Vernal Equinox: Science Behind the First Day of Spring 2016

The first day of spring. The Vernal Equinox: Everything you need to know https://t.co/qwlCEWHUCY

— funnypic (@funnypicRT) March 20, 2016

https://t.co/EykmfI8Hxp

— John B. Crane, III (@lcbsn97) March 20, 2016

Across the Americas, ancient cultures marked the vernal equinox in stunning ways—some of which are still thriving. https://t.co/HGlph68AnB

— National Geographic (@NatGeo) March 17, 2016

Spring is here! Check out the equinox's quirky math https://t.co/OaLcP8KsMx pic.twitter.com/PjGwd65ses

— Fox News (@FoxNews) March 18, 2016