National days in May — National Everyday

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The calendar

May

69 national days in May.

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National Purebred Dog DayMay 1 is National Purebred Dog Day, a day to celebrate the heritage, predictable traits, and diversity of purpose-bred dog breeds.

National Space DayThe first Friday in May is National Space Day (May 1 in 2026), celebrating exploration and inspiring young stargazers.

Save the Rhino DayMay 1 is Save the Rhino Day: learn about these armored giants and back the fight against poaching that threatens their survival.

Free Comic Book DayFree Comic Book Day, the first Saturday of May, is when comic shops hand out free issues — the perfect on-ramp to the medium.

International Harry Potter DayMay 2 is International Harry Potter Day: fans mark the in-story Battle of Hogwarts anniversary by returning to the wizarding world.

National Herb DayNational Herb Day lands on the first Saturday of May, start an herb garden you will actually cook from.

Pilates DayCelebrated the first Saturday of May, Pilates Day invites you to try the low-impact method built around core strength and control.

Health & Wellness

World Tuna DayMay 2 is World Tuna Day, a UN day spotlighting tuna's role in food and oceans and why sustainable fishing keeps stocks healthy.

International Leopard DayMay 3 is International Leopard Day: a day to appreciate the elusive big cat and support coexistence between people and leopards.

National Specially-abled Pets DayMay 3 is National Specially-abled Pets Day — celebrating disabled pets and the joyful, full lives they lead with support.

Wild Koala DayMay 3 is Wild Koala Day: a moment to appreciate Australia's sleepy eucalyptus-loving marsupial and back the wild habitat it needs to survive.

International Respect for Chickens DayMarked every May 4, International Respect for Chickens Day asks us to see the hen as the curious, social bird she really is.

National Orange Juice DayMay 4 is National Orange Juice Day — squeeze it fresh, drink it cold, and taste the difference from the carton.

Star Wars DayCelebrated every May 4, Star Wars Day is the fan holiday built on a pun: May the Fourth be with you.

National Cartoonists DayMay 5 is National Cartoonists Day, honoring the artists who make us laugh and think with a few well-drawn lines.

National Enchilada DayMay 5 is National Enchilada Day: roll a tortilla around a filling, drown it in chili sauce, and celebrate one of Mexico's coziest meals.

National Hoagie DayMay 5 is Hoagie Day — Philly's name for the loaded Italian sub stacked with meats, cheese, and oil.

National Beverage DayMay 6 is National Beverage Day, a catch-all toast to everything you drink. Rethink your daily glass and mix something new.

World Accordion DayWorld Accordion Day, May 6, marks the anniversary of the accordion's 1829 patent and its wonderfully portable sound.

National Cosmopolitan DayMay 7 is National Cosmopolitan Day: toast the pink vodka, triple sec, cranberry, and lime cocktail that defined 1990s cocktail glamour.

National Tourism DayMay 7 is National Tourism Day: notice the trips near home and finally book the one you keep putting off.

National Donkey DayEvery May 8, National Donkey Day (also World Donkey Day) honors the patient, clever working animal behind millennia of human labor.

National Have a Coke DayMay 8 is National Have a Coke Day, marking Coca-Cola's 1886 debut: crack open an ice-cold classic and enjoy the fizz.

National Public Gardens DayNational Public Gardens Day is the Friday before Mother's Day, go wander a botanical garden near you.

No Socks DayMay 8 is No Socks Day: kick off your socks, let your feet breathe, and enjoy a small, silly break from one everyday layer.

Lost Sock Memorial DayMay 9 is Lost Sock Memorial Day: a tongue-in-cheek nod to every single sock orphaned by the laundry, and a great excuse to finally sort the pile.

World Migratory Bird DayWorld Migratory Bird Day falls on the second Saturday of May (May 9 in 2026), honoring the birds that travel thousands of miles each year.

National German Shepherd DayMay 10 is National German Shepherd Day, a chance to celebrate one of the world's most loyal, hardworking, and beloved dog breeds.

National Shrimp DayMay 10 is National Shrimp Day: cook them fast, buy them frozen, and don't let them go rubbery.

National Eat What You Want DayMay 11 is National Eat What You Want Day: one guilt-free day to eat the thing you actually crave, no justification required.

International Nurses DayMay 12 is International Nurses Day, marking Florence Nightingale's birthday and honoring the people who keep patients cared for around the clock.

Health & Wellness

National Limerick DayMay 12 is National Limerick Day: honor Edward Lear by writing a silly five-line rhyme that makes someone groan and grin.

International Hummus DayMay 13 is International Hummus Day: a global toast to the creamy chickpea-and-tahini dip, and a great excuse to make a batch from scratch.

National Apple Pie DayMay 13 is National Apple Pie Day — celebrating the lattice-topped classic made with the right apples and a crisp crust.

National Frog Jumping DayMay 13 is National Frog Jumping Day, a hop-happy nod to Mark Twain's famous tale and the real frogs worth celebrating.

International Chihuahua Appreciation DayMay 14 is International Chihuahua Appreciation Day: a celebration of the world's smallest dog breed and its enormous personality.

National Buttermilk Biscuit DayMay 14 is National Buttermilk Biscuit Day, a salute to the tall, flaky, butter-layered Southern breakfast classic.

National Bike to Work DayOn the third Friday of May, National Bike to Work Day dares you to swap the commute for two wheels.

Health & Wellness

National Chocolate Chip DayMay 15 is National Chocolate Chip Day — the little morsel behind the world's favorite cookie. Bake, taste, or upgrade your chips.

International Day of LightMay 16 is the International Day of Light, marking the first laser in 1960 and light's huge role in science and life.

National Classic Movie DayEvery May 16, National Classic Movie Day celebrates the golden-age films worth rediscovering on the biggest screen you have.

National Mimosa DayMay 16 is National Mimosa Day, the sparkling brunch staple of chilled bubbles and fresh-squeezed orange juice.

National Walnut DayMay 17 is National Walnut Day: toast a handful and taste how much better a fresh walnut really is.

World Hypertension DayMay 17 is World Hypertension Day, a global reminder to check your blood pressure and take simple steps toward a healthier heart.

Health & Wellness

World Telecommunication and Information Society DayMay 17 is World Telecommunication and Information Society Day, a UN day for the networks and connectivity that quietly run modern life.

International Museum DayHeld every May 18, International Museum Day invites everyone to explore the collections that hold our shared memory.

National Devil's Food Cake DayMay 19 is National Devil's Food Cake Day: bake the dark, cocoa-rich layer cake or grab a slice and pass the plate.

National Quiche Lorraine DayMay 20 is National Quiche Lorraine Day, honoring the custardy bacon-and-cheese tart that makes brunch feel elegant.

National Rescue Dog DayMay 20 is National Rescue Dog Day — celebrate adopted dogs and the shelters and rescues that give them second chances.

World Bee DayWorld Bee Day is May 20. Why one in three bites you eat needs a pollinator, the honeybee myth worth unlearning, and the flower patch that actually helps.

World Metrology DayMay 20 is World Metrology Day, honoring the 1875 Metre Convention and the quiet science of measurement.

International Tea DayMay 21 is International Tea Day, a UN observance celebrating tea's culture and the farmers behind the world's favorite hot drink.

International Day for Biological DiversityMay 22 is the International Day for Biological Diversity, the UN's celebration of the web of life — from soil microbes to blue whales.

National Solitaire DayEvery May 22, National Solitaire Day honors the classic one-player card game: patience, a deck, and a quiet hour.

World Turtle DayMay 23 is World Turtle Day: appreciate turtles and tortoises, help one cross the road safely, and rethink them as lifelong pets.

International Day of the MarkhorMay 24 is International Day of the Markhor: a UN day for the spiral-horned wild goat of Asia's high mountains and a rare conservation comeback.

National Scavenger Hunt DayMay 24 is National Scavenger Hunt Day. Send friends or kids chasing a clever list of clues around the block or across town.

National Tap Dance DayHeld every May 25 on Bill 'Bojangles' Robinson's birthday, National Tap Dance Day honors America's homegrown percussive dance.

National Wine DayMay 25: reds, whites, roses, and sparkling all get their moment. A day to trade up a bottle, learn a grape, and pour with friends.

National Paper Airplane DayNational Paper Airplane Day folds around every May 26 — one sheet, a few creases, and physics does the rest.

World Lindy Hop DayCelebrated every May 26 on Frankie Manning's birthday, World Lindy Hop Day honors the joyful original of swing dancing.

National Senior Health and Fitness DayOn the last Wednesday of May, National Senior Health and Fitness Day gets older adults moving with events for every ability.

Health & Wellness

National Sunscreen DayMay 27 is National Sunscreen Day — the cheapest anti-aging and skin-cancer prevention you'll ever buy.

Health & Wellness

World Otter DayWorld Otter Day falls on the last Wednesday of May (May 27 in 2026) — a splashy celebration of these playful river and sea mammals.

National Hamburger DayMay 28 is National Hamburger Day — fire up the grill, season simply, and build the burger of your dreams.

National Learn About Composting DayMay 29 is National Learn About Composting Day: turn kitchen scraps and yard trimmings into free, rich soil instead of landfill methane.

National Water a Flower DayMay 30 is National Water a Flower Day: go give something growing a drink — deep, at the base, in the morning.

World No Tobacco DayMay 31 is World No Tobacco Day: a WHO-led moment to weigh tobacco's risks, back smoke-free policies, and support anyone trying to quit.

Health & Wellness

World Parrot DayMay 31 is World Parrot Day: celebrate these brilliant, social birds, enrich a companion parrot's life, and support wild parrot conservation.