Holy 80 Martyrs at Byzantium
Feast days
2026
Old calendar
Not kept on this calendar this year.
New calendar
- , commemoration
2027
Old calendar
Not kept on this calendar this year.
New calendar
- , commemoration
Also commemorated on 29 September 2026
- Venerable Kyriakos the Hermit of Palestine († 556)
- Venerable Theophanes the Merciful of Gaza
- Martyrs Dadas, Habeddai, Casdœ or (Kazdoia) of Persia († 4th C)
- Venerable Gudelia of Persia
- Venerable Mary of Palestine
- New Hieromartyr John, Archbishop of Riga († 1934)
- Finding of the Relics of St John, Archbishop and Wonderworker of Shanghai, Western Europe, and San Francisco (1993)
- Martyrdom of Saint Wenceslaus (Václav/Vyacheslav), Prince of the Czech Lands († 935)