How many days until August 21?
There are calculating until August 21. The next August 21 falls on a calculating.
This August 21 countdown refreshes every second, so you can track the precise amount of time remaining before late summer arrives, whether you’re marking a personal milestone, a back-to-school deadline, or any other event tied to this date.
August 21 date facts
The next August 21 lands in the upcoming year. Sitting deep in the heart of summer with just ten days until September, it falls during one of the most transitional stretches of the American calendar—when the warmth of summer is still present but the pace of life is already beginning to shift.
Why count down to August 21?
August 21 holds a meaningful spot on the late-summer calendar for many Americans. It arrives just as the season begins its slow wind-down—schools are reopening across the country, summer vacations are wrapping up, and the routines of fall are starting to take shape. For anyone planning around the end of summer, August 21 makes a natural target date.
The date is also historically significant in the United States. On August 21, 2017, a total solar eclipse swept across the entire continental U.S. from Oregon to South Carolina, earning it the nickname the Great American Eclipse. It was the first coast-to-coast total solar eclipse in 99 years and drew tens of millions of viewers outdoors, making it one of the most-watched astronomical events in American history.
What happens around August 21?
- Back-to-school season is in full swing across most U.S. states, with many districts already in session or just days away from the first day of classes.
- The NFL preseason is underway, giving fans their first look at rosters before the regular season kicks off in September.
- State fairs are running across the Midwest and South, including some of the largest in the country.
- The U.S. Open tennis tournament is approaching, typically beginning in late August at Flushing Meadows in New York.
- National parks and outdoor destinations see some of their heaviest summer visitation as families take final trips before school schedules tighten.
- College move-in days and orientation events are happening at universities throughout the country.
- Summer internships and seasonal jobs are drawing to a close for many students headed back to campus.
August 21 in the year
In the target year, August 21 is day calculating of the year. After August 21, there are calculating days remaining in the year.