Autumn Equinox 2024 Uk Calendar. Current dates for the spring and autumn equinox. According to the astronomical autumn, the autumn equinox will signal the start of the season and begin on the 22nd of september 2024.

The astronomical calendar determines the seasons due to the. Autumn 2024 starts on sunday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth’s axis.