Sadeh is an ancient Persian festival that is held by Zoroastrians. Sadeh celebrates 50 days beforeNowruz. Sadeh in Persian means “hundred” and refers to one hundred days and nights past the end of summer (or the beginning of long-winter known to start at the end of summer in ancient Persia/Iran). Sadeh is a mid winter festival that was celebrated with grandeur and magnificence in ancient Persia. It was a festivity to honor fire and to defeat the forces of darkness, frost, and cold.