Sizdeh Bedar is yet to arrive (13, Farvardin or 2, April). It is the day 13 of the new year in Iran, and people celebrate it by going out doors and having fun. Some travel further; some not, but mostly spend it in natural environments such as parks.
The number 13 is not a good number as they believed, and some yet rather use 12+1 instead of it. I suppose that’s why it is a holiday, and people go out to take the bad luck out of their houses, and by throwing out their Haft Seen’s grass away they illude they throw the bad luck away.
It is also the last day of the holidays and spring break.
