The Zoroastrian festival of Sadeh (Jashan-e Sadeh)
Sadeh is a mid-winter celebration observed by Zoroastrians. It is a deeply religious ancient festival.
   

A woman wearing a
special traditional Zoroastrian dress.
Another Zoroastrian woman welcoming people to the festival.
Even some non-Zoroastrians chose to wear beautiful traditional dresses for the festival.
You can see lots of colors in Iranian traditional dress.
Non-Zoroastrians chose to wear traditional dresses for encouraging Zoroastrian.
Another Iranian traditional dress.
Mobed(The High Priest) Firouz-gari & Miss Khorshidi!!.. :o))
People begin to gather an hour before sunset, a spot near a stream seems to be preferred.
I believe most of them weren't Zoroastrian.
You can find there moslem, jewish, and even Bahá'ís.
The chief preparation is the gathering of wood, and everyone in the community is expected to contribute:'A branch, a branch...! Whoever gives a branch,May God grant his wish!
Whoever does not give a branch,
May God not grant his wish!'
Perhaps there is some connection here with the custom of wishing on candles at birthdays.
Sadeh has a complex history, and two different traditions are to be noted.
By Yazd tradition, it is observed on the 100th day before the Persian
new year (Ashtad Ruz Adur Mah). 'Sadeh' means 100 in Persian. According
to the seasonal calendar, this would place it on Dec 11.
The other day, observed by Kermani Zoroastrians, is the 100th day
after the Gahambar of Ayathrima (Aban Ruz Vohuman Mah), held to be the beginning of winter on Jan 24th.
So many people gathered at that special day!
The lighting of the fire is properly preceeded by a ceremony of blessing for the whole community (Afrinagan-e Do Dahman), and fire litany (Atash Niyayesh).
Iranian are singing a natinal song. ( Ey Iran)