The first day of fall is finally here, and while it still might be a little warm, pumpkin spice lattes and Halloween decorations are sure to give everyone that fall feeling.

While many consider the return of pumpkin spice lattes to menus as the official start of fall, that honor actually belongs to the day of the autumnal equinox, according to NASA .

Monday, Sept. 22, marks the autumnal equinox in 2025.

During the equinox, night and day are the same length, according to NASA. The equinox occurs twice a year, once in the spring and then again in the fall.

When is the autumnal equinox?

The equinox falls on Monday, Sept. 22, at 2:19 p.m. EDT.

When does the equinox usually happen?

The equinox occurs twice a year, once in March and once in September, when the day and night are of equal

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