Mihragan
Mihragan
Mihragan is the festival of the Autumnal Equinox, and as such, it should occur exactly six months after the festival of the Vernal Equinox, Jamshed Navaroz, which falls on the first day of the first Zoroastrian month. Because the month is Mihr, it was thought to be more appropriate to celebrate the festival on the day—in this case, the 16th—that bears the same name as the month.
Mihragan is also associated with a legendary ancient event—the day on which the heroic Faridun ascended the throne of Persia after killing the mythical evil ruler Zohak.
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 Mihragan can fall either in February, March, or October according to the Gregorian calendar.
There are only about 100,000 followers of Zoroastrianism today, and most of them live in northwestern India or Iran. Smaller communities exist in Pakistan, Sri Lanka, Canada, the U.S., England, and Australia.
RelHolCal-2004, p. 68