How many days until Fall?
Astronomical fall in the Northern Hemisphere begins at the September equinox, around September 22–23.
329 days until Fall
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Days
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Hours
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Minutes
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Seconds
Date
Thursday, September 23, 2027
Day of the Week
Thursday
Weeks & Days
47w 0d
Months (approx)
10.8
Business Days
235
Total Days
329
When is Fall?
The start of fall (autumn) is set by the September equinox, an astronomical moment that shifts slightly each year. This page computes it with Jean Meeus’ equinox algorithm rather than using a fixed date.
The September equinox brings roughly equal day and night again as the Sun crosses the celestial equator heading south.
It marks the start of astronomical autumn in the Northern Hemisphere and spring in the Southern Hemisphere.
The September equinox explained
The September equinox marks the moment the Sun crosses the celestial equator heading south, bringing roughly equal day and night and the start of astronomical autumn in the Northern Hemisphere. Meteorological fall, by contrast, always begins on September 1.
After the equinox, the Northern Hemisphere’s days grow shorter than its nights, leading toward the shift back from daylight saving time in early November and on to the December solstice.
Fall dates by year
| Year | Date | Day of the week |
|---|---|---|
| 2027next | September 23 | Thursday |
| 2028 | September 22 | Friday |
| 2029 | September 22 | Saturday |
| 2030 | September 22 | Sunday |
| 2031 | September 23 | Tuesday |
| 2032 | September 22 | Wednesday |
| 2033 | September 22 | Thursday |
Frequently Asked Questions
How many days until Fall?
Fall is on Thursday, September 23, 2027 — that is 329 days away. The live countdown above updates to the exact time remaining in your local time zone.
What day of the week is Fall 2027?
Fall falls on a Thursday in 2027.
Is "fall" the same as "autumn"?
Yes. "Fall" is the common North American term and "autumn" the more traditional term; both name the same season.
What is the autumnal equinox?
It is the September equinox, when the Sun crosses the equator and day and night are nearly equal, marking the astronomical start of fall in the Northern Hemisphere.
When is the first day of fall?
Astronomically it is the September equinox (around September 22–23). Meteorological fall, used by forecasters, starts on September 1.
Related Countdowns
Browse every days-until countdown, set your own countdown timer, count the exact days between any two dates with the days calculator, or open the calendar.