Theodoret’s name day is May 17, the feast of Theodoretos of Antioch.
Churches that follow the Old (Julian) Calendar keep the same feast on May 30 of the civil calendar. See everything commemorated on May 17.
The saint behind the name
Theodoretos of Antioch
May 17, Martyr, Θεοδώρητος ο Πρεσβύτερος
Theodoretos was a priest of Antioch who remained at his post when Julian the Apostate confiscated the treasures of the churches. Arrested and tortured for refusing to surrender the sacred vessels and to sacrifice to idols, he was beheaded in 362.
Name days: Theodoritos, Theodoret
Also celebrating on May 17
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.