AstronomyTentative

September equinox

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    Photo: Image by Przemyslaw "Blueshade" Idzkiewicz · CC BY-SA 2.0 · via Wikimedia Commons

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    September equinox is provisionally scheduled for Saturday, 22 September 2035. The listed date may change. Check the source for confirmation.

    Sun over the equator again. Harvest in the north.

    The September equinox is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24.

    Summary from Wikipedia (CC BY-SA 4.0)

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    equinoxseasons

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    Source last checked Sep 14, 2026

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