Spring Equinox 2025 Northern Hemisphere Time. Also called the vernal equinox, this is the time of year when (due to the earth’s tilt and orbit) the sun appears to move above the celestial equator in the sky. Autumn begins in the southern hemisphere at the same time.

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. The first day of spring is march 20, 2024, at 5:02 a.m.