Days Until December 11th
About December 11th
December 11th is one of 365 days on the calendar — and like every date, it has its own mix of facts, observances, and history. December 11, 1972, marked the last time humans walked on the Moon during the Apollo 17 mission. The countdown below shows how many days remain until the next December 11th, 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
December 11, 1972, marked the last time humans walked on the Moon during the Apollo 17 mission
UNICEF was established on December 11, 1946, to provide relief to children after World War II
The first transatlantic radio transmission was achieved by Guglielmo Marconi in 1901 (sources vary between Dec 11-12)
Thomas Edison created the first strand of electric Christmas lights in December 1880 at his Menlo Park laboratory
International Mountain Day is celebrated on December 11, recognizing mountains' importance to sustainable development
🎊 Traditions & Celebrations
International Mountain Day promotes conservation of mountain ecosystems and sustainable mountain development
Educational programs commemorate the Apollo 17 mission and humanity's achievements in space exploration
UNICEF fundraising events support children's health, nutrition, and education worldwide
Holiday lighting traditions continue Edison's legacy of illuminating celebrations with electric lights
Communities organize events highlighting the importance of protecting mountain environments
📜 Historical Events on This Day
Julian entered Constantinople as sole Roman Emperor after the death of Constantius II
The Prophet Muhammad led an army of 10,000 to conquer Mecca peacefully
Dentist Horace Wells first used nitrous oxide as anesthesia during a dental procedure
Thomas Edison's electric Christmas lights were displayed publicly for the first time
Guglielmo Marconi successfully transmitted radio signals across the Atlantic Ocean
Leonardo da Vinci's 'Mona Lisa' was recovered in Florence, Italy, two years after being stolen from the Louvre
King Edward VIII formally abdicated the British throne
Germany and Italy declared war on the United States, which responded with its own declaration
UNICEF was established by the United Nations to help children affected by World War II
Apollo 17 astronauts Eugene Cernan and Harrison Schmitt became the last humans to walk on the Moon
The Kyoto Protocol opened for signature, committing countries to reduce greenhouse gas emissions
Bernie Madoff was arrested for running a $50 billion Ponzi scheme, the largest financial fraud in U.S. history
Why Count Down to December 11th?
Whether you're planning ahead, celebrating a tradition, or marking a personal milestone, tracking the countdown to December 11th 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