Nowruz has been celebrated by people from different ethnic communities and religious backgrounds for thousands of years. It started in Persia in one of the capitals of the Achaemenid Empire in Persis (Fars). It has been registered by UNESCO as The "International Day of Nowruz" a cultural and spiritual heritage of mankind on October 29, 2009. UN General Assembly also registered Nowruz as an Iranian heritage in its calendar. UN General Assembly described it as a festival celebrated for more than 3,000 years. Nowadays more than 300 million people celebrate it all over the world .UN document explained on March 23rd 2010.