Eastern Orthodox liturgical calendar - April 24
April 22 (Eastern Orthodox liturgics)
…April 21 - Eastern Orthodox liturgical calendar - April 23 All fixed commemorations below are observed on May 5 by Eastern Orthodox Churches on the Old Calendar…
Holy Glorious Great-martyr and Victory-bearer and Wonderworker George.
Altar with sarcophagus containing the relics of Saint Venerius, Marolus, Glycerius, Lazarus, Bishops of Milan.
Saint Ibar of Beggerin
Tomb of Saint Gerard of Toul in the cathedral of Toul.