National days, ongoing national weeks and months, and global observances for December 15, 2026. Plus historical events and birthdays.
December 15, 2026 celebrates Cat Herders Day, plus 3 more. CAT HERDERS DAY
Read the full story →
Founded in 2015 by National Day Calendar® and DeAnna Bookert, best-selling author and motivational speaker.
Read the full story →Events that occurred on December 15 throughout history
Italo Marchiony receives U.S. patent #746,971 for an ice cream cup mold.
Country music singer Johnny Cash releases his single "Folsom Prison Blues."
The brainchild of Peter Seibert and Earl Eaton, Vail Ski Resort in Eagle County, Colorado opens for operation.
Chris Haney and Scott Abbott begin developing the game Trivial Pursuit. December 15th Celebrated (And Not So Celebrated) Birthdays
Longer-running observances that include this date.
Universal Human Rights Month
Month
Bingo's Birthday Month
Month
Operation Santa Paws | December 1-24th
Month
Learn A Foreign Language Month
Month
National Drunk & Drugged Driving Prevention Month
Month
International Sharps Injury Prevention Awareness Month
Month
Safe Toys And Gifts Month
Month
Spiritual Literacy Month
Month
National Tie Month
Month
National Write A Business Plan Month
Month
Worldwide Food Service Safety Month
Month
Root Vegetables And Exotic Fruit Month
Month
Showing the first 12 — See all months for December.
