Holy Martyr Diomedes the Unmercenary Physician of Tarsus.
Saint Diomedes was a physician from Tarsus in Cilicia who healed both bodies and souls, bringing many to Christ. He settled in Nicaea, where he was arrested under Diocletian and died on the way to trial.
Tradition relates that the soldiers who beheaded his body were struck blind and healed only when they returned his head to it.
Feast day
On the New Calendar, Diomedes the Physician is commemorated on August 16. Churches on the Old (Julian) Calendar keep the feast on August 29 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Diomidis, Diomedes, Diomedis, Diomedi
Also commemorated on August 16

Translation of Mandylion
Great Feast, Μανδήλιο
Translation of the Not-Made-by-Hands Icon (Mandylion) to Constantinople.
Apostolos the New
Martyr, Απόστολος ο Νέος
Holy New Martyr Apostolos of Agios Lavrentios on Mount Pelion.
Joseph the Hesychast
Venerable, Ιωσήφ ο Ησυχαστής
Venerable Joseph the Hesychast, the Cave-Dweller of Mount Athos.
Gerasimos of Cephalonia (Repose)
Venerable, Γεράσιμος Κεφαλληνίας
Venerable Gerasimos the New Ascetic, protector of Cephalonia, remembered on the day of his repose.
Name days: Gerasimos, Makis, Gerasim, Gerasimoula
Alkiviades the Martyr
Martyr, Αλκιβιάδης
Holy Martyr Alkiviades, who was burned for Christ.
Name days: Alkiviadis, Alkiviades, Alkis