How many days until September 22?
There are calculating until September 22. The next September 22 falls on a calculating.
Updated every second, this live September 22 countdown lets you track the precise time remaining until the autumnal equinox, the arrival of fall, or any personal event or deadline connected to this date.
September 22 date facts
The next September 22 is part of the upcoming year. September 22 typically coincides with the autumnal equinox—the point in the year when the sun crosses the celestial equator and day and night are nearly equal in length, marking the astronomical start of autumn in the Northern Hemisphere.
Why count down to September 22?
September 22 is one of the most astronomically significant dates on the calendar. It falls on or within a day of the autumnal equinox each year—the moment when the sun sits directly above the equator and the Northern Hemisphere begins its official shift from summer into autumn. For anyone attuned to the rhythms of the natural world, this date carries real meaning.
In the United States, late September marks a busy and energetic stretch of the year. Temperatures start dropping across northern and central states, fall foliage begins to appear in New England and the Upper Midwest, and harvest season gets underway. The NFL regular season is in full swing, Hispanic Heritage Month (September 15–October 15) is being celebrated in communities nationwide, and many people are already looking ahead to Halloween, Thanksgiving, and the holiday season beyond.
What happens around September 22?
- The autumnal equinox typically falls on or within one day of September 22, marking the astronomical first day of fall in the Northern Hemisphere.
- Daylight hours shorten noticeably as the Earth’s axis tilts away from the sun.
- Fall foliage begins to peak across New England, the Great Lakes region, and parts of the Appalachian Mountains.
- Hispanic Heritage Month (September 15–October 15) is in full swing, with festivals and cultural events held across the country.
- The NFL regular season draws large crowds and television audiences every weekend.
- Apple orchards, pumpkin patches, and harvest festivals open throughout the U.S.
- The end of the third fiscal quarter prompts business reviews, budget planning, and financial reporting deadlines.
September 22 in the year
In the target year, September 22 is day calculating of the year. After September 22, there are calculating days left in the year—exactly 100 in both regular and leap years, making it a tidy numerical milestone in the calendar.