First Day Spring 2024 Uk Dates. But did you know there are actually three main definitions for the season coming from astronomy, meteorology and. This date marks the spring equinox in the northern hemisphere.

This date marks the spring equinox in the northern hemisphere. The spring equinox falls on sunday, march 20 at 3.06am this year and marks the first day of spring for those living in the northern hemisphere, including the.