Saint Kallinikos, Patriarch of Constantinople and confessor.
Saint Kallinikos was Patriarch of Constantinople at the end of the seventh century. He refused the demand of the Emperor Justinian II to bless the demolition of a church and was later blinded and exiled to Rome by the same emperor.
He reposed in exile and is honoured as a confessor.
Feast day
On the New Calendar, Kallinikos Patriarch of Constantinople is commemorated on August 23. Churches on the Old (Julian) Calendar keep the feast on September 5 of the civil calendar.
Also commemorated on August 23

Irenaeus of Lyons
Hierarch, Ειρηναίος Λουγδούνου
Hieromartyr Irenaeus, Bishop of Lyons, disciple of Saint Polycarp.
Nicholas the Sicilian
Venerable, Νικόλαος ο Σικελιώτης
Venerable Nicholas the Sicilian, ascetic of Mount Neotakos in Euboea.
Thirty-Eight Martyrs of Thrace
Saint, Τριάκοντα Οκτώ Μάρτυρες Θράκης
Holy Thirty-Eight Martyrs who suffered in Thrace.