St. Acholios, Bishop of Thessaloniki, who baptized Emperor Theodosios the Great.
St. Acholios was Bishop of Thessaloniki in the fourth century. He baptized the Emperor Theodosios the Great in that city in 380, and was praised by St. Ambrose of Milan for his holiness.
He reposed in peace and is commemorated on January 23.
Feast day
On the New Calendar, Acholios of Thessaloniki is commemorated on January 23. Churches on the Old (Julian) Calendar keep the feast on February 5 of the civil calendar.
Also commemorated on January 23

Agathangelos the Martyr
Martyr, Αγαθάγγελος
Holy Martyr Agathangelos, companion of St. Clement of Ankyra.
Name days: Agathangelos, Agathangelus, Agathaggelos
Dionysios of Olympus
Venerable, Διονύσιος ο εν Ολύμπω
Venerable Dionysios of Olympus, founder of the monastery on Mount Olympus.
Salamanes the Silent
Venerable, Σαλαμάνης ο Ησυχαστής
Venerable Salamanes the Hesychast of the Euphrates.