December 11
Holidays and Observances

 Holidays and Observances
(Alphabetical Order)

2026 Daily Holidays that fall on December 11, include:

• Holiday Food Drive for Needy Animals Day 
  

• International Mountain Day

• Kaleidoscope Day 

• Magnum P.I. Day

• National App Day 

• National Have a Bagel Day

• National Noodle Ring Day 

• National Salesperson Day - December 11, 2026

• Official Lost & Found Day - December 11, 2026 (Second Friday in December)

• UNICEF Birthday 

2026 Weekly Holidays that include December 11, are:

• Advent - November 29, 2026 - December 24, 2026

• Computer Science Education Week - December 7-13, 2026 (Always the week of December 9, Birthday of Admiral Grace Murray Hopper)

• Hanukkah - Evening of December 4, 2026, through Evening of December 12, 2026

• Human Rights Week - December 10-17

• Lager Beer Week - December 10-17, 2026

• National Aplastic Anemia & MDS Awareness Week - December 6-12, 2026

• National Hand-Washing Awareness Week - December 6-12, 2026 (First Full Week of December)

• National Influenza Vaccination Week - December 6-12, 2026 (First Full Week of December

• National Older Driver Safety Awareness Week - December 7-11, 2026 (First Week in December)

• Recipe Greetings for the Holidays Week - December 6-12, 2026 (First Full Week of December)

• Tie One on For Safety Campaign - Runs November 26, 2026, through January 1, 2027 (Thanksgiving to New Years Day)

2026 Monthly Holidays that include December 11, are:

• There are too many monthly holidays to include here, so please check out our December Holidays page to see all of the holidays that are celebrated the entire month of December.

NOTE: If a date is a movable holiday, that is different every year, I'll include the year as well as the date rule above. Otherwise, the holiday falls on the same date each year.

Looking for more than a list?
Click here to read our detailed guide: Explore the December Monthly Holidays & Awareness Causes Guide

Astrological Sign

The Astrological Sign for December 11 is Sagittarius.

Birth Flower of the Month

The Birth Flower(s) for the Month for December are:

• Holly/Narcissus - Sweetness, Self-Esteem, Vanity, The Sweetness of whoever receives it

Birthstone

The Birthstone(s) for December is:

• Tanzanite
• Zircon
• Turquoise

Famous Birthdays

• 1889 - Walter Knott, American farmer and businessman who founded Knott's Berry Farm (d. 1981)
• 1904 - Marge, American cartoonist who created Little Lulu (d. 1993)
• 1940 - David Gates, American singer, songwriter, producer and co-lead singer of the group Bread
• 1940 - Donna Mills, American actress and producer (Play Misty for Me, Knots Landing)
• 1944 - Lynda Day George, American actress (Mission Impossible)

Famous Deaths

• 1880 - Oliver Winchester, American businessman who founded the Winchester Repeating Arms Company (b. 1810)
• 1964 - Sam Cooke, American singer and songwriter (You Send Me, Wonderful World, Twistin' the Night Away)
• 2021 - Anne Rice, American author (The Vampire Chronicles) (b. 1941)

Famous Weddings and Divorces

• 1946 - Musician Bill Haley of Bill Haley & His Comets marries Dorothy Crowe
• 2010 - Lead singer of Good Charlotte, Joel Madden marries actress and fashion designer Nicole Richie

Quote of the Day

December 11 is International Mountain Day!

"Thousands of tired, nerve-shaken, over-civilized people are beginning to find out that going to the mountains is going home; that wildness is a necessity"  ~ John Muir

Healthy Diet Habit Tip of the Day 
or a Recipe of the Day

Info. to Come!

Season

December 11th falls within the Fall Season in the Northern Hemisphere.

Fall is full of all things pumpkin, leaves falling, and fun holidays and get-togethers with friends and family as we enter the Holiday Season and celebrate Halloween, and Thanksgiving. With Fall ending on December 20, 2026, it draws us near to Christmas and the New Year celebrated in the winter season!

Check out our Fall Season page for information about Fall, Fall Dates, Major Fall Holidays and Observances, Major Fall Festivals, Fun Facts About Fall, Fall Food Tips, Fall Gardening, Fall Preparation (Cars, Clothes, Garden, Home), Fall Quotes, and Fall Weather info.

Kerry has put together some great information and tips on fall foods: 

• Fall Cooking

• Fall Foods

• Fall Snacks

• Fall Weight Loss Tips

Fall is all about pumpkins, so please also check out our pumpkin pages:

• Pumpkins

• Pumpkin Carving 

• Pumpkin Recipes

If you live in the Southern Hemisphere, this day falls in the Spring Season 

• Spring Weight Loss Tips 

This Day in History

• 1816 - Indiana becomes the 19th U.S. State
• 1907 - A fire almost completely destroys the New Zealand Parliament Buildings
• 1913 - The Mona Lisa painting by Leonardo da Vinci was recovered in Florence, Italy more than two years after it was stolen by the Louvre by Vincenzo Peruggia who was arrested for the theft
• 1917 - During World War I, British General Edmund Allenby enters Jerusalem on foot and declares martial law
• 1934 - The co-founder of Alcoholics Anonymous, Bill Wilson, takes his final drink and enters treatment for the final time
• 1937 - Italy leaves the League of Nations
• 1941 - During World War II, Germany and Italy declare war on the United States after America declares war on Japan after the attack on Pearl Harbor
• 1941 - During World War II, Poland declares war on Japan
• 1941 - During the Battle of Wake Island during World War II, the Imperial Japanese Navy suffers its first loss of surface vessels
• 1946 - The United Nations International Children's Emergency Fund (UNICEF) is established
• 1972 - Apollo 17 is the sixth and final Apollo mission to land on the Moon
• 1980 - The Comprehensive Environmental Response, Compensation, and Liability Act known as the Superfund is enacted by the U.S. Congress
• 1981 - During the Salvadoran Civil War, armed forces in El Salvador kill an estimated 900 civilians 
• 1990 - On Interstate 75 near Calhoun, Tennessee, heavy fog results in several fatal collisions with 12 deaths and 42 people injured
• 2001 - China joins the World Trade Organization (WTO)
• 2008 - Bernard Madoff is arrested and charged with securities fraud in a $50 billion Ponzi scheme
• 2009 - The hit mobile game Angry Birds is released internationally on iOS by Finnish game developer Rovio Entertainment

This Day in Music

• 1961 - Please Mr. Postman by The Marvelettes is the first Motown Record to hit #1 on the Hot 100
• 1973 - Top of the World by The Carpenters is certified Gold
• 1983 - Hard Times is the second single released by Run-D.M.C., a song about financial hardships
• 1988 - The Los Angeles Wiltern Theatre hosts a Roy Orbison tribute concert featuring Don Henley, Tom Petty, Graham Nash and Bonnie Raitt
• 1990 - Led Zeppelin IV is certified Diamond
• 2010 - The Billboard Social 50 chart debuts that ranks artists by popularity on the Social Media platforms Facebook, Twitter, YouTube, Vevo, Myspace and iLike. Rihanna has the top spot followed by Justin Bieber, and Eminem

Above is Roy Orbison singing Only The Lonely

This Day in Sports

• 1866 - Three American yachts, the Fleetwing, Vesta, and the Henrietta with James Gordon Bennett Jr on board, have the first trans-oceanic yacht race across the Atlantic Ocean with the Henrietta winning
• 1934 - The National League votes to permit up to 7, night baseball games per home team
• 1951 - Joe DiMaggio announces his retirement from baseball
• 2002 - National Hockey League player Joe Sakic scores his 500th career goal

Word of the Day from Wiktionary

Wishing You a Great Day Today!