Equinox 2024. The autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon. An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length.


Equinox 2024

Edt with the autumnal equinox, which marks. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.

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