What Day Is The Vernal Equinox In 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 2024 september equinox will fall at 12:44 utc (7:44 a.m.

The vernal equinox happens on march 19, 2024, at 23h06 edt (03h06 gmt, march 20) , marking the astronomical beginning of the spring season in the northern hemisphere and the autumn season. In 2024, the official first day of spring is tuesday, march 19.