When is the first day of fall in 2024? A carefully worded answer is that on Sunday ... This date (like last March 20) is called an equinox, from the Latin for "equal night," alluding to the fact that day and night are then of equal length worldwide.

Fall weather is soon going to be hitting the Northeast and just in time as the official start to fall — the autumnal equinox — is about to arrive. The fall — or autumnal — equinox can land on Sept. 22 or 23 depending on the year This year,

The exact time of the fall equinox changes slightly each year. This year, the equinox arrives Sept. 22 at 8:43 a.m. Eastern time.