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When is the autumn equinox?
Thursday, 23 September 2027 · 07:01 BST
The autumn equinox 2027 is on Thursday, 23 September 2027 — that's 352 days from today. It happens at 07:01 BST.
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Happening now
The autumn equinox marks the point where nights start to run longer than days in the northern hemisphere.
How the date is worked out
The moment the Sun crosses the celestial equator heading south — usually 22 or 23 September.
The autumn equinox dates
| Year | Date | Day | Countdown |
|---|---|---|---|
| 2024 | 22 September | Sunday | 2 years ago |
| 2025 | 22 September | Monday | 13 months ago |
| 2026 | 23 September | Wednesday | 13 days ago |
| 2027 | 23 September | Thursday | in 12 months |
| 2028 | 22 September | Friday | in 24 months |
| 2029 | 22 September | Saturday | in 3 years |
| 2030 | 22 September | Sunday | in 4 years |
| 2031 | 23 September | Tuesday | in 5 years |
Frequently asked
How many days until the autumn equinox?
352 days — Thursday, 23 September 2027.
Which day of the week does the autumn equinox fall on in 2027?
Thursday.
Is the autumn equinox always on the same date?
The moment the Sun crosses the celestial equator heading south — usually 22 or 23 September.
When is the autumn equinox in 2028?
Friday, 22 September 2028.
When was the autumn equinox in 2026?
Wednesday, 23 September 2026 — 13 days ago.