Paisis’s name day is July 12, the feast of Paisios the Athonite.
Churches that follow the Old (Julian) Calendar keep the same feast on July 25 of the civil calendar. See everything commemorated on July 12.
The saint behind the name
Paisios the Athonite
July 12, Venerable, Παΐσιος ο Αγιορείτης
St. Paisios was born in Farasa of Cappadocia in 1924 and grew up in Konitsa in Epirus. After military service he became a monk, living on Mount Athos, at Sinai and finally in the cell of Panagouda near Koutloumousiou, where he received countless pilgrims with discernment and love.
Also celebrating on July 12
These names share the feast, many of them other forms of the same name:
What to say on a name day
The Greek wish is Χρόνια Πολλά (Chronia Polla), “many years.” A call or a short message on the day is what people remember. See name day wishes you can send and what a name day is.