When Does Fall Start 2024 United States. Here's everything you should know about the fall equinox—plus our. I f you are in the eastern time zone, then fall officially begins at 8:43 a.m., local time.
In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall. I f you are in the eastern time zone, then fall officially begins at 8:43 a.m., local time.