Nowruz is the day of the spring equinox, when the amount of light and dark is the same during the day. It is the beginning of the year in the Persian calendar. It is usually celebrated on March 21.On September 30, 2009, UNESCO registered Nowruz as an intangible cultural heritage under the official name "International Nowruz Day". The UN General Assembly then listed Nowruz, which has roots in Iran, on its calendar. A document approved by the United Nations General Assembly on February 23, 2010 explains that Nowruz on March 21 originated in Iran more than 3,000 years ago and is celebrated by more than 300 million people today. There is. UN member states celebrated Knowles in 1391 (2012) for the first time in Iran-sponsored UN and UNESCO public places, and UN Secretary-General Ban Ki-moon also sent a message to the celebration .