Spring Equinox 2024 Usa. In 2024, the vernal equinox occurred on march 19, signaling the start of spring in the northern hemisphere (and fall in the southern hemisphere). The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere.
The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere. Learn why—and let’s celebrate the start of this most glorious season!