Equinox And Solstice 2024. Spring begins with the vernal equinox, tuesday, march 19, 2024, 11:06 p.m. Equinox means equal day and night (12 hours each).
An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. In the northern hemisphere, the 2024 winter solstice will occur on december 21 at 09:20 gmt (december 21, 04:20 a.m.