Vernal Equinox (Spring begins)

Date of event: 
Friday, March 20, 2009 - 4:44am
Audience: 
Everybody is welcome to attend! ;-)
Website: 
http://aa.usno.navy.mil/data/docs/EarthSeasons.php

Vernal Equinox, the point where the sun crosses the equator and spring begins (in the northern hemisphere), is at 11:44 UTC (4:44 PDT).