Spring Equinox 2024 Southern Hemisphere. The vernal equinox, the astronomical beginning of spring, occurs this year today, tuesday, 19 march, 2024 at 3:06 utc (11:06 pm edt). Edt on march 19 (03:06 utc on march 20) in the northern hemisphere.

When do the four seasons start in 2024—for spring, summer, fall, and winter? According to the astronomical definition of the seasons, the vernal equinox also marks the beginning of spring, which lasts until the summer solstice (june 20 or 21 in the northern hemisphere, december 21 or 22 in the.