Theopemptos’s name day is January 5, the feast of Theopemptos.
Churches that follow the Old (Julian) Calendar keep the same feast on January 18 of the civil calendar. See everything commemorated on January 5.
The saint behind the name

Theopemptos
January 5, Martyr, Θεόπεμπτος
St. Theopemptos was a bishop who suffered martyrdom during the persecution of Diocletian at the beginning of the fourth century. Tradition relates that his steadfastness under torture so moved a pagan sorcerer named Theonas that he too confessed Christ, was baptized, and shared in the crown of martyrdom.
Name days: Theopemptos
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.