Countdown
How many days until September 11?
364
days until September 11
The next September 11 is Saturday, September 11, 2027
Counting down to September 11
There are 364 days until September 11. The next September 11 falls on Saturday, September 11, 2027. This countdown updates automatically every day — bookmark it and check back any time.
The 364 days until September 11, broken down
260
business days
104
weekend days
52
full weeks
0
extra days
That's 260 working days (Monday to Friday) and 104 weekend days — 52 Saturdays and 52 Sundays. Public holidays vary by country, so they aren't deducted.
On September 11 in history
- 1609Henry Hudson explores the river later named after him
- 1922British Mandate over Palestine begins under the League of Nations
- 1973Chilean coup overthrows President Salvador Allende
- 2001Coordinated terrorist attacks strike the United States, killing nearly 3000
Notable world events that happened on September 11 in earlier years.
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