First Day Of Spring 2025 Calendar Uk. The first day of spring in the uk astronomically occurs on the vernal equinox, 20 march 2025. Planning ahead and booking your 2025 family holiday is a good idea especially as most package holidays will be discounted this far in advance.

The spring equinox begins on thursday, march 20, which is the first day of astronomical spring. When is spring begins shown on a calendar.