Sep. 18 - Eastern Orthodox Church calendar - Sep. 20
All fixed commemorations below celebrated on October 2 by Orthodox Churches on the Old Calendar.
For September 18th, Orthodox Churches on the Old Calendar commemorate the Saints listed on September 6.
Martyrs Trophimus, Sabbatius, and Dorymedon of Synnada (276-282)
Martyr Zosimas, hermit of Cilicia (4th century)
Saint Felix and Constantia, martyrs under Nero in Nocera near Naples, in Italy (1st century)
Hieromartyrs Januarius, Bishop of Benevento, and his companions, at Pozzuoli (305): (see also: April 21 - East)
Festus, Proclus, and Sossius, Deacons;
Martyrs Desiderius, Reader, and Gantiol, Eutychius, and Acutius.
Saint Eustochius, successor of St Brice as Bishop of Tours in France (461)
Saint Seguanos (Sequanus, Seine, Sigo), in the diocese of Langres in Gaul, Confessor (580)
Saint Goeric (Abbo), successor of St Arnulf as Bishop of Metz in France (647)
Saint Pomposa, a nun at Peñamelaria near Cordoba in Spain, beheaded by the Moors in Cordoba (853)
Saint Theodore of Tarsus, Archbishop of Canterbury (690)
Blessed Igor (George), tonsured Gabriel, great prince of Chernigov and Kiev (1147)
Blessed Prince Theodore of Smolensk and Yaroslavl (1299) and his children Saints David (1321) and Constantine (c. 1322)
New Martyrs and Confessors
New Hieromartyr Constantine (Golubev), Priest, of Bogorodsk, and two martyrs with him (1918) (see also: November 7 - Uncovering)
New Hieromartyr Nicholas Iskrovsky, Protopresbyter (1919)
Venerable Alexis, Hiero-Schemamonk of Zosima Hermitage (1928)
New Hieromartyr Constantine Bogoslovsky, Priest (1937)
New Martyr Nilus Smirnov, Priest (1938)
Virgin-martyr Mary (Mamontova-Shashin), at Bamlag (1938)
September 19 (Eastern Orthodox liturgics) Wikipedia (Text) CC BY-SA