Holy Martyr Neaniskos the Most Wise of Alexandria, who suffered under Diocletian.
Saint Neaniskos was a young Christian of Alexandria renowned for wisdom, who confessed Christ before the governor during the persecution of Diocletian. Tradition relates that he was tortured and beheaded, having proclaimed the faith with great eloquence.
Feast day
On the New Calendar, Neaniskos the Martyr is commemorated on June 10. Churches on the Old (Julian) Calendar keep the feast on June 23 of the civil calendar.
Also commemorated on June 10

Alexander and Antonina, Martyrs
Holy Woman, Αλέξανδρος και Αντωνίνα
Holy Martyrs Antonina the virgin and Alexander the soldier, who suffered together at Constantinople.
Name days: Antonina
Kanides of Cappadocia
Venerable, Κανίδης
Venerable Kanides of Cappadocia, a hermit who lived from youth in a cave.
Theophanes and Pansemne of Antioch
Venerable, Θεοφάνης και Πανσέμνη
Venerable Theophanes of Antioch and Pansemne, the former harlot whom he brought to repentance.
John of Tobolsk
Hierarch, Ιωάννης Μαξίμοβιτς Τομπόλσκ
Saint John Maximovitch, Metropolitan of Tobolsk and all Siberia, missionary and wonderworker.
Silvanus of the Kiev Caves
Venerable, Σιλουανός ο εν Κιέβω
Venerable Silvanus the schemamonk of the Kiev Far Caves.