National Ugly Christmas Sweater Day
Wear your most garish knitwear with pride, add some tacky accessories and organize a jumper auction to fundraise for Save the Children.
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December 18 2025 Holidays
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Your guide to celebrating December 18 2025
Skip to all 10 daysThe louder the sweater, the better the party. On December 18, National Ugly Christmas Sweater Day gives you permission to wear the knitwear that jingles, sparkles and makes sensible clothing nervous. Borrow a gloriously garish one, hunt down a secondhand masterpiece, or turn a plain sweater into a festive eyesore with tinsel, old baubles and mismatched mittens. Invite friends to show off their creations, then hold a friendly contest or auction and send the proceeds to a charity.
A party this loud needs snacks that can keep up. Bake Cookies Day is your cue to mix up a favorite batch from scratch, then reach for playful cutters and make sweater-shaped cookies. Decorate them to match the guests: a crooked icing zigzag here, a wildly mismatched pattern there. If one cookie ends up wearing more decorations than its human inspiration, it has understood the assignment.
Bake Cookies Day
Make a batch of your favorite biscuits, experiment with imaginative cookie cutter shapes or organize a bake sale for charity.
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Arrange the finished cookies on a tray and let everyone vote for the loudest edible sweater while the real ones compete nearby. You can also turn the baking into a small charity sale, so the sugar and sequins do some good beyond the party. The final challenge is deciding which deserves the top prize: the sweater with mismatched mittens hanging from it, or the cookie covered in icing that looks suspiciously like tinsel.
National days and holidays on December 18 2025
Bake Cookies Day
Make a batch of your favorite biscuits, experiment with imaginative cookie cutter shapes or organize a bake sale for charity.
- Australia
- Canada
- United Kingdom
- and 1 more
International Migrants Day
Migration has been a courageous expression of the individual’s will to overcome adversity and to live a better life. Today, globalization, together with advances in communications and transportation, has greatly increased the number of people who have the desire and the capacity to move to other places. This new era has...
World Arabic Language Day
Like a melody from a distant land, this language dances with intricate calligraphy, inviting exploration into its rich tapestry.
National Re-Gifting Day
Passing along the fun surprises we can't use — it's recycling with a sprinkle of unexpected joy.
Answer The Telephone Like Buddy The Elf Day
Every December 18, people celebrate a day full of laughter and joy: Answer The Telephone Like Buddy The Elf Day. It's a time when folks everywhere pick up their phones and greet callers with a merry, "Buddy the Elf, what's your favorite color?" This simple act turns an ordinary day...
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National Crime Junkie Day
National Crime Junkie Day brings together fans of true crime stories. These enthusiasts dive into real-life mysteries, exploring the details of criminal cases and the pursuit of justice. The day celebrates this shared interest, offering a chance for people to connect over their fascination with the darker aspects of human...
National Roast Suckling Pig Day
A mouthwatering centerpiece, crispy on the outside, tender inside, its aroma filling the air - a feast fit for a king.
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- China
- Philippines
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Flake Appreciation Day
Flake Appreciation Day celebrates the beauty and uniqueness of snowflakes. This special day highlights how each snowflake is a marvel of nature, with no two flakes being exactly alike. The intricate designs of the snowflakes transform the winter landscape into a magical wonderland, evoking a sense of wonder and tranquility...
National Twin Day
Some people share birthdays, but twins share much more. National Twin Day celebrates this one-of-a-kind connection. Whether they look alike or not, twins often move through life side by side, building a bond that’s hard to explain. From playful mischief to emotional support, their connection runs deep. This special day...
Wear a Plunger on Your Head Day
Wear a Plunger on Your Head Day is as silly as it sounds—and that’s the beauty of it. On this day, people pop a (clean!) plunger on their heads and walk around like it’s completely normal. It flips the script on what’s expected and invites a little harmless chaos. There’s no...
Other holidays on December 18 2025
Zagreb Advent
Zagreb Advent is a magical celebration that transforms Croatia's capital into a winter wonderland. The streets light up with festive decorations, creating a warm and inviting atmosphere. Wooden stalls filled with handmade crafts and delicious treats line the squares, and the air is filled with the scent of mulled wine and...
Artes Mundi
Artes Mundi is an exciting event that brings the world of contemporary art to life in Cardiff, Wales. Established in 2002, this international arts organization shines a spotlight on artists who engage deeply with social reality. Every two years, artists from around the globe gather to share their work, making...
Advent
Advent marks a period of eager anticipation and preparation for Christmas, which celebrates the birth of Jesus Christ. Each year, Advent begins on the fourth Sunday before Christmas, which can fall anywhere between November 27 and December 3, ending on Christmas Eve, December 24. This timing reminds us that the holiday...
Christmas Bird Count Week
Christmas Bird Count Week is exciting for bird enthusiasts and nature lovers. During this week, thousands of volunteers across multiple countries joined forces to count and document bird species. This event is fun and crucial for gathering important data about bird populations. The observations help scientists track bird numbers and...
Saturnalia
Saturnalia, celebrated from December 17 to 23, is a vibrant festival from ancient Rome. It originally honored Saturn, the god of agriculture. Initially a one-day affair, the jubilation soon spread across an entire week due to its immense popularity. The festivity marked the end of the autumn planting season and...
Blue Christmas
While most people are at home opening presents, emergency workers are on duty, ensuring the safety of their communities over the holidays.
Month-long holidays in December
Decembeard
Supporting bowel cancer research through facial hair growth, spreading awareness, and fostering solidarity in the community.
Gift of Sight Month
Our eyes are the windows to the world, and it's essential to cherish them. Protecting your sight is a gift for life.
Operation Santa Paws
Helping furry friends in need, giving a paw up to shelters, and being a voice for those who can't speak for themselves.
National Cat Lovers’ Month
December highlights our feline friends with National Cat Lovers' Month, a time when cat enthusiasts celebrate and deepen their bond with their pets. This special month, celebrated each December, emphasizes the joy and companionship that cats bring into our lives. With over a quarter of U.S. households owning a cat...
Famous birthdays on December 18 2025
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