Spring Equinox 2025 Date Uk. The first day of spring (march equinox or vernal equinox) is when the sun shines directly on the. The seasons are defined as spring (march, april, may), summer (june, july, august), autumn (september,.

The spring equinox varies annually but typically takes place between the 20 and 22 march in the united kingdom. There are different dates for the start of the season.