September Equinox
September 23, 2026 · in 83 days
Next: September Equinox on September 23, 2026
At the September equinox the Sun crosses the celestial equator heading south, so day and night are again nearly equal everywhere on Earth. It marks the start of autumn in the Northern Hemisphere and spring in the Southern, and from here nights grow longer in the north.
The dates are the same worldwide, but which season each one begins depends on your hemisphere: a June solstice that brings summer to the north brings winter to the south. The times shown are the exact global moments in UTC.
Solstices & equinoxes in 2026
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March Equinox
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June Solstice
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in 83 days
September Equinox
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in 173 days
December Solstice
Frequently asked questions
When is the next equinox or solstice?
The next is the September Equinox on September 23, 2026, 83 days from now.
What is an equinox?
An equinox is one of the two moments each year when the Sun sits directly above the equator, so day and night are almost equal in length everywhere on Earth. They fall around 20 March and 22 September.
What is a solstice?
A solstice is one of the two moments each year when the Sun reaches its furthest point north or south, producing the year's longest and shortest days. They fall around 21 June and 21 December.
