How Many Days Until Fall? Countdown
There are 23 days until September equinox on Wednesday, September 23, 2026. Astronomical fall in the Northern Hemisphere begins at the September equinox — 23 September 2026 at 00:05 UTC. Meteorological fall is already listed on the September 1 page. This timer uses the equinox instant, then shows months, weeks, leftover days, seconds, and decimal months/weeks.
2026–2028 dates
| Year | Date |
|---|---|
| 2026 | Wednesday, September 23 |
| 2027 | Thursday, September 23 |
| 2028 | Friday, September 22 |
Add September equinox to your calendar
How this timer counts
Your timezone dropdown does not move the equinox. It only labels remaining hours locally.
Countdown to fall at the September equinox
After the equinox, nights become longer than days at mid-northern latitudes. US “fall” culture — football, foliage, pumpkin spice — starts in late August for retailers, which is why search volume rises before the equinox.
| Fall definition | 2026 | This site |
|---|---|---|
| Equinox | Sep 23, 00:05 UTC | This page |
| Meteorological | Sep 1 | September 1 page |
| Labor Day | Sep 7 | Cultural marker |
How many days until fall
Labor Day weekend (September 4–7 2026) is the cultural unofficial end of summer. It is not the season change. Halloween is 38 days after the 2026 equinox.
Why this countdown exists
This countdown exists because “How Many Days Until Fall” is a real remaining-days search. September equinox is the civil date people mean. They count to it for the named observance and for travel, school, and plans that share the same morning. The timer uses midnight in the timezone you pick.
When does fall 2026 start?
The September equinox is 23 September 2026, 00:05 UTC.
Is fall a holiday?
No.
September 1 or September 23?
Climate stats vs astronomy. This page is astronomy.