Pachomius’s name day is May 21, the feast of Pachomios the New Martyr.
Churches that follow the Old (Julian) Calendar keep the same feast on June 3 of the civil calendar. See everything commemorated on May 21.
The saint behind the name
Pachomios the New Martyr
May 21, Martyr, Παχώμιος ο Νέος
Pachomios was born in Little Russia, captured by the Tatars and sold to a Turk in Ousaki in Asia Minor, where he served for many years without abandoning his faith. Freed, he became a monk on Mount Athos under the elder Joseph.
Also celebrating on May 21
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.