sizdah be-dar in all over homeland

Sizdah Be-dar, stylized as 13 Be-Dar, translated as “thirteenth in outdoors,” officially known as Ruz-e Tabiat, translated as “nature’s day,” is an homeland festival, and part of the Nowruz celebration rituals, held annually on the thirteenth day of Farvardin (the first month of the homeland calendar), during which people spend time picnicking outdoors. It is official holiday in homeland.