tale. Traditional important days Main article: Iranian festivals Iranians celeberate the following days based on a Solar calendar, in addition to important religious days of Islamic and Shia calendars, which are based on a lunar calendar. Norouz(Iranian/Persian New Year) Sizdah be dar(Nature Day) Jashn-e-Tirgan(Water Festival) Jashn-e-Sadeh(Fire Festival) Jashn-e-Mehregan(Autumn Festival) Shab-e-Yalda(Winter Feast)