When Spring 2024 Start. The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere. The spring equinox (march 19, 2024) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment of equal night across.
By the meteorological calendar, spring will always start on 1 march; Spring begins with the vernal equinox, tuesday, march 19, 2024, 11:06 p.m.