Autumn Equinox 2024. In 2024, the first day of fall, also known as the autumnal equinox, is sunday, sept. The first day of fall this year, also known as the autumnal equinox is sunday, sept.


Autumn Equinox 2024

The fall equinox is not on the same day each year, though it always falls. According to the meteorological calendar, the first autumn day is friday 1st september 2024.

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