Google Doodle: what is the Vernal Equinox?

Google has released a special doodle to celebrate the first day of Spring











from Weird News - Funny and strange news - How About That http://telegraph.feedsportal.com/c/32726/f/568330/s/4e62e509/sc/15/l/0L0Stelegraph0O0Cnews0Cnewstopics0Chowaboutthat0C121995540CGoogle0EDoodle0Ewhat0Eis0Ethe0EVernal0EEquinox0Bhtml/story01.htm