Autumnal Equinox 2024 Schedule. The autumnal equinox (in the northern hemisphere) takes place this afternoon (sunday 22nd september 2024) at 13.44 irish summer time (12.44 ut). In 2025 the autumnal equinox will occur on 22 september at 18.20 gmt (19.20 bst).

When is the autumnal equinox in 2025? Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst.