About First Day of Autumn
The first day of autumn — the autumn equinox — occurs when the Sun crosses the celestial equator moving southward. Day and night are approximately equal. Meteorological autumn begins on 1 September in the UK, while the astronomical autumn equinox falls around 22 September.
The next First Day of Autumn is on 22 September 2026 — a Tuesday — which is 188 days, approximately 27 weeks or 6.2 months away.
Frequently Asked Questions
How many days until the next First Day of Autumn?
There are 188 days until the next First Day of Autumn on 22 September 2026.
When is the next First Day of Autumn?
The next First Day of Autumn is on 22 September 2026, a Tuesday.
How many weeks until First Day of Autumn?
There are approximately 27 weeks until First Day of Autumn.
How many hours until First Day of Autumn?
There are approximately 4,512 hours until First Day of Autumn.
What day of the week is First Day of Autumn?
The next First Day of Autumn falls on a Tuesday, 22 September 2026.
When is the first day of spring/summer/autumn/winter 2026?
The First Day of Autumn is on 22 September 2026.
What is the difference between meteorological and astronomical seasons?
Meteorological seasons start on the 1st of March, June, September and December. Astronomical seasons are determined by the solstices and equinoxes.