Fall Equinox 2025 Meaning In English. 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. During march it is springtime in the northern hemisphere and march equinox is called vernal equinox and spring equinox while it is an autumn time in the southern hemisphere and march.

Autumn 2025 starts on monday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth’s axis. Autumn / fall equinox 2025.