May 20 (Eastern Orthodox liturgics)
- Eastern Orthodox Church calendar - May 21
All fixed commemorations below celebrated on June 2 by Orthodox Churches on the Old Calendar.
For May 20th, Orthodox Churches on the Old Calendar commemorate the Saints listed on May 7.Saints
- Saint Lydia of Thyatira, mentioned in Acts 16:14-15
- Martyrs Thalelaeus the Unmercenary, at Anazarbus in Cilicia, and his companions Alexander and Asterius
- Martyr Asclas of the Thebaid, Egypt
- Sts. Zabulon and Susanna, of Cappadocia and Jerusalem,
- Saint Mark the Hermit
- Holy Martyrs of Mamilla, Jerusalem
- Saint Thalassius the Myrrh-gusher, of Libya
- Saints John, Joseph and Nicetas, monks of Nea Moni on Chios
Pre-Schism Western saints
- Saint Plautilla the Roman, martyr,
- Hieromartyr Baudelius, missionary in France and northern Spain, martyred in Nîmes
- Virgin-martyr Basilla
- Saint Hilary, Bishop of Toulouse in France
- Saint Anastasius, Bishop of Brescia in Lombardy, in Italy
- Saint Austregisilus, Bishop of Bourges and Confessor
- Saint Theodore of Pavia, Bishop of Pavia
- Saint Ethelbert, King of East Anglia in England, martyr
Post-Schism Orthodox saints
- St. Daumantas, prince of Pskov
- Saint Stephen, Abbot of Piperi in Serbia
- New Hieromartyr Pavel Lazarev, martyred on the feast of Pentecost
- Venerable Olympiada Verbetska, Igumenia of Kozelschansk women's monastery of the Nativity of the Mother of God
Other commemorations
- Translation of the holy relics of Saint Nicholas the Wonderworker
- Uncovering of the relics of St. Alexis, Metropolitan of Moscow, Wonderworker
- Repose of Schema-monk Cyriacus of Valaam
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