The autumnal equinox heralds the arrival of fall in the northern hemisphere, and it's just around the corner. Here's what to know. Amanda Kooser Freelance writer Amanda C. Kooser covers gadgets ...
The first day of autumn, caused by the fallequinox, happens on Sunday, September 22, 2024. The equinox happens when the sun's rays square up with Earth so the day is about as long as night.