Complex sentence: Naw-Rúz in the Bahá'í Faith is one of nine holy days for adherents of the Bahá'í Faith worldwide and the first day of the Bahá'í calendar occurring on the vernal equinox, around March 21.
Split into simpler sentences: Naw-Rúz is one of nine holy days for adherents of the Bahá'í Faith worldwide. It is the first day of the Bahá'í calendar, occurring on the vernal equinox around March 21.