Naw-Rúz 176 B.E.

Naw-Rúz is the first day of the new year. It coincides with the spring equinox in the Northern Hemisphere, which usually occurs on 21 March. Bahá’u’lláh explains that this feast day is to be celebrated on whatever day the sun passes into the constellation of Aries (i.e. the vernal equinox), even should this occur one minute before sunset. Hence Naw-Rúz could fall on 20, 21, or 22 March, depending on the time of the equinox (Notes from The Kitáb-i-Aqdas).