Days Until September 17th
About September 17th
September 17th is one of 365 days on the calendar — and like every date, it has its own mix of facts, observances, and history. September 17th is Constitution Day in the United States, commemorating the signing of the U.S. Constitution in 1787. The countdown below shows how many days remain until the next September 17th, with notes on what the date is known for, the traditions associated with it, and notable events that have happened on this day.
📚 Interesting Facts
September 17th is Constitution Day in the United States, commemorating the signing of the U.S. Constitution in 1787
The Battle of Antietam on this day in 1862 remains the bloodiest single day in American military history
In 1630, the city of Boston, Massachusetts was founded, becoming one of America's oldest and most historic cities
The Camp David Accords were signed on this date in 1978, establishing peace between Egypt and Israel
Saturn's moon Mimas was discovered by William Herschel on September 17, 1789
🎊 Traditions & Celebrations
Constitution Day and Citizenship Day is celebrated in the United States with educational programs about American government
International Country Music Day honors the genre's global influence and the legacy of Hank Williams, born on this day
National Apple Dumpling Day celebrates the classic American dessert with baking events and recipes
Australian Citizenship Day commemorates the importance of Australian citizenship and national identity
National Table Shuffleboard Day celebrates the classic game with tournaments and social events
📜 Historical Events on This Day
The city of Boston, Massachusetts was founded by Puritan colonists
The U.S. Constitution was signed by 39 delegates at the Constitutional Convention in Philadelphia
William Herschel discovered Mimas, a moon of Saturn, using his 'Forty-foot Telescope' in England
The Battle of Antietam, the bloodiest single day in American military history, took place during the Civil War
The Soviet Union invaded Poland during World War II, dividing the country with Nazi Germany
Operation Market Garden began with Allied airborne troops parachuting into the Netherlands
The Camp David Accords were signed by Israel's Menachem Begin and Egypt's Anwar Sadat
The independent trade union Solidarity was established in Poland after weeks of strikes
North Korea and South Korea were both admitted to the United Nations
The Occupy Wall Street movement began in Zuccotti Park, New York City, protesting economic inequality
Why Count Down to September 17th?
Whether you're planning ahead, celebrating a tradition, or marking a personal milestone, tracking the countdown to September 17th helps you prepare and build anticipation. Use CountDay.org to:
- Never miss important dates and plan accordingly
- Build excitement as the day approaches
- Share the countdown with friends and family
- Set reminders and prepare for celebrations
- Track multiple countdowns in one convenient place