Sergey 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 Sergey is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| September 25 | Sergius of Radonezh | October 8 |
| October 7 | Sergios and Vakchos | October 20 |
The saints behind the name
Sergius of Radonezh
September 25, Venerable, Σέργιος του Ραντονέζ
St. Sergius was born near Rostov in the early fourteenth century and, as a young man, withdrew with his brother into the forest of Radonezh, where he built a church of the Holy Trinity. The brotherhood that gathered around him became the Trinity Lavra, the spiritual heart of Russia, and his disciples founded monasteries across the land.

Sergios and Vakchos
October 7, Martyr, Σέργιος και Βάκχος
Saints Sergius and Bacchus were high-ranking officers in the Roman army at the end of the third century, secretly Christians and beloved of the emperor. When their faith was discovered they refused to sacrifice to the idols; stripped of their rank, they were paraded in mockery and cruelly tortured. Bacchus died under the blows, and Sergius was afterward beheaded in Syria.
Also celebrating with Sergey
These names share the feast, many of them other forms of the same name:
Sergei, Sergius, Sergios, Serge, Sergio
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.