August 20 - Eastern Orthodox liturgical calendar - August 22
All fixed commemorations below are observed on September 3 by Eastern Orthodox Churches on the Old Calendar.
For August 21, Orthodox Churches on the Old Calendar commemorate the Saints listed on August 8.
Holy Forefathers Abraham, Isaac, and Jacob (ca. 2000 BC)
Apostle Thaddeus of Edessa, one of the Seventy Apostles (44)
Martyr Bassa of Edessa and her sons Theognius, Agapius, and Pistus (305-311)
Saint Sarmean, Catholicos of Kartli, Georgia (774)
Saint Theocleta the Wonderworker, of Asia Minor (840)
Hieromartyrs Romulus, Priest, and the Deacons Donatus and Silvanus, and Martyr Venustus (Romania)
Venerable Alexander of Iconium.
Saint Euprepius of Verona, first Bishop of Verona in the north of Italy (1st century)
Saint Cyriaca (Dominica), a wealthy widow in Rome, she sheltered persecuted Orthodox Christians (249)
Saint Paternus, born in Alexandria, he came to Rome, was arrested in Fondi and was martyred for Orthodoxy there (c. 255)
Saint Privatus, Bishop of Mende in France (260)
Saint Anastasius, a military tribune converted to Orthodoxy on seeing the courage of the young St Agapitus, in Salone, Italy (274)
Saint Quadratus, a Bishop of Utica in North Africa who taught both clergy and laity to confess Christ (3rd century)
Martyrs Luxorius, Cisellus and Camerinus, martyrs in Sardinia beheaded under Diocletian (303)
Saint Sidonius Apollinaris, Bishop of Clermont in France (c. 423-480)