How Many Days Until Autumn
Astronomical autumn in the northern hemisphere begins at the September equinox, around 22 September.
- Date: Tuesday, 22 September 2026
- Counted in your local time zone — the clock above uses the time on your device.
- Next time after that: 22 September 2027
- In the southern hemisphere this season starts on 20 March 2027 — the dates are half a year apart.
When the counter reaches zero the page says «Happy Autumn!» and, the next day, starts counting to 22 September 2027.