Gerri Juanita

When Is Fall Solstice 2024. When is the first day of fall? In 2024 the autumnal equinox will occur on 22 september at 12.44pm gmt (1.44pm bst).

According to the astronomical definition of the seasons, the autumnal equinox also marks the beginning of autumn, which lasts until the winter solstice (december 21 or 22 in the. At a precise moment each september, usually on the 22nd or 23rd, the sun is directly above the equator, marking the autumnal equinox in the northern hemisphere.