Sts. Peter and Paul, bishops of Nicaea and confessors of the holy icons.
St. Peter was bishop of Nicaea in the ninth century and suffered for the veneration of the holy icons under the iconoclast emperors, standing firm as a confessor. St. Paul, likewise bishop of Nicaea, is remembered for his holy life and his defense of Orthodoxy.
Both reposed in peace and are commemorated together on September 10.
Feast day
On the New Calendar, Peter and Paul of Nicaea is commemorated on September 10. Churches on the Old (Julian) Calendar keep the feast on September 23 of the civil calendar.
Also commemorated on September 10

Menodora, Metrodora and Nymphodora
Holy Woman, Μηνοδώρα, Μητροδώρα και Νυμφοδώρα
Holy Virgin Martyrs Menodora, Metrodora and Nymphodora, sisters of Bithynia.
Name days: Menodora, Minodora, Metrodora, Mitrodora, Nymphodora, Nymfodora, Nimfodora
Apelles, Luke and Clement the Apostles
Apostle, Απελλής, Λουκάς και Κλήμης
Holy Apostles Apelles, Luke and Clement of the Seventy.
Isaiah of Kykkos
Venerable, Ησαΐας ο Κύκκου
Venerable Isaiah, hermit and founder of the Kykkos Monastery in Cyprus.