September Equinox 2026 has already passed
You are viewing a historical date page for September Equinox 2026. Use the next available year or the main holiday overview for the latest countdown.
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How many days until September Equinox
September Equinox 2026 falls on September 23, 2026. Review this year holiday date and countdown details.
Wednesday, September 23, 2026 at 8:05 AM GMT+8Northern Hemisphere
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AGO
About September Equinox
The September Equinox brings day and night back into near balance and marks the start of astronomical fall in the Northern Hemisphere. Leaves begin changing color, temperatures ease down, and many places shift into harvest and back-to-school rhythm. In the Southern Hemisphere, this same moment marks the start of spring.
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When Is September Equinox 2026?
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September Equinox 2026 was 47 days ago on Wednesday, September 23, 2026.