| January |
| Jan 1 | Sunday | Polar Bear Plunge Day | Observance |
| Jan 2 | Monday | Buffet Day | Observance |
| Jan 2 | Monday | Run It up the Flagpole and See If Anyone Salutes It Day | Observance |
| Jan 2 | Monday | Science Fiction Day | Observance |
| Jan 3 | Tuesday | Fruitcake Toss Day | Observance |
| Jan 3 | Tuesday | Festival of Sleep Day | Observance |
| Jan 4 | Wednesday | Trivia Day | Observance |
| Jan 5 | Thursday | Bird Day | Observance |
| Jan 6 | Friday | Bean Day | Observance |
| Jan 7 | Saturday | Old Rock Day | Observance |
|
| Jan 8 | Sunday | Earths Rotation Day | Observance |
| Jan 9 | Monday | Clean Off Your Desk Day | Observance |
| Jan 9 | Monday | Static Electricity Day | Observance |
| Jan 9 | Monday | Word Nerd Day | Observance |
| Jan 10 | Tuesday | Cut Your Energy Costs Day | Observance |
| Jan 11 | Wednesday | Learn Your Name in Morse Code Day | Observance |
| Jan 12 | Thursday | Marzipan Day | Observance |
| Jan 13 | Friday | Make Your Dreams Come True Day | Observance |
| Jan 14 | Saturday | Organize Your Home Day | Observance |
| Jan 15 | Sunday | Strawberry Ice Cream Day | Observance |
|
| Jan 16 | Monday | Nothing Day | Observance |
| Jan 17 | Tuesday | Benjamin Franklin Day | Observance |
| Jan 17 | Tuesday | Kid Inventors Day | Observance |
| Jan 17 | Tuesday | Ditch New Years Resolution Day | Observance |
| Jan 18 | Wednesday | Thesaurus Day | Observance |
| Jan 19 | Thursday | Tin Can Day | Observance |
| Jan 19 | Thursday | Popcorn Day | Observance |
| Jan 20 | Friday | Penguin Awareness Day | Observance |
| Jan 21 | Saturday | Soup Swap Day | Observance |
| Jan 21 | Saturday | Squirrel Appreciation Day | Observance |
|
| Jan 22 | Sunday | Hot Sauce Day | Observance |
| Jan 23 | Monday | Handwriting Day | Observance |
| Jan 24 | Tuesday | Global Belly Laugh Day | Observance |
| Jan 24 | Tuesday | National Compliment Day | Observance |
| Jan 24 | Tuesday | Macintosh Computer Day | Observance |
| Jan 25 | Wednesday | Opposite Day | Observance |
| Jan 26 | Thursday | Spouses Day | Observance |
| Jan 27 | Friday | Chocolate Cake Day | Observance |
| Jan 27 | Friday | Fun at Work Day | Observance |
| Jan 28 | Saturday | Data Privacy Day | Observance |
|
| Jan 29 | Sunday | Puzzle Day | Observance |
| Jan 30 | Monday | Croissant Day | Observance |
| Jan 31 | Tuesday | Backwards Day | Observance |
| February |
| Feb 2 | Thursday | Day of the Crepe | Observance |
| Feb 2 | Thursday | Play Your Ukulele Day | Observance |
| Feb 3 | Friday | Work Naked Day | Observance |
| Feb 3 | Friday | Carrot Cake Day | Observance |
| Feb 4 | Saturday | Eat Ice Cream for Breakfast Day | Observance |
| Feb 4 | Saturday | Thank Your Mailman Day | Observance |
| Feb 4 | Saturday | Create a Vacuum Day | Observance |
| Feb 4 | Saturday | Stuffed Mushroom Day | Observance |
| Feb 5 | Sunday | National Weatherpersons Day | Observance |
| Feb 5 | Sunday | Chocolate Fondue Day | Observance |
| Feb 6 | Monday | Lame Duck Day | Observance |
| Feb 7 | Tuesday | e Day | Observance |
| Feb 7 | Tuesday | Send a Card to a Friend Day | Observance |
| Feb 8 | Wednesday | Laugh and Get Rich Day | Observance |
| Feb 9 | Thursday | Toothache Day | Observance |
| Feb 9 | Thursday | Bagel and Lox Day | Observance |
| Feb 10 | Friday | Umbrella Day | Observance |
| Feb 11 | Saturday | Make a Friend Day | Observance |
| Feb 11 | Saturday | Dont Cry Over Spilled Milk Day | Observance |
| Feb 12 | Sunday | Darwin Day | Observance |
| Feb 13 | Monday | Clean Out Your Computer Day | Observance |
| Feb 13 | Monday | World Radio Day | Observance |
| Feb 14 | Tuesday | Ferris Wheel Day | Observance |
| Feb 14 | Tuesday | Library Lovers Day | Observance |
| Feb 15 | Wednesday | Gumdrop Day | Observance |
| Feb 16 | Thursday | Do a Grouch a Favor Day | Observance |
| Feb 17 | Friday | Random Act of Kindness Day | Observance |
| Feb 18 | Saturday | Battery Day | Observance |
| Feb 19 | Sunday | Chocolate Mint Day | Observance |
| Feb 22 | Wednesday | Single Tasking Day | Observance |
| Feb 22 | Wednesday | Be Humble Day | Observance |
| Feb 23 | Thursday | International Dog Biscuit Appreciation Day | Observance |
| Feb 24 | Friday | Tortilla Chip Day | Observance |
| Feb 25 | Saturday | World Sword Swallowers Day | Observance |
| Feb 26 | Sunday | Pistachio Day | Observance |
| Feb 26 | Sunday | Tell a Fairy Tale Day | Observance |
| Feb 27 | Monday | No Brainer Day | Observance |
| Feb 28 | Tuesday | Public Sleeping Day | Observance |
| March |
| Mar 1 | Wednesday | World Compliment Day | Observance |
| Mar 1 | Wednesday | Plan a Solo Vacation Day | Observance |
| Mar 2 | Thursday | Old Stuff Day | Observance |
| Mar 3 | Friday | I Want You to be Happy Day | Observance |
| Mar 4 | Saturday | March Forth and Do Something Day | Observance |
| Mar 5 | Sunday | Learn What Your Name Means Day | Observance |
| Mar 5 | Sunday | Cinco de Marcho | Observance |
| Mar 6 | Monday | Dentists Day | Observance |
| Mar 7 | Tuesday | Alexander Graham Bell Day | Observance |
| Mar 8 | Wednesday | Proofreading Day | Observance |
| Mar 10 | Friday | Mario Day | Observance |
| Mar 11 | Saturday | Oatmeal Nut Waffle Day | Observance |
| Mar 12 | Sunday | Alfred Hitchcock Day | Observance |
| Mar 13 | Monday | Napping Day | Observance |
| Mar 13 | Monday | Jewel Day | Observance |
| Mar 14 | Tuesday | Pi Day | Observance |
| Mar 15 | Wednesday | Everything You Think is Wrong Day | Observance |
| Mar 16 | Thursday | Absolutely Incredible Kid Day | Observance |
| Mar 16 | Thursday | Every Thing You Do is Right Day | Observance |
| Mar 17 | Friday | Submarine Day | Observance |
| Mar 18 | Saturday | Awkward Moments Day | Observance |
| Mar 19 | Sunday | Lets Laugh Day | Observance |
| Mar 20 | Monday | World Storytelling Day | Observance |
| Mar 20 | Monday | Proposal Day | Observance |
| Mar 21 | Tuesday | Common Courtesy Day | Observance |
| Mar 22 | Wednesday | International Goof Off Day | Observance |
| Mar 23 | Thursday | World OK Day | Observance |
| Mar 23 | Thursday | Puppy Day | Observance |
| Mar 23 | Thursday | Near Miss Day | Observance |
| Mar 24 | Friday | Chocolate Covered Raisins Day | Observance |
| Mar 25 | Saturday | Eat a Waffle Day | Observance |
| Mar 25 | Saturday | Tolkien Reading Day | Observance |
| Mar 26 | Sunday | Make Up Your Own Holiday Day | Observance |
| Mar 27 | Monday | Spanish Paella Day | Observance |
| Mar 28 | Tuesday | Something on a Stick Day | Observance |
| Mar 29 | Wednesday | Smoke and Mirrors Day | Observance |
| Mar 30 | Thursday | Take a Walk in the Park Day | Observance |
| Mar 31 | Friday | Bunsen Burner Day | Observance |
| April |
| Apr 3 | Monday | World Party Day | Observance |
| Apr 4 | Tuesday | Tell a Lie Day | Observance |
| Apr 5 | Wednesday | Read a Road Map Day | Observance |
| Apr 5 | Wednesday | First Contact Day | Observance |
| Apr 6 | Thursday | Sorry Charlie Day | Observance |
| Apr 7 | Friday | Walk to Work Day | Observance |
| Apr 10 | Monday | Siblings Day | Observance |
| Apr 11 | Tuesday | Be Kind to Lawyers Day | Observance |
| Apr 11 | Tuesday | Barbershop Quartet Day | Observance |
| Apr 12 | Wednesday | Grilled Cheese Day | Observance |
| Apr 12 | Wednesday | Yuris Night | Observance |
| Apr 13 | Thursday | Scrabble Day | Observance |
| Apr 14 | Friday | International Moment of Laughter Day | Observance |
| Apr 14 | Friday | Reach as High as You Can Day | Observance |
| Apr 14 | Friday | Look up the Sky Day | Observance |
| Apr 16 | Sunday | Eggs Benedict Day | Observance |
| Apr 16 | Sunday | Wear Pajamas to Work Day | Observance |
| Apr 17 | Monday | Haiku Poetry Day | Observance |
| Apr 18 | Tuesday | Columnist Day | Observance |
| Apr 20 | Thursday | Look Alike Day | Observance |
| Apr 22 | Saturday | Jelly Bean Day | Observance |
| Apr 23 | Sunday | Take a Chance Day | Observance |
| Apr 23 | Sunday | Impossible Astronaut Day | Observance |
| Apr 23 | Sunday | Lovers Day | Observance |
| Apr 25 | Tuesday | DNA Day | Observance |
| Apr 26 | Wednesday | Pretzel Day | Observance |
| Apr 26 | Wednesday | Richter Scale Day | Observance |
| Apr 27 | Thursday | Take Our Daughters and Sons to Work Day | Observance |
| Apr 29 | Saturday | Astronomy Day 1st | Observance |
| Apr 29 | Saturday | Zipper Day | Observance |
| Apr 30 | Sunday | World Pinhole Photography Day | Observance |
| Apr 30 | Sunday | Honesty Day | Observance |
| May |
| May 4 | Thursday | Star Wars Day | Observance |
| May 5 | Friday | No Pants Day | Observance |
| May 5 | Friday | Space Day | Observance |
| May 6 | Saturday | Herb Day | Observance |
| May 6 | Saturday | Free Comic Book Day | Observance |
| May 6 | Saturday | Beverage Day | Observance |
| May 9 | Tuesday | Europe Day | Observance |
| May 9 | Tuesday | Lost Sock Memorial Day | Observance |
| May 10 | Wednesday | National School Nurse Day | Observance |
| May 10 | Wednesday | Clean Up Your Room Day | Observance |
| May 11 | Thursday | Twilight Zone Day | Observance |
| May 11 | Thursday | Eat What You Want Day | Observance |
| May 12 | Friday | Limerick Day | Observance |
| May 13 | Saturday | Frog Jumping Day | Observance |
| May 14 | Sunday | Dance Like a Chicken Day | Observance |
| May 15 | Monday | Chocolate Chip Day | Observance |
| May 17 | Wednesday | Pack Rat Day | Observance |
| May 18 | Thursday | No Dirty Dishes Day | Observance |
| May 19 | Friday | Pizza Party Day | Observance |
| May 19 | Friday | May Ray Day | Observance |
| May 20 | Saturday | Be a Millionaire Day | Observance |
| May 21 | Sunday | Talk Like Yoda Day | Observance |
| May 22 | Monday | Buy a Musical Instrument Day | Observance |
| May 24 | Wednesday | Scavenger Hunt Day | Observance |
| May 25 | Thursday | Sing Out Day | Observance |
| May 25 | Thursday | Towel Day | Observance |
| May 26 | Friday | World Lindy Hop Day | Observance |
| May 27 | Saturday | Sun Screen Day | Observance |
| May 28 | Sunday | Hamburger Day | Observance |
| May 29 | Monday | Put a Pillow on Your Fridge Day | Observance |
| May 30 | Tuesday | My Buckets Got a Hole Day | Observance |
| May 31 | Wednesday | Macaroon Day | Observance |
| June |
| Jun 1 | Thursday | Say Something Nice Day | Observance |
| Jun 2 | Friday | National Doughnut Day | Observance |
| Jun 2 | Friday | Leave the Office Early Day | Observance |
| Jun 3 | Saturday | Repeat Day | Observance |
| Jun 4 | Sunday | Hug Your Cat Day | Observance |
| Jun 6 | Tuesday | Drive In Movie Day | Observance |
| Jun 7 | Wednesday | VCR Day | Observance |
| Jun 8 | Thursday | Best Friends Day | Observance |
| Jun 9 | Friday | Donald Duck Day | Observance |
| Jun 10 | Saturday | Iced Tea Day | Observance |
| Jun 11 | Sunday | Corn on the Cob Day | Observance |
| Jun 12 | Monday | Red Rose Day | Observance |
| Jun 13 | Tuesday | Sewing Machine Day | Observance |
| Jun 14 | Wednesday | Bourbon Day | Observance |
| Jun 15 | Thursday | Nature Photography Day | Observance |
| Jun 16 | Friday | Bloomsday | Observance |
| Jun 17 | Saturday | World Juggling Day | Observance |
| Jun 17 | Saturday | Eat Your Vegetables Day | Observance |
| Jun 18 | Sunday | International Picnic Day | Observance |
| Jun 19 | Monday | Sauntering Day | Observance |
| Jun 21 | Wednesday | Daylight Appreciation Day | Observance |
| Jun 22 | Thursday | Onion Ring Day | Observance |
| Jun 23 | Friday | Take Your Dog to Work Day | Observance |
| Jun 23 | Friday | Typewriter Day | Observance |
| Jun 24 | Saturday | Swim a Lap Day | Observance |
| Jun 25 | Sunday | Please Take my Children to Work Day | Observance |
| Jun 26 | Monday | Chocolate Pudding Day | Observance |
| Jun 27 | Tuesday | Helen Keller Day | Observance |
| Jun 28 | Wednesday | Tau Day | Observance |
| Jun 29 | Thursday | Camera Day | Observance |
| Jun 30 | Friday | Meteor Watch Day | Observance |
| July |
| Jul 1 | Saturday | International Joke Day | Observance |
| Jul 2 | Sunday | I Forgot Day | Observance |
| Jul 2 | Sunday | World UFO Day | Observance |
| Jul 3 | Monday | Compliment Your Mirror Day | Observance |
| Jul 3 | Monday | International Plastic Bag Free Day | Observance |
| Jul 4 | Tuesday | Sidewalk Egg Frying Day | Observance |
| Jul 5 | Wednesday | Workaholics Day | Observance |
| Jul 6 | Thursday | World Kissing Day | Observance |
| Jul 7 | Friday | Tell the Truth Day | Observance |
| Jul 8 | Saturday | Video Games Day | Observance |
| Jul 8 | Saturday | Math 20 Day | Observance |
| Jul 9 | Sunday | Sugar Cookie Day | Observance |
| Jul 10 | Monday | Teddy Bears Picnic Day | Observance |
| Jul 10 | Monday | Clerihew Day | Observance |
| Jul 11 | Tuesday | Cheer Up the Lonely Day | Observance |
| Jul 12 | Wednesday | Simplicity Day | Observance |
| Jul 13 | Thursday | Embrace Your Geekness Day | Observance |
| Jul 14 | Friday | Pandemonium Day | Observance |
| Jul 15 | Saturday | Gummi Worm Day | Observance |
| Jul 16 | Sunday | Corn Fritters Day | Observance |
| Jul 16 | Sunday | Ice Cream Day | Observance |
| Jul 17 | Monday | Yellow Pig Day | Observance |
| Jul 17 | Monday | World Emoji Day | Observance |
| Jul 18 | Tuesday | Insurance Nerd Day | Observance |
| Jul 18 | Tuesday | Caviar Day | Observance |
| Jul 19 | Wednesday | Stick Out Your Tongue Day | Observance |
| Jul 20 | Thursday | Space Exploration Day | Observance |
| Jul 21 | Friday | Junk Food Day | Observance |
| Jul 22 | Saturday | Pi Approximation Day | Observance |
| Jul 23 | Sunday | Vanilla Ice Cream Day | Observance |
| Jul 24 | Monday | Cousins Day | Observance |
| Jul 25 | Tuesday | Culinarians Day | Observance |
| Jul 26 | Wednesday | Uncle and Aunt Day | Observance |
| Jul 27 | Thursday | Take your Pants for a Walk Day | Observance |
| Jul 28 | Friday | Milk Chocolate Day | Observance |
| Jul 29 | Saturday | Lasagna Day | Observance |
| Jul 30 | Sunday | National Cheesecake Day | Observance |
| Jul 31 | Monday | Uncommon Musical Instrument Day | Observance |
| August |
| Aug 1 | Tuesday | Girlfriends Day | Observance |
| Aug 2 | Wednesday | Ice Cream Sandwich Day | Observance |
| Aug 3 | Thursday | Watermelon Day | Observance |
| Aug 4 | Friday | International Beer Day | Observance |
| Aug 4 | Friday | Single Working Womens Day | Observance |
| Aug 5 | Saturday | Work Like a Dog Day | Observance |
| Aug 6 | Sunday | Sisters Day | Observance |
| Aug 6 | Sunday | Fresh Breath Day | Observance |
| Aug 7 | Monday | Lighthouse Day | Observance |
| Aug 8 | Tuesday | Happiness Happens Day | Observance |
| Aug 9 | Wednesday | Book Lovers Day | Observance |
| Aug 10 | Thursday | Lazyload Day | Observance |
| Aug 11 | Friday | Son and Daughter Day | Observance |
| Aug 12 | Saturday | Middle Child Day | Observance |
| Aug 13 | Sunday | Left Handers Day | Observance |
| Aug 14 | Monday | Creamsicle Day | Observance |
| Aug 15 | Tuesday | Relaxation Day | Observance |
| Aug 16 | Wednesday | Tell a Joke Day | Observance |
| Aug 17 | Thursday | Thrift Shop Day | Observance |
| Aug 18 | Friday | Mail Order Catalog Day | Observance |
| Aug 19 | Saturday | World Photo Day | Observance |
| Aug 20 | Sunday | Chocolate Pecan Pie Day | Observance |
| Aug 21 | Monday | Spumoni Day | Observance |
| Aug 22 | Tuesday | Be An Angel Day | Observance |
| Aug 23 | Wednesday | Ride Like the Wind Day | Observance |
| Aug 24 | Thursday | Pluto Demoted Day | Observance |
| Aug 25 | Friday | Kiss and Make up Day | Observance |
| Aug 26 | Saturday | Dog Appreciation Day | Observance |
| Aug 27 | Sunday | The Duchess Who Wasnt Day | Observance |
| Aug 28 | Monday | Bow Tie Day | Observance |
| Aug 29 | Tuesday | According to Hoyle Day | Observance |
| Aug 30 | Wednesday | Frankenstein Day | Observance |
| Aug 31 | Thursday | Eat Outside Day | Observance |
| September |
| Sep 1 | Friday | Emma Nutt Day | Observance |
| Sep 1 | Friday | No Rhyme or Reason Day | Observance |
| Sep 2 | Saturday | Bison Ten Yell Day | Observance |
| Sep 3 | Sunday | Skyscraper Day | Observance |
| Sep 4 | Monday | Eat an Extra Dessert Day | Observance |
| Sep 5 | Tuesday | Be Late for Something Day | Observance |
| Sep 5 | Tuesday | Cheese Pizza Day | Observance |
| Sep 6 | Wednesday | Fight Procrastination Day | Observance |
| Sep 6 | Wednesday | Read a Book Day | Observance |
| Sep 7 | Thursday | Salami Day | Observance |
| Sep 8 | Friday | Pardon Day | Observance |
| Sep 9 | Saturday | Teddy Bear Day | Observance |
| Sep 10 | Sunday | Swap Ideas Day | Observance |
| Sep 11 | Monday | Make Your Bed Day | Observance |
| Sep 12 | Tuesday | Chocolate Milkshake Day | Observance |
| Sep 13 | Wednesday | Positive Thinking Day | Observance |
| Sep 13 | Wednesday | Roald Dahl Day | Observance |
| Sep 14 | Thursday | Hug Your Hound Day | Observance |
| Sep 15 | Friday | Make a Hat Day | Observance |
| Sep 16 | Saturday | National CleanUp Day | Observance |
| Sep 16 | Saturday | Batman Day | Observance |
| Sep 16 | Saturday | Collect Rocks Day | Observance |
| Sep 16 | Saturday | World Guacamole Day | Observance |
| Sep 17 | Sunday | International Country Music Day | Observance |
| Sep 18 | Monday | Rice Krispie Treat Day | Observance |
| Sep 19 | Tuesday | National Gymnastics Day | Observance |
| Sep 19 | Tuesday | International Talk Like a Pirate Day | Observance |
| Sep 20 | Wednesday | Punch Day | Observance |
| Sep 21 | Thursday | Miniature Golf Day | Observance |
| Sep 22 | Friday | Hobbit Day | Observance |
| Sep 22 | Friday | Astronomy Day 2nd | Observance |
| Sep 23 | Saturday | Checkers Day | Observance |
| Sep 24 | Sunday | Punctuation Day | Observance |
| Sep 25 | Monday | Comic Book Day | Observance |
| Sep 26 | Tuesday | Love Note Day | Observance |
| Sep 27 | Wednesday | Crush a Can Day | Observance |
| Sep 28 | Thursday | Ask a Stupid Question Day | Observance |
| Sep 28 | Thursday | Good Neighbor Day | Observance |
| Sep 30 | Saturday | Hot Mulled Cider Day | Observance |
| October |
| Oct 1 | Sunday | International Coffee Day | Observance |
| Oct 1 | Sunday | Balloons Around the World Day | Observance |
| Oct 2 | Monday | Phileas Fogg Wager Day | Observance |
| Oct 4 | Wednesday | Taco Day | Observance |
| Oct 5 | Thursday | Chic Spy Day | Observance |
| Oct 6 | Friday | World Smile Day | Observance |
| Oct 6 | Friday | Mad Hatter Day | Observance |
| Oct 7 | Saturday | Card Making Day | Observance |
| Oct 7 | Saturday | Frappé Day | Observance |
| Oct 8 | Sunday | Pierogi Day | Observance |
| Oct 9 | Monday | Curious Events Day | Observance |
| Oct 10 | Tuesday | Handbag Day | Observance |
| Oct 11 | Wednesday | Its My Party Day | Observance |
| Oct 12 | Thursday | Old Farmers Day | Observance |
| Oct 13 | Friday | International Skeptics Day | Observance |
| Oct 15 | Sunday | I Love Lucy Day | Observance |
| Oct 16 | Monday | National Clean Out Your Virtual Desktop Day | Observance |
| Oct 16 | Monday | Dictionary Day | Observance |
| Oct 17 | Tuesday | Wear Something Gaudy Day | Observance |
| Oct 18 | Wednesday | Chocolate Cupcake Day | Observance |
| Oct 20 | Friday | International Sloth Day | Observance |
| Oct 21 | Saturday | International Observe the Moon Night | Observance |
| Oct 21 | Saturday | Sweetest Day | Observance |
| Oct 21 | Saturday | Count your Buttons Day | Observance |
| Oct 22 | Sunday | Caps Lock Day | Observance |
| Oct 23 | Monday | World Mole Day | Observance |
| Oct 24 | Tuesday | Bologna Day | Observance |
| Oct 25 | Wednesday | Sourest Day | Observance |
| Oct 26 | Thursday | Howl at the Moon Day and Night | Observance |
| Oct 27 | Friday | American Beer Day | Observance |
| Oct 28 | Saturday | International Animation Day | Observance |
| Oct 29 | Sunday | Internet Day | Observance |
| Oct 30 | Monday | Candy Corn Day | Observance |
| Oct 31 | Tuesday | Halloween | Observance |
| Oct 31 | Tuesday | Magic Day | Observance |
| November |
| Nov 1 | Wednesday | Authors Day | Observance |
| Nov 2 | Thursday | Men Make Dinner Day | Observance |
| Nov 2 | Thursday | Deviled Eggs Day | Observance |
| Nov 3 | Friday | World Sandwich Day | Observance |
| Nov 4 | Saturday | Common Sense Day | Observance |
| Nov 5 | Sunday | Zero Tasking Day | Observance |
| Nov 6 | Monday | Saxophone Day | Observance |
| Nov 7 | Tuesday | Bittersweet Chocolate with Almonds Day | Observance |
| Nov 8 | Wednesday | Tongue Twister Day | Observance |
| Nov 9 | Thursday | Chaos Never Dies Day | Observance |
| Nov 10 | Friday | Forget Me Not Day | Observance |
| Nov 10 | Friday | Vanilla Cupcake Day | Observance |
| Nov 11 | Saturday | Origami Day | Observance |
| Nov 12 | Sunday | Happy Hour Day | Observance |
| Nov 13 | Monday | World Kindness Day | Observance |
| Nov 13 | Monday | Sadie Hawkins Day | Observance |
| Nov 14 | Tuesday | Spicy Guacamole Day | Observance |
| Nov 14 | Tuesday | Pickle Day | Observance |
| Nov 15 | Wednesday | Clean Out Your Refrigerator Day | Observance |
| Nov 16 | Thursday | Use Less Stuff Day | Observance |
| Nov 16 | Thursday | Fast Food Day | Observance |
| Nov 17 | Friday | Take A Hike Day | Observance |
| Nov 18 | Saturday | Push Button Phone Day | Observance |
| Nov 20 | Monday | National Absurdity Day | Observance |
| Nov 21 | Tuesday | World Hello Day | Observance |
| Nov 22 | Wednesday | Go For a Ride Day | Observance |
| Nov 23 | Thursday | Fibonacci Day | Observance |
| Nov 24 | Friday | Buy Nothing Day | Observance |
| Nov 24 | Friday | Celebrate Your Unique Talent Day | Observance |
| Nov 25 | Saturday | Shopping Reminder Day | Observance |
| Nov 26 | Sunday | Cakes Day | Observance |
| Nov 28 | Tuesday | Red Planet Day | Observance |
| Nov 29 | Wednesday | Electronic Greeting Card Day | Observance |
| Nov 30 | Thursday | Computer Security Day | Observance |
| December |
| Dec 1 | Friday | Eat a Red Apple Day | Observance |
| Dec 2 | Saturday | Fritter Day | Observance |
| Dec 3 | Sunday | Make a Gift Day | Observance |
| Dec 4 | Monday | Wear Brown Shoes Day | Observance |
| Dec 5 | Tuesday | Day of the Ninja | Observance |
| Dec 6 | Wednesday | Put on Your Own Shoes Day | Observance |
| Dec 6 | Wednesday | Microwave Oven Day | Observance |
| Dec 7 | Thursday | Letter Writing Day | Observance |
| Dec 8 | Friday | Pretend to Be a Time Traveler Day | Observance |
| Dec 9 | Saturday | Christmas Card Day | Observance |
| Dec 10 | Sunday | Dewey Decimal System Day | Observance |
| Dec 10 | Sunday | Jane Addams Day | Observance |
| Dec 11 | Monday | Noodle Ring Day | Observance |
| Dec 12 | Tuesday | Gingerbread House Day | Observance |
| Dec 14 | Thursday | Official Lost and Found Day | Observance |
| Dec 14 | Thursday | Monkey Day | Observance |
| Dec 15 | Friday | Underdog Day | Observance |
| Dec 16 | Saturday | Chocolate Covered Anything Day | Observance |
| Dec 20 | Wednesday | Sangria Day | Observance |
| Dec 21 | Thursday | Ugly Sweater Day | Observance |
| Dec 21 | Thursday | International Dalek Remembrance Day | Observance |
| Dec 22 | Friday | Date Nut Bread Day | Observance |
| Dec 23 | Saturday | Festivus | Observance |
| Dec 24 | Sunday | Eggnog Day | Observance |
| Dec 25 | Monday | Grav Mass Day | Observance |
| Dec 25 | Monday | A phabet Day or No L Day | Observance |
| Dec 26 | Tuesday | Thank You Note Day | Observance |
| Dec 27 | Wednesday | No Interruptions Day | Observance |
| Dec 28 | Thursday | Card Playing Day | Observance |
| Dec 29 | Friday | Pepper Pot Day | Observance |
| Dec 30 | Saturday | Bicarbonate of Soda Day | Observance |
| Dec 31 | Sunday | Make Up Your Mind Day | Observance |