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Fall Equinox Explained: Five Things To Know

The fall equinox is on Monday. Here are five things to know about the start of the new season. By Wyatt Williams • 18 hours ago

Fall Equinox Explained: Five Things To Know

We're breaking out the cozy sweaters and warm beverages, because fall is here. Here are some answers to the most common questions about the beginning of the season.

When does fall start?

The official kickoff time for fall begins with the autumnal equinox, which occurs this year on Monday, September 22, 2025, at 2:19 p.m. EDT in the Northern Hemisphere.

Sweater season is here.

( Photo by Jessica Rinaldi/The Boston Globe via Getty Images )

Why is there an exact time for the beginning of fall?

Twice a year, around March 20 or 21 and Sept. 22

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