Filaretos’s name day is December 1, the feast of Philaret the Merciful.
Churches that follow the Old (Julian) Calendar keep the same feast on December 14 of the civil calendar. See everything commemorated on December 1.
The saint behind the name
Philaret the Merciful
December 1, Saint, Φιλάρετος ο Ελεήμων
Righteous Philaret lived in the eighth century at Amnia in Paphlagonia, a wealthy landowner who gave to every needy person who came to his door until he had reduced his own household to poverty. His wife and children reproached him, but he continued to give away even his last ox and his last measure of grain, trusting in God.
Name days: Filaretos, Philaretos, Philaret, Filareti
Also celebrating on December 1
These names share the feast, many of them other forms of the same name:
Philaretos, Philaret, Filareti
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.