Sunset Autumn Equinox 2025 Dates. September 22 at 8:43 a.m., eastern daylight time. Click on the date that interests you to see the lighting map of the earth.
The first day of autumn is in 2025 on september 22 (according to the astronomical definition). New york city the exact moment of the autumnal equinox in 2025 is 22 september, at 14:19:18.
