Autumn Equinox 2026
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Current Local Time
—The autumn equinox in 2026 occurs on September 22–23 at approximately 22:00–00:05 UTC, when day and night are approximately equal in length.
What Is the Autumn Equinox?
The autumn equinox (also called the fall equinox) occurs on September 22-23, 2026 at approximately 22:00-00:05 UTC, when the sun crosses the celestial equator moving north to south. Like the spring equinox, day and night are approximately equal in length — roughly 12 hours each. After this moment, the Northern Hemisphere receives progressively less direct sunlight, and days shorten until the winter solstice.
The same due-east sunrise and due-west sunset property applies on the autumn equinox — the sun sits on the celestial equator, so its rising and setting points align with the cardinal directions worldwide. For the Southern Hemisphere, this date marks the spring equinox — the beginning of longer days and the approach of summer. The date shifts between September 22-23 depending on your timezone, since the equinox is a single global moment that falls on different calendar dates in different places.
FAQ — Autumn Equinox 2026
What date is the autumn equinox in 2026?
The autumn equinox falls on September 22-23, 2026 — the exact date depends on your timezone. In UTC, it occurs around 22:00-00:05 UTC (straddling midnight). For most of the Americas, it's September 22. For Asia and Australia, it's already September 23. The astronomical event is simultaneous globally; only the local calendar date differs.
Which hemisphere experiences autumn on the equinox?
The September equinox marks autumn in the Northern Hemisphere (New York, London, Tokyo) and spring in the Southern Hemisphere (Sydney, Buenos Aires, Cape Town). The terms 'autumn equinox' and 'spring equinox' describe the same event from different hemispheric perspectives. Always specify which hemisphere you're referring to.
Does the sun rise due east on the autumn equinox?
Yes — on the equinox, the sun rises due east and sets due west everywhere on Earth, not just at the equator. This holds for about 2-3 days around the equinox. After the autumn equinox, the sun's rising point shifts south of east in the Northern Hemisphere, and the setting point shifts south of west — signaling the approach of winter.
How quickly do days shorten after the autumn equinox?
The rate depends on your latitude. At 40°N, days shorten by about 2-3 minutes per day around the equinox. By the winter solstice, you've lost about 5 hours of daylight compared to the equinox. At higher latitudes, the change is more dramatic — London loses about 8 hours of daylight between the autumn equinox and winter solstice.
Why does the autumn equinox feel different from the spring equinox?
Even though both equinoxes have roughly equal day and night, they feel different because of seasonal lag. In September, the ground and oceans have absorbed months of summer heat, so temperatures remain warm even as days shorten. In March, the ground is still cold from winter, so temperatures stay cool despite lengthening days. This is why September often feels warmer than March at the same location.
What happens to twilight after the autumn equinox?
As days shorten, twilight periods shift earlier in the evening and later in the morning. The golden hour moves progressively earlier — by the winter solstice at 40°N, golden hour starts around 3:30 PM. Astronomical twilight also shortens, meaning true darkness arrives earlier in the evening. This affects photography planning, astronomy sessions, and outdoor activity scheduling.