Vernal Equinox 2024 Uk. The spring equinox (as well as autumnal equinox) is the moment when neither of the earth’s hemispheres is inclined towards or away from the sun. The vernal equinox marks the beginning of astronomical spring, where day and night are almost equal in length.

The vernal equinox marks the beginning of astronomical spring, where day and night are almost equal in length. United kingdom equinox and solstice dates.