Sizdah Bedar is traditionally held thirteen days after Nowruz.
The name combines sizdah, meaning thirteen, with bedar, commonly understood in the holiday’s name as getting outdoors or leaving the house. Families traditionally spend the day in parks, countryside, gardens, or other outdoor places, often sharing food and playing games.
Sizdah Bedar closes the main Nowruz holiday period in Iran. One familiar custom is taking the sabzeh from the Haft-sin display outdoors and placing it in running water, although practices differ among families and regions.
The event is sometimes described as the thirteenth day of Farvardin rather than simply “thirteen days after.” Both descriptions point to the same traditional date within the Iranian New Year sequence.