Nowruz is the Iranian or Persian New Year celebrated by various ethnic groups worldwide. It is a festival based on the spring equinox which marks the first day of the new year in the Iranian Solar Hijri calendar, on or around 21 March on the Gregorian calendar.

The day of Nowruz has its origins in the Iranian religion of Zoroastrianism and is thus rooted in the traditions of the Iranian peoples; however, it has been celebrated by diverse communities for over 3,000 years in Western Asia, Central Asia, the Caucasus, the Black Sea Basin, the Balkans, and South Asia.[30][31][32][33] Presently, while it is largely a secular holiday for most celebrants and enjoyed by people of several different faiths and backgrounds, Nowruz remains a holy day for Zoroastrians, Bahá?ís and some Muslim communities.