Isidore 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 Isidore is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| February 4 | Isidore of Pelusium | February 17 |
| May 14 | Isidore of Chios | May 27 |
The saints behind the name

Isidore of Pelusium
February 4, Venerable, Ισίδωρος
St. Isidore of Pelusium was an ascetic of Egypt in the fifth century, who lived in monastic retirement near the city of Pelusium at the mouth of the Nile. A man of wide learning and deep devotion to the Holy Scriptures, he revered the teaching of St. John Chrysostom and followed his example of bold and clear instruction.

Isidore of Chios
May 14, Martyr, Ισίδωρος
The Holy Martyr Isidore suffered on the island of Chios in the middle of the third century, during the persecution of Decius. A soldier serving in the imperial fleet, he was denounced as a Christian, and when he refused to sacrifice to the idols he was tortured and beheaded, remaining steadfast in his confession to the end.
Also celebrating with Isidore
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.