Fall Equinox Date 2025 Usa. — at a precise moment each september, usually on the 22nd or 23rd, the sun is directly above the equator, marking the autumnal equinox. In 2025, the autumnal equinox will take.
— at a precise moment each september, usually on the 22nd or 23rd, the sun is directly above the equator, marking the autumnal equinox. I f you are in the eastern time zone, then fall officially begins at 8:43 a.m., local time.