Days Until Fall
Calculate how many days remain until fall begins.
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Enter your values and click Calculate
How It Works
The calculator reads today's date using JavaScript's new Date() and constructs a target Date set to September 22 of the current year — month index 8 since JavaScript months are zero-indexed. If today's date is already past September 22, the year is incremented by one so the countdown always points to the next occurrence. The millisecond difference between the target and now is divided by 86,400,000 (milliseconds per day) and rounded up with Math.ceil so that any partial day is counted as a full remaining day.
Examples
Late Summer
Running the calculator on August 22nd.
Result: Shows approximately 31 days until fall.
Day After Fall Starts
Running the calculator on September 23rd.
Result: Shows approximately 364 days until next fall.
Mid-Winter
Running the calculator on January 15th.
Result: Shows approximately 250 days until fall.
Frequently Asked Questions
When does fall officially begin?
Fall begins on the autumnal equinox, which falls around September 22nd or 23rd each year in the Northern Hemisphere. This calculator uses September 22nd as a consistent fixed approximation.
Is fall the same as autumn?
Yes. Fall and autumn refer to the same season. 'Fall' is the more common term in the US and Canada, while 'autumn' is preferred in the UK and most other English-speaking countries.
Does this work for the Southern Hemisphere?
No. The seasons are reversed south of the equator. In the Southern Hemisphere, autumn begins around March 20th. This calculator is calibrated for the Northern Hemisphere autumnal equinox.