The year starts with an eclectic mix of hashtag holidays. If you’re a fashion or sports brand, or a podiatrist make a plan for Measure your Feet Day on January 23. For a quirky day, plan to celebrate National Answer Your Cat’s Question Day.

A word of caution for Australia Day on January 26. As with all nation holidays, please check how any celebration will be received by your audience. History often only tells half the story.

Last updated: January 15, 2021 – 197 hashtag holidays

This list starts with the hashtag holidays by day, followed by the celebration months. There’s a little duplication because that’s the nature of made up holidays. Some also rotate year-to-year and we’re still working at identifying those. If you know a holiday that’s missing or we’ve made a mistake, please let us know!

Hashtag holidays with rotating dates are identified by the year. Official public holidays have the country and state, if state-based.

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January 1

New Year’s Day | Polar Bear Swim Day | Copyright Law Day | First Foot Day | Z Day | Commitment Day | Euro Day | National Bloody Mary Day | Apple Gifting Day

January 2

Motivation and Inspiration Day | Science Fiction Day | Personal Awareness Trainer Day | Buffet Day | National Cream Puff Day | Run Up the Flagpole and See if Anyone Salutes It Day | World Introvert Day | Happy New Year Day for Cats | 55 mph Speed Limit Day

January 3

Festival of Sleep Day | Chocolate-covered Cherry Day | Drinking Straw Day | JRR Tolkien Day

January 4

World Braille Day | National Spaghetti Day | National Trivia Day #NationalTriviaDay | Humiliation Day | Hypnotism Day | Pop Music Chart Day

January 5

National Whipped Cream Day | National Bird Day

January 6

National Shortbread Day | Bean Day | Apple Tree Day | Cuddle Up Day | Sherlock Holmes Day | Three Kings Day | National Bean Day | Epiphany | National Technology Day

January 7

National Tempura Day | Bobblehead Day | Harlem Globetrotters Day | Old Rock Day | I’m Not Going to Take it Anymore Day | Weigh-In Day

January 8

Clean Off Your Desk Day | Bubble Bath Day | Earth’s Rotation Day | National Joy Germ Day | Man Watcher’s Day | Argyle Day | Show and Tell at Work Day | Poetry at Work Day | National English Toffee Day

January 9

National Apricot Day | Static Electricity Day | Poetry at Work Day | Play God Day | Law Enforcement Appreciation Day | Balloon Ascension Day | National Cassoulet Day

January 10

National Bittersweet Chocolate Day | Peculiar People Day | Cut Your Energy Costs Day | Houseplant Appreciation Day | National Oysters Rockefeller Day | National Save the Eagles Day

January 11

National Milk Day | National Hot Toddy Day | National Step in a Puddle Day | Splash Your Friends Day | Learn Your Name in Morse Code Day | World Sketchnote Day | Human Trafficking Awareness Day

January 12

Pharmacist Day | Marzipan Day | Kiss a Ginger Day | Feast of Fabulous Wild Men Day | National Curried Chicken Day

January 13

Rubber Duckie Day | Skeptics Day | Public Radio Broadcasting Day | Sticker Day | Make Your Dream Come True Day | National Gluten-Free Day | Blame Someone Else Day | Stephen Foster Memorial Day | National Peach Melba Day

January 14

National Dress Up Your Pet Day | International Kite Day | National Hot Pastrami Sandwich Day | Clean Off your Desk Day | Organize Your Home Day

January 15

National Strawberry Ice Cream Day | National Hat Day #NationalHatDay | Pothole Day | National Bagel Day | Lee-Jackson Day (VA)

January 16

National Nothing Day | Appreciate a Dragon Day | Hot and Spicy (International) Food Day | Religious Freedom Day | National Fig Newton Day

January 17

Kid Inventors’ Day | Cable Car Day | Ditch Your Resolution Day #DitchYourResolutionDay | Women’s Healthy Weight Day | Hot Buttered Rum Day

January 18

Winnie the Pooh Day | Thesaurus Day | World Religion Day | Peking Duck Day | Museum Selfie Day | Martin Luther King Jr Day renamed in some states (2021)

January 19

National Popcorn Day | Tin Can Day

January 20

Cheese Lovers Day #NationalCheeseLoversDay | Penguin Awareness Day | Disc Jockey Day | National Buttercrunch Day | Camcorder Day | Day of Acceptance | National Granola Day | National Coffee Break Day | Inauguration Day (DC, VA and MD)

January 21

National Hugging Day #NationalHuggingDay | Granola Bar Day | International Sweatpants Day | Squirrel Appreciation Day | Playdate Day | National New England Clam Chowder Day

January 22

Hot Sauce Day | Celebration of Life Day | National Answer Your Cat’s Question Day | National Blonde Brownie Day | Celebration of Life Day

January 23

National Handwriting Day | National Pie Day | Measure Your Feet Day

January 24

National Peanut Butter Day | Eskimo Pie Patent Day | Belly Laugh Day | Talk Like a Grizzled Prospector Day | International Day of Education

January 25

Opposite Day #OppositeDay | National Irish Coffee Day | Fun at Work Day | A Room of One’s Own Day | Burns Night | Bubble Wrap Appreciation | Community Manager Appreciation Day #CMAD Day (2021)

January 26

Spouse’s Day | Australia Day | International Fun at Work Day | National Green Juice Day | National Pistachio Day | Visit Your Local Quilt Shop Day

January 27

National Chocolate Cake Day | National Geographic Day | Multicultural Children’s Book Day | Punch the Clock Day | Thomas Crapper Day | World Breast Pumping Day | International Holocaust Remembrance Day

January 28

Data Privacy Day | National Blueberry Pancake Day | National Kazoo Day | Clash Day | Rattle Snake Round-Up Day | Global Community Engagement Day

January 29

Puzzle Day | National Cornchip Day | Free Thinkers Day | Curmudgeons Day

January 30

National Croissant Day | Escape Day | Inane Answering Message Day

January 31

Gorilla Suit Day | Backwards Day | Child Labor Day

January Hashtag Holidays

Cervical Health Awareness Month | National Birth Defects Prevention Month | National Glaucoma Awareness Month | National Radon Action Month | National Stalking Awareness Month | Thyroid Awareness Month | Bread Machine Baking Month | National Candy Month | National Egg Month | National Hot Tea Month | National Meat Month | National Oatmeal Month | National Soup Month | National Wheat Bread Month | Prune Breakfast Month

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Photo by Glen Carrie on Unsplash