Because of its connexion with Ahura Mazda there are four name-day feasts celebrated during the month. These are
- Ohrmazd Dey — 1 Dey.
- Dey-pa-Adar Dey — 8 Dey.
- Dey-pa-Mihr Dey — 15 Dey.
- Dey-pa-Din Dey — 23 Dey.
Also the gahambar (five-day seasonal festival) of Maidyarem occurs in this month, from 16–20 Dey.
The three Zoroastrian calendars place Dey at different places in the natural year. The present corrolation with the Gregorian calendar is: