ABSTRACT
Cuppy, Will Among things you might be thinking about today is the vernal equinoxit’s March 21, you know. The vernal equinox is the point at which the sun apparently crosses the celestial equator toward the north, or you can say it is the moment at which this occurs, or you can simply say: “Hooray! Spring is here!” Exactly why the sun does this on March 21 is a long story.
