On Spring Equinox, Day and Night Equal in Name Only

In the Northern Hemisphere spring officially begins today, the vernal equinox, at 1:26 p.m. ET. Soon trees will bud, snows will melt, and for the next six months daylight will tick more minutes off the clock than darkness.

The reverse is true in the Southern Hemisphere. But whether you are entering the season of light or darkness, don’t be fooled into thinking that on the equinox the length of the day is exactly equal to the length of the night. It’s not.