Autumn Equinox 2024 Uk Dates Uk. Autumn equinox 2024 occurs sunday 22 september at 12:44pm (13:44 utc), as this is when the centre of the sun crosses the celestial equator. This year autumn begins on 23 september 2023 and ends on 22 december 2023.
In the northern hemisphere, the closest autumnal equinox will take place on september 22, 2024, at 12:44 gmt (08:44 a.m. It also lists astronomical sunrise and sunset timings on autumnal equinox.