What Happens at the Equinox?
Far from being an arbitrary indicator of the changing seasons, March 20 (March 21 in some years) is significant for astronomical reasons. On March 20, 2014, at precisely 12:57 P.M. EDT, the Sun will cross directly over the Earth's equator. This moment is known as the vernal equinox in the Northern Hemisphere. For the Southern Hemisphere, this is the moment of the autumnal equinox.
Read more: Vernal (Spring) Equinox | Infoplease.com http://www.infoplease.com/spot/riteofspring1.html#ixzz2wSr7haA2
Called Naw-Ruz – "new day" in Persian, the Baha'i New Year has its roots in Persia, where the Baha'i Faith originated in the mid-1800s.