What Is The Fall Equinox 2024 Uk. On the autumn equinox, day and night are of roughly equal length and the nights will become increasingly longer than the days, until the winter solstice. 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.

According to the astronomical autumn, the autumn equinox will signal the start of the season which starts on the 22nd of september 2024. It also marks the time of year when the.