Equinox 2025

Equinox 2025. The vernal equinox marks the beginning of astronomical spring, while. The equinoxes occur around march 20 and september 22 each year, corresponding to an equal length of day and night.

Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst. The spring equinox (march 19, 2025) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment of equal night across the.