Celebrating Nowruz means the affirmation of life in harmony with nature, awareness of the inseparable link between constructive labour and natural cycles of renewal and a solicitous and respectful attitude towards natural sources of life.
The word Nowruz (Novruz, Navruz, Nooruz, Nevruz, Nauryz), means new day; its spelling and pronunciation may vary by country.
International Nowruz Day was proclaimed by the United Nations General Assembly, in its resolution A/RES/64/253 of 2010, at the initiative of several countries that share this holiday (Afghanistan, Albania, Azerbaijan, the Former Yugoslav Republic of Macedonia, India, Iran (Islamic Republic of), Kazakhstan, Kyrgyzstan, Tajikistan, Turkey and Turkmenistan.
Nowruz marks the first day of spring and is celebrated on the day of the astronomical vernal equinox, which usually occurs on 21 March. It is celebrated as the beginning of the new year by more than 300 million people all around the world and has been celebrated for over 3000 years in the Balkans, the Black Sea Basin, the Caucasus, Central Asia, the Middle East and other regions.
Nowruz plays a significant role in strengthening the ties among peoples based on mutual respect and the ideals of peace and good neighbourliness. Its traditions and rituals reflect the cultural and ancient customs of the civilizations of the East and West, which influenced those civilizations through the interchange of human values.
Source: un.org