Norouz (Persian: نوروز , various local pronunciations and spellings) is the traditional Iranian new year holiday celebrated in Iran, Turkey, Azerbaijan, Afghanistan, Albania, Georgia, the countries of Central Asia such as Turkmenistan, Tajikistan, Uzbekistan, Kyrgyzstan, and Kazakhstan, as well as among various other Iranian and Turkic people in Iraq, Syria, Pakistan, India, Northwestern China, the Caucasus, the Crimea, and the Balkans.
As well as being a Zoroastrian holiday, it is also a holy day for adherents of Sufism as well as Bahá'í Faith. In Iran it is also referred to as an Eid festival, although it is not an Islamic feast. Shia Nizari Ismaili muslims, who trace their origins to Iran, celebrate the festival under the name Navroz. In their religious protocol, Navroz is officially recognized as an Eid, as with Eid ul-Fitr and Eid ul-Adha, although it involves a distinct set of religious ceremonies.
Norouz marks the first day of spring and the beginning of the Iranian year as well as the beginning of the Bahá'í year. It is celebrated by some communities on March 21st and by others on the day of the astronomical vernal equinox (start of spring in northern hemisphere), which may occur on March 20th, 21st or 22nd