Days Until Autumn Equinox (Northern Hemisphere, approx.)
Days until Autumn Equinox (Northern Hemisphere, approx.)
Exact date varies by 1 day year to year; September 22 used as the common approximation.
About Autumn Equinox (Northern Hemisphere, approx.)
The Northern Hemisphere's autumn equinox, occurring around September 22-23 depending on the year, marks the point when day and night are roughly equal in length worldwide, as the Northern Hemisphere begins tilting away from the Sun toward winter.
Because the precise moment moves around within a roughly two-day window depending on the year, this page anchors its countdown to September 22 as a practical reference point.
In the Southern Hemisphere the same astronomical moment marks the spring equinox instead, another reminder that equinox and solstice names describe a Northern Hemisphere-centric seasonal framing rather than a universal one.
Japan observes a public holiday, Shubun no hi, specifically tied to the autumn equinox, traditionally used for visiting family graves, a distinctly different cultural framing from the equinox's purely astronomical treatment elsewhere.
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