Fall officially begins at the autumnal equinox, which usually happens around September 21 in the Northern Hemisphere. The term "equinox" comes from the Latin words aequus (equal) and nox (night), to indicate that during the equinox the night and day are equally long.
Autumn is typically known for its harvest themes, vibrant colors, blustery winds, happy pumpkins, and swirling leaves, and it's a favorite season for poets, painters, photographers and romantics.
