Venerable Olbianos, an ascetic who reposed in peace.
The synaxarion records Venerable Olbianos as a monk who lived in asceticism and reposed in peace. He is distinct from the hieromartyr Olbianos of Aneai.
He is commemorated on May 25.
Feast day
On the New Calendar, Olbianos the Venerable is commemorated on May 25. Churches on the Old (Julian) Calendar keep the feast on June 7 of the civil calendar.
Also commemorated on May 25

Third Finding of the Head of John the Baptist
Great Feast, Τρίτη Εύρεσις Κεφαλής Ιωάννου
Third Finding of the Precious Head of John the Baptist.
Dionysios of Milan
Hierarch, Διονύσιος Μεδιολάνων
Saint Dionysios, Bishop of Milan, confessor exiled by the Arians.
Innocent of Kherson
Hierarch, Ιννοκέντιος Χερσώνος
Saint Innocent, Archbishop of Kherson, preacher and defender of Odessa.
Name days: Innokentios, Innocent
Zenobios of Florence
Hierarch, Ζηνόβιος Φλωρεντίας
Saint Zenobios, Bishop of Florence, friend of Saint Ambrose.