Feast of Amurdad

Amurdad, Feast of

July, November, December; seventh day of Amurdad, the fifth Zoroastrian month

The Feast of Amurdad is one of the "sacred name days" in the Zoroastrian religion, where both the day and the month share the name of the same yazata or spiritual being—in this case Amurdad, who presides over plants and is represented by fruits and flowers. Amurdad also stands for immortality.
The Zoroastrian calendar has 12 months of 30 days each, plus five extra days at the end of the year. Because of discrepancies in the calendars used by widely separated Zoroastrian communities around the world, there are now three different calendars in use, and the 7th of Amurdad can fall either in July, November, or December.
Followers of the Zoroastrian religion, which was founded by the prophet Zoroaster (also known as Zarathushtra, who is believed to have lived around 1200 b.c.e.), today live primarily in Iran and northwestern India, although smaller communities exist in Pakistan, Sri Lanka, Canada, the U.S., England, and Australia.

SOURCES:
RelHolCal-2004, p. 67