Picnic in the Park: How This Day Marks the End of Nowruz

Sizdah-Bedar is also believed to be a special day to ask for rain. In ancient Iran, every day had its own name, and belonged to a different ''yazat'' (Zoroastrian deity). The 13th day of month of Farvardin denoted to the deity of rain, Tir, which is depicted as a horse. Sizdah-Bedar is also a day for competitive games, involving horses were often chosen as a victory of a horse represented , the deity of rain.