Spring Equinox 2025 Usa 2024. The march equinox comes at 11:06 p.m. The times of the solstices mark the beginning of summer and winter.

The times of the equinoxes mark the beginning of spring and fall. The spring equinox, known as the vernal equinox in the northern hemisphere, is a day on which the sun sits directly over the equator, so day and night all over the world are of equal length.