Saint Niphon, Patriarch of Constantinople and ascetic of Mount Athos.
Saint Niphon was a monk of Mount Athos who was twice raised to the patriarchal throne of Constantinople in the late fifteenth century. Deposed by the Ottomans, he served the Church in Wallachia and later returned to the Monastery of Dionysiou, where he lived humbly as a simple monk.
His relics rest at Dionysiou, and he is greatly venerated in both Greece and Romania.
Feast day
On the New Calendar, Niphon Patriarch of Constantinople is commemorated on August 11. Churches on the Old (Julian) Calendar keep the feast on August 24 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on August 11

Euphrosyne
Holy Woman, Ευφροσύνη
Venerable Euphrosyne of Alexandria.
Name days: Efrosyni, Euphrosyne, Frossini
Anastasios and Demetrios of Lesvos
Martyr, Αναστάσιος Πανεράς και Δημήτριος Μπεγιάζης
Holy New Martyrs Anastasios Paneras and Demetrios Begiazis of Lesvos.
Neophytos, Zenon and Companions
Martyr, Νεόφυτος, Ζήνων, Γάιος, Μάρκος, Μακάριος και Γαϊανός
Holy Martyrs Neophytos, Zenon, Gaios, Markos, Makarios and Gaianos.