First Day Of Autumn 2024 Uk Time. In the northern hemisphere, the astronomical start of autumn is on september 23. Here's everything you should know about the fall equinox—plus our.

In 2024, the autumnal equinox will take place on september 22,at 08:44 a.m. The first day of autumn often called fall (september equinox or autumnal equinox) is when the sun shines directly on the celestial equator passing from north to south and the.