The spring equinox is Wednesday: 7 things to know about the first day of spring

A brief, scientific guide to the first day of spring.

The vernal equinox is upon us: On Wednesday, March 20, both the Northern and Southern hemispheres will experience an equal amount of daylight. For those of us in the Northern Hemisphere, it marks the beginning of spring, with daylight hours continuing to lengthen until the summer solstice in June. (Google is marking the first day of spring with a Google Doodle.) For those south of the equator, it’s the beginning of autumn. Keep reading Brian Resnick’s article on VOX.