Boris’s name day is May 2, the feast of Boris the Baptizer of Bulgaria.
Churches that follow the Old (Julian) Calendar keep the same feast on May 15 of the civil calendar. See everything commemorated on May 2.
The saint behind the name
Boris the Baptizer of Bulgaria
May 2, Apostle, Βόρις-Μιχαήλ ο Ισαπόστολος
Boris ruled Bulgaria in the ninth century and received baptism from Constantinople, taking the name Michael. He led his nobles and people into the Church, welcomed the disciples of Saints Cyril and Methodios, and fostered the Slavonic liturgy and letters.
Name days: Boris
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.