Fall Equinox 2025 Time. In 2025, the autumnal (fall) equinox arrives on monday, september 22, marking the official first day of fall. The 2025 september equinox will fall at 18:19 utc (1:19 p.m.
Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the. Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the.
