Tomas can be celebrated on 2 feasts in the Orthodox calendar. People keep the feast of the saint they were named for, or the one their family has always kept.
Every feast on which Tomas is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| March 21 | Thomas the Apostle | April 3 |
| October 6 | Thomas the Apostle | October 19 |
The saints behind the name

Thomas the Apostle
March 21, Apostle, Θωμάς
St. Thomas, called the Twin, was one of the Twelve Apostles of the Lord. It was he who said he would not believe unless he touched the wounds of the risen Christ, and who, beholding the Lord eight days after Pascha, made the great confession, my Lord and my God. His honest doubt became for all generations a confirmation of the Resurrection.

Thomas the Apostle
October 6, Apostle, Θωμάς
St. Thomas, called the Twin, was one of the Twelve Apostles. Absent when the risen Christ first appeared to the disciples, he said he would not believe unless he touched the wounds of the Lord; eight days later Christ invited him to do so, and Thomas confessed Him as Lord and God — the clearest confession of the divinity of Christ in the Gospels.
Also celebrating with Tomas
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.