Autumnal Equinox 2024 Date

Autumnal Equinox 2024 Date. The autumnal equinox always occurs in september, but its date can shift each year. But are day and night actually equal length today?

While meteorologists like to call fall at the beginning of september, astronomical autumn starts later, on the autumnal equinox. The autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon.