When Is The Autumn Equinox 2024 Uk 2024. In the northern hemisphere, the autumnal equinox happens on september 22, 2024, at 12:44 gmt (08:44 a.m. The autumnal equinox occurs in september, and in the northern hemisphere this date marks the end of summer and beginning of autumn.

English heritage is pleased to provide free managed open access to stonehenge autumn. Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the.