April 11 - Eastern Orthodox liturgical calendar - April 13 All fixed commemorations below are observed on April 25 by Eastern Orthodox Churches on the Old Calendar. For April 12th, Orthodox Churches on the Old Calendar commemorate the Saints listed on March 30. Saints Hieromartyr Artemon the Presbyter, of Laodicea (284-305) (see also: March 24, April 13) Martyrs Demas and Protion, and those with them, by beheading (285-305) Martyr Sabbas the Goth, at Buzău in Wallachia (372) (see also: April 15 - Slavic) Saint Isaac the Syrian (Isaac of Monteluco), Abbot of Spoleto, Italy (c. 550) (see also: April 11 - West) Venerable monk-martyrs David, John and Menas, of Palestine, shot by archers (after 636) Saint Basil the Confessor, Bishop of Parium (754) Venerable Anthusa of Constantinople (809) Venerable Athanasia the Wonderworker (Athanasia of Aegina), Abbess, of Aegina (860) (see also: April 18 - Greek) Saint Sergius II, Ecumenical Patriarch of Constantinople (1019) Pre-Schism Western saints Saint Vissia, a virgin-martyr in Fermo near Ancona in Italy under Decius (c. 250) Saint Victor of Braga (São Victor), a catechumen martyred in Braga in Portugal under Diocletian, thus baptised in his own blood (c. 300) Saint Julius I, Pope of Rome, defended St Athanasius against his Arian accusers, and also built many churches (352) Hieromartyr Zeno of Verona, Bishop of Verona (371) Saint Constantine, the first Bishop of Gap in France (529) Saint Wigbert (690) Saint Tetricus, Abbot of St Germanus in Auxerre, then Bishop of Auxerre by popular acclamation, murdered in his sleep (707) Saint Damian of Pavia, Bishop of Pavia in Lombardy in Italy, who vigorously opposed Monothelitism (710) Saint Erkemboden, a monk at Sithin in Saint-Omer in France, later Bishop of Thérouanne (714) Saint Alferius, (Alpherius, Adalfericus), monk, founder of the Monastery of La Cava (1050) Post-Schism Orthodox saints Saint Basil of Ryazan, Bishop of Ryazan (1295) (see also: May 21, June 10, July 3, and July 10) Venerable Acacius of Kapsokalyvia Skete, Mount Athos (1730) New martyrs and confessors New Hieromartyr Demetrius Rozhdestvensky, Protopresbyter of Alma-Ata (1921) New Hieromartyr Sergiy Krestnikov (1938) Other commemorations Deposition of the Cincture (Sash) of the Most Holy Theotokos in Constantinople (942) (see also: August 31) Synaxis of the Murom Icon of the Most Holy Theotokos (early 12th century) Synaxis of the Belinich Icon of the Most Holy Theotokos (1876) Venerable Neophytus the Recluse, of Cyprus, Wonderworker (1204) (see also: January 24 -