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National days, ongoing national weeks and months, and global observances for December 12, 2026. Plus historical events and birthdays.
No celebrations found.
These observances last the full month; this date is part of that month-long celebration.
Showing the first 12 on this date; there are more month-long observances. See the full months list for December.
International and other global observances on this date (may include days, weeks, or months).
Events that occurred on December 12 throughout history
Flying the Bell X-1A, Chuck Yeager becomes the first person to exceed twice the speed of sound.
On the anniversary of Marconi's first transatlantic radio signal, the U.S. military launched the first privately built satellite into orbit around the Earth. OSCAR1 - short for Orbiting Satellite Carrying Amateur Radio - hitched a ride aboard a Discoverer satellite that was launched into orbit by a U.S. military Thor-Agena rocket. The payload orbited the Earth for 22 days sending the message "Hi" by Morse code to approximately 300,000 amateur radio operators tracking OSCAR1. December 12th Celebrated (And Not So Celebrated) Birthdays
