Autumn Equinox 2025 Uk Calendar. In 2025 the autumnal equinox will occur on 22 september at 18.20 gmt (19.20 bst). Find out the dates, history and traditions of autumnal equinox.

Find out the date when september equinox is in 2025 and count down the days until september equinox with a countdown timer. United kingdom 2025 calendar online and printable for year 2025 with holidays, observances and full moons