First Day of Fall

What does the Autumnal Equinox mean?

From a little googling action I've learned that "it marks the first day of fall, and it's one of two days a year when the sun rises due east and sets due west. It's the only time (other than Spring Equinox) when the sun will pass a person standing on the Equator directly overhead.

First day of fall is TODAY. Bring on the coolers temps, 

the colors, the sweaters and boots!