Cassian 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 Cassian is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| February 29 | John Cassian the Roman | March 13 |
| May 21 | Kassianos the Greek | June 3 |
The saints behind the name

John Cassian the Roman
February 29, Venerable, Ιωάννης Κασσιανός
St. John Cassian the Roman was a monk of the late fourth and early fifth centuries. In his youth he journeyed with his friend Germanos to the monasteries of Palestine and to the great elders of the Egyptian desert, gathering their wisdom, and later he settled in Gaul, near Marseilles, where he founded monasteries for men and for women.
Kassianos the Greek
May 21, Venerable, Κασσιανός ο Έλληνας
Kassianos was a Greek nobleman named Constantine who came to Moscow in the entourage of Sophia Palaiologina. He became a monk at the Ferapontov Monastery and later founded a monastery near Uglich on the Volga.
Also celebrating with Cassian
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.