Holy Martyrs Eusebios and Charalambos, burned for their faith.
Eusebios and Charalambos were Christians who confessed Christ during the persecutions and, according to the synaxarion, were put to death by fire. The place of their martyrdom is not preserved.
They are commemorated on May 31 together with the Martyr Hermias.
Feast day
On the New Calendar, Eusebios and Charalambos is commemorated on May 31. Churches on the Old (Julian) Calendar keep the feast on June 13 of the civil calendar.
Also commemorated on May 31

Eustathios of Constantinople
Hierarch, Ευστάθιος Κωνσταντινουπόλεως
Saint Eustathios, Patriarch of Constantinople.
Petronilla of Rome
Holy Woman, Πετρονίλα
Saint Petronilla, virgin of Rome, honored as a spiritual daughter of the Apostle Peter.
Name days: Petronilla
Five Martyrs of Ascalon
Martyr, Πέντε Μάρτυρες εν Ασκάλωνι
The Five Holy Martyrs who suffered at Ascalon in Palestine.
Co-workers of the Apostle Paul
Apostle, Συνεργοί του Αποστόλου Παύλου
Synaxis of the holy men and women named as fellow-laborers of the Apostle Paul in his epistles.
Hierotheos the New
Hierarch, Ιερόθεος ο Νέος
Hieromartyr Hierotheos the New, who suffered under the Turks.