Fall Equinox 2025 Time Usa. The following table shows the dates together with the exact time in which each of the seasons of the year begin. 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.

At the summer solstice, we have the longest day and the shortest night of the year. You can access the dates directly, sorted by year, via the links below: