Autumn Equinox 2024 Date Uk. The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd. When is the autumnal equinox in 2024?

The autumn equinox marks the start of the season, meaning it’ll take place on september 22 this year. The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd.