Vicky B Anderson

2025 Equinox Dates. The vernal equinox marks the. Spring equinox 2025 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic.

Everything you need to know about the spring equinox 2025, including when it is, what it is and how it affects our planet. Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst.