AstronomyTentative
September equinox
1829dagen
—hype
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About this moment
There are 1,830 days until September equinox, on Monday, 22 September 2031.
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.
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Last verified Sep 14, 2026
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