Naw-Rúz (Persian: Nowruz ; نور) is the first day of the Bahá'í calendar year and one of nine holy days for adherents of the Bahá'í Faith. It occurs on the vernal equinox, on or near March 21.
Nowruz, historically and in contemporary times, is the celebration of the traditional Iranian new year holiday and is celebrated throughout the countries of the Middle East and Central Asia such as in Iran, Azerbaijan, Turkey, Iraq, Armenia, Georgia, Russia, Afghanistan, Pakistan, Syria, and Tajikistan. Since ancient times it has been a national holiday in Iran and was celebrated by more than one religious group. The Báb, the founder of Bábism, and then Bahá'u'lláh, the founder of the Bahá'í Faith, adopted the day as a holy day and associated it with the Most Great Name of God.
The Báb, the founder of Bábism, instituted the Badí' calendar composed of 19 months, each of 19 days. The first month, and the first day of each month, are both named Bahá, an Arabic word meaning splendour or glory. Thus Naw-Rúz, the first day of the year, is the day of Bahá in the month of Bahá. The day was called the Day of God by the Báb, and was associated with He whom God shall make manifest, a messianic figure in the Báb's writings.