Nature Day in Iran

According to Pars Today, the thirteenth of Farvardin each year marks the final day of Nowruz holidays, known as "Sizdah Bedar." In ancient times, after twelve days of celebration and joy symbolizing the twelve months of the year, Iranians would go to gardens and fields on the thirteenth day of Nowruz to spend the last day of the holiday amidst nature, surrounded by greenery, plants, and the flowing waters of springs and streams.

The last day of Iran’s Nowruz holidays is called "Sizdah Bedar"

Nature has long been revered by the people of Iran, who have strived to preserve and keep it clean. The outing of Iranians on the thirteenth day of Nowruz is considered the world’s largest picnic, with the celebrations and special rituals of this day rooted in ancient and historical traditions.

Sizdah Bedar of Iranians is the world’s largest picnic

Throughout various historical periods, Iranians viewed Nowruz as a celebration of creation and the beginning of existence, with its conclusion marked by the thirteenth of Farvardin; a day regarded as highly auspicious and blessed. Iranians also see the observance of the thirteenth day of Nowruz as an act of gratitude for God’s blessings, viewing the revival of nature as a sign of resurrection and the afterlife.

Sizdah Bedar, the day of nature exploration for Iranians 

Iranian ethnic groups celebrate this day with unique rituals based on their regional cultures and customs, including traditions such as tying knots in greenery and tossing greenery into rivers.