Autumn Equinox 2024 Eastern Time. The autumn equinox happens at the same moment worldwide, so the answer depends on your time zone. The fall equinox and the first day of autumn arrives on sunday, september 22, 2024, at 08:44 a.m.
The autumnal equinox will arrive at 8:43 a.m. In 2024, the autumnal equinox will happen on sunday, sept.