Autumnal equinox 2025 brings fall to the Northern Hemisphere on Sept. 22

When is the first day of fall in 2025? A carefully worded answer is that on Monday, Sept. 22, at 2:19 p.m. Eastern daylight time (11:19 a.m. Pacific daylight time) autumn begins astronomically in the Northern Hemisphere, and spring in the Southern. A... [4604 chars]