Iran Yalda night Persian winter solstice celebration, Delijan village, Masal شب یلدا روستای دلیجان

December 20, 2017 (Persian calendar 1396/9/29) Shab-e Yalda ("Yalda night" Persian: شب یلدا‎) or Shab-e Chelleh ("night of forty", Persian: شب چله‎) is an Iranian festival celebrated on the "longest and darkest night of the year," Yalda is a winter solstice celebration. It is known as "Persian solstice celebration". That is, in the night of the Northern Hemisphere's winter solstice. Calendrically, this corresponds to the night of December 20/21 (plusmn