When Is The Autumnal Equinox 2024. Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst. The autumnal equinox typically takes place on the 22nd or 23rd of september.

This year, it falls on sunday, sept. The autumnal equinox always occurs in september, but its date can shift each year.