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Days Until September 13th

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September 13th, 2026

Last reviewed on May 7, 2026.

About September 13th

September 13th is one of 365 days on the calendar — and like every date, it has its own mix of facts, observances, and history. September 13th is the 256th day of the year, making it significant in computing as 256 is 2 to the 8th power. The countdown below shows how many days remain until the next September 13th, 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 13th is the 256th day of the year, making it significant in computing as 256 is 2 to the 8th power

Roald Dahl, author of beloved children's books like Charlie and the Chocolate Factory and Matilda, was born on this day in 1916

The famous chocolate entrepreneur Milton S. Hershey, founder of The Hershey Company, was born on September 13, 1857

This date marks the day in 1959 when Luna 2 became the first human-made object to reach the Moon

September 13th is celebrated as International Programmer's Day in recognition of the importance of programmers in the digital age

🎊 Traditions & Celebrations

National Peanut Day is celebrated in the United States, honoring the versatile legume that's technically not a nut but a member of the pea family

Fortune Cookie Day is observed, celebrating the iconic dessert found in Chinese restaurants across America

International Programmer's Day honors the contributions of programmers and software developers worldwide

Roald Dahl Day celebrates the beloved author's birthday with reading events and storytelling activities in schools and libraries

Many tech companies and coding communities organize special events and challenges to celebrate International Programmer's Day

📜 Historical Events on This Day

509 BC

The Temple of Jupiter Optimus Maximus on Rome's Capitoline Hill was dedicated on the ides of September

1609

English explorer Henry Hudson reached the river that would later be named after him, the Hudson River

1759

Battle of the Plains of Abraham: British forces defeated the French near Quebec City in the Seven Years' War

1814

The Battle of Baltimore began during the War of 1812, which inspired Francis Scott Key to write 'The Star-Spangled Banner'

1857

Milton Snavely Hershey, founder of the Hershey Chocolate Company, was born in Pennsylvania

1916

Roald Dahl, beloved children's author, was born in Llandaff, Wales

1959

Soviet spacecraft Luna 2 became the first human-made object to reach the Moon

1971

The four-day revolt at Attica Correctional Facility near Buffalo, New York ended with 39 people killed

1993

The Oslo Accords were signed between Israel and Palestine, marking mutual recognition and groundwork for future peace efforts

1996

Hip hop legend Tupac Shakur died from gunshot wounds suffered in a Las Vegas drive-by shooting

Why Count Down to September 13th?

Whether you're planning ahead, celebrating a tradition, or marking a personal milestone, tracking the countdown to September 13th 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