During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence this year happens on Sunday.

The autumn equinox, which comes around every September for the Northern Hemisphere, marks the official astronomical start of fall. This year, the equinox arrives Sunday, Sept. 22 at 8:44 a.m. Eastern, according to The Farmers' Almanac.

Twice a year, the sun doesn’t play favorites. Everyone on Earth is seemingly on equal status – at least when it comes to the amount of light and dark that they get.