The Complete Guide to March's Obscure Holidays
March moves from winter cleanup into spring, and its 63 obscure holidays follow the same arc — Pi Day and the Ides of March sit next to National Puppy Day and Plant a Flower Day. St. Patrick's Day is the headline, but the month also quietly hosts a UN forest-awareness day, a Roman assassination anniversary, and a holiday invented specifically to help you invent more holidays.
This guide walks through all 63, day by day, with a bit of history or context for each one and a link to the full write-up — complete fun facts, ways to celebrate, and sourcing — on its own page.
Why does March have so many obscure holidays?
March's holidays split fairly evenly between two things: genuine calendar dates carrying real historical weight — the Ides of March, Alexander Graham Bell's 1876 patent, the Girl Scouts' 1912 founding, the first U.S. Navy submarine — and playful, openly invented modern observances like Be Nasty Day and International Goof Off Day. The month is also unusually numbers-literate, with Pi Day, National Grammar Day (a pun on the date itself, “march forth”), and World Mathematics Day all landing within a few days of each other.
How to use this guide
Holidays are grouped by date below. Each entry gets a short original write-up — not a repeat of the fact sheet — plus a link to the full holiday page if you want the deeper dive: complete fun facts, ways to celebrate, and sourcing.
March 1
π₯ National Peanut Butter Lover's Day
George Washington Carver gets credit for popularizing peanuts, but he didn't actually invent peanut butter — the first patent for a peanut paste process went to Marcellus Gilmore Edson of Montreal in 1884. It takes roughly 540 peanuts to fill a standard 12-ounce jar. Full holiday page →
π· National Pig Day
Founded in 1972 by sisters Ellen Stanley and Mary Lynne Rave with the explicit goal of giving “the pig its due.” The mud-wallowing reputation is mostly misunderstood — pigs are naturally clean animals, and the mud is just their version of sweat, regulating body temperature since they can't do it any other way. Full holiday page →
March 2
π© Dr. Seuss Day
Timed to Theodor Geisel's birthday and mostly run through the National Education Association's Read Across America program. Green Eggs and Ham exists because of a bet — Geisel's editor wagered he couldn't write a book using only 50 distinct words, and he won. Full holiday page →
π°οΈ Old Stuff Day
Genuinely undecided about its own purpose — some treat it as a prompt to dig through old photos and heirlooms, others use it as permission to finally throw the old stuff out. No clear founder or origin, which is fitting for a holiday about the past. Full holiday page →
March 3
πΊ National Anthem Day
“The Star-Spangled Banner” didn't become the official U.S. anthem until 1931, well over a century after Francis Scott Key wrote the lyrics in 1814 — and he set them to the tune of a British drinking song. Only the first of its four stanzas gets sung in practice. Full holiday page →
π World Wildlife Day
The date was chosen deliberately: March 3rd is the anniversary of CITES, the 1973 treaty that now regulates international trade in more than 38,000 species of animals and plants. The UN didn't formally proclaim the day itself until 2013, forty years after the treaty it commemorates. Full holiday page →
March 4
β‘ March Forth Day
The entire holiday exists because of a pun — March 4th sounds like “march forth,” and that's genuinely the whole premise, repurposed every year as an informal prompt to finally start something. Full holiday page →
β National Grammar Day
Founded in 2008 by Martha Brockenbrough specifically to lean into the same pun as March Forth Day — “march forth” as a command for better sentence structure. A common activity is hunting for grammar mistakes on public signage, which is a surprisingly satisfying way to spend the day. Full holiday page →
March 5
π‘ International Birdhouse Day
Different bird species need genuinely different birdhouse dimensions — entry hole size alone can determine which species uses it and which predators can't get in. Building birdhouses also doubles as informal pest control, since many of the birds attracted feed on insects. Full holiday page →
π Learn What Your Name Means Day
Names carry more encoded history than most people realize — many trace back to ancient occupations, characteristics, or social status, not just aesthetic preference. In some cultures the belief runs deeper still: a name isn't just a label but something thought to shape a person's fate. Full holiday page →
March 6
πͺ Oreo Cookie Day
Marks the exact day in 1912 that Nabisco sold the first Oreo. Over 450 billion have been sold since, making it the best-selling cookie of the entire 20th century — and the cookie-to-cream ratio is precisely 71% to 29%, which someone at some point actually measured. Full holiday page →
π World Mathematics Day
The concept of zero wasn't a single invention — it was arrived at independently by both Mayan and Indian civilizations, continents apart with no contact between them. The word “algebra” comes from the Arabic al-jabr, meaning “the reunion of broken parts.” Full holiday page →
March 7
π Alexander Graham Bell Day
Marks the day his telephone patent was granted in 1876 — but Bell himself reportedly refused to keep a telephone in his own study, considering it an intrusion on his work. His mother and wife were both deaf, which shaped his lifelong research into hearing and speech well beyond the telephone itself. Full holiday page →
π₯£ National Cereal Day
Cornflakes were invented in 1894 by Dr. John Harvey Kellogg, originally as health food for patients at his sanitarium, not as a breakfast treat. More than 2.7 billion boxes of cereal get sold in the US alone every year, and the name traces back to Ceres, the Roman goddess of grain. Full holiday page →
March 8
π Be Nasty Day
Entirely tongue-in-cheek — the “nastiness” here means mischievous or rebellious, not actually unkind, more in the spirit of eating dessert first than any real transgression. Origins are murky, likely internet culture rather than any formal founder. Full holiday page →
β International Women's Day
Traces back to a 1910 proposal by Clara Zetkin at an international conference of working women in Copenhagen, with the first observance following in 1911. The UN didn't formally adopt March 8th until 1975 — 65 years after Zetkin's original proposal. Full holiday page →
March 9
πΆββοΈ Get Over It Day
No clear founder, no formal recognition — just an internet-era prompt to consciously let go of a grudge or setback rather than carry it forward. The suggested methods (journaling, meditation) are genuinely standard advice dressed up as a holiday. Full holiday page →
β¨ International Day of Awesomeness
Landed on this date at least partly because it's Chuck Norris's birthday, a figure whose entire internet-meme persona is built around exaggerated “awesomeness.” Beyond that pun, the holiday has no formal structure — just an invitation to notice something good. Full holiday page →
March 10
π΅ First Greenback Day
Marks March 10, 1862, when the Legal Tender Act let the Union print paper currency to help finance the Civil War without relying entirely on gold and silver. The green ink on the back wasn't decorative — it was specifically chosen to make counterfeiting harder. Full holiday page →
π National Mario Day
The date is a visual pun: “MAR10” looks like “MARIO.” Mario didn't start as a plumber, either — he debuted as a carpenter in 1981's Donkey Kong under the name “Jumpman,” and only became a plumber in 1983's Mario Bros. to fit the game's underground pipe setting. Full holiday page →
March 11
π National Promposal Day
The word is a blend of “prom” and “proposal,” and the trend escalated fast — from a simple in-person ask in the early 2000s to elaborate, sometimes viral public spectacles involving flash mobs and themed costumes. Full holiday page →
π§ Worship of Tools Day
The earliest known tools are stone implements over 3 million years old, found in East Africa — older than modern humans themselves. Several ancient civilizations treated tools as gifts from the gods rather than human inventions. Full holiday page →
March 12
π² Girl Scout Day
Marks the exact founding date in 1912, when Juliette Gordon Low started the very first troop in Savannah, Georgia with just 18 girls. The organization now counts millions of members worldwide, all traceable back to that one small group. Full holiday page →
πΈ Plant a Flower Day
Several popular garden flowers — pansies, nasturtiums, daylilies — are actually edible, meaning this holiday overlaps a little with cooking. Planting native varieties specifically, rather than whatever looks nice, is what actually supports local bee and butterfly populations. Full holiday page →
March 13
π€ Good Samaritan Day
Draws directly from the biblical parable in the Gospel of Luke, and is observed under different names in different countries, but the core idea stays consistent: recognizing people who help strangers with nothing to gain for themselves. Full holiday page →
π§ National Earmuff Day
Marks the exact 1877 patent date for Chester Greenwood's earmuffs — he was only 18 or 19, and reportedly invented them after his ears froze while ice skating, bending wire into loops and having his grandmother sew fur onto them. He went on to hold over 100 patents in his lifetime. Full holiday page →
π΄ World Sleep Day
Deliberately scheduled the Friday before the March equinox rather than a fixed date, which means it moves slightly every year. About 60% of adults report sleep problems at some point in their lives, which is the statistic the entire day exists to address. Full holiday page →
March 14
π¨ Doodle Day
Loosely piggybacks on Pi Day, since Google's own Pi Day doodles tend to lean creative and mathematical at once. Doodling isn't just idle habit, either — research links it to better concentration and memory retention during otherwise mundane tasks. Full holiday page →
Ο Pi Day
The date is a pun on the decimal itself — 3/14 matching π's first three digits — and it happens to also be Einstein's birthday, a coincidence organizers lean into constantly. The first large-scale celebration was organized in 1988 by physicist Larry Shaw at the San Francisco Exploratorium. Full holiday page →
March 15
π‘ Ides of March
Marks Julius Caesar's actual assassination in 44 BC, in a Senate meeting — the famous warning to “beware the Ides of March” is Shakespeare's dramatization of an older soothsayer legend, not a documented quote. The Ides fell on the 15th only for March, May, July, and October; every other month it landed on the 13th. Full holiday page →
π½ World Contact Day
Started in 1953 by a group of UFO enthusiasts, built around the idea of actively sending signals into space rather than just watching the sky and hoping. It's less about evidence and more about the ritual of trying to say hello. Full holiday page →
March 16
π₯ International Potato Chip Day
Chef George Crum is credited with inventing the potato chip in 1853 in Saratoga Springs, New York — allegedly out of spite, after a customer kept sending fries back for being too thick. By 2018, chips had overtaken cookies and candy as America's most popular snack. Full holiday page →
πΌ National Panda Day
A newborn panda cub weighs about 3 to 5 ounces — roughly the size of a stick of butter — which is a strange contrast next to an adult that can eat 30 pounds of bamboo a day. Conservation efforts have actually worked here: pandas were downgraded from “endangered” to “vulnerable” as populations recovered. Full holiday page →
March 17
π St. Patrick's Day
Saint Patrick wasn't Irish — he was born in Roman Britain in the late 4th century. The color most associated with him wasn't originally green, either; it was blue, and green only took over later as the holiday's branding solidified. Full holiday page →
π’ Submarine Day
Marks the 1900 purchase of the USS Holland, the first submarine the U.S. Navy officially commissioned, designed by Irish-American engineer John Philip Holland. Top speed was about 5.5 knots and it could dive to 75 feet — modest by modern standards, but genuinely new at the time. Full holiday page →
March 18
π¬ Awkward Moments Day
The word “awkward” traces back to the Old Norse afugr, meaning “turned the wrong way” — a fittingly literal etymology for a feeling that's fundamentally about being out of sync. Studies suggest that naming an awkward moment out loud tends to defuse it rather than make it worse. Full holiday page →
π National Sloppy Joe Day
Traces to a 1930s diner in Key West, Florida, allegedly invented by a man named Joe as a way to use up leftover ground beef — hence the name. The average serving runs around 500 calories, which is a lot of nutritional information for something this messy. Full holiday page →
March 19
π National Let's Laugh Day
Children reportedly laugh hundreds of times a day; adults average just 15 to 20, which is the entire gap this holiday exists to close. A real laugh engages the diaphragm and facial muscles enough to function as a light cardio workout. Full holiday page →
π Poultry Day
Chicken is the most consumed meat on Earth, ahead of both pork and beef, and a single laying hen can produce over 300 eggs a year. Turkeys were domesticated in Mesoamerica long before Europeans ever set foot there. Full holiday page →
March 20
π International Day of Happiness
Established by the UN in 2012, built around the idea that happiness is a legitimate policy goal, not just a private feeling — some countries now track a formal “Gross National Happiness” metric alongside GDP. Full holiday page →
π½ National Alien Abduction Day
The modern abduction narrative largely traces to a single case: the 1961 Betty and Barney Hill incident, one of the first widely publicized claims of its kind. Most reported accounts share oddly specific common elements — missing time, bright lights, medical exams — that later shaped an entire genre of storytelling. Full holiday page →
March 21
π³ International Day of Forests
Forests cover roughly 31% of the world's land and shelter about 80% of all terrestrial species, a disproportionate amount of the planet's biodiversity packed into less than a third of its surface. The UN only established this day in 2012. Full holiday page →
π International Poetry Day
Established by UNESCO in 1999, deliberately timed to land near the arrival of spring in the Northern Hemisphere, leaning on the symbolism of renewal. Poetry itself predates most other literary forms, with roots in ancient Mesopotamia and Greece. Full holiday page →
March 22
π€ͺ International Goof Off Day
Credited to comedian and author Joey Green in the early 1980s, and despite the grand “International” name, it's never been formally recognized as a public holiday anywhere. The entire point is the absence of a point — no productivity, no agenda, just downtime. Full holiday page →
πΈ World Frog Day
There are over 6,000 known frog species, and some can jump more than 20 times their own body length. Scientists treat them as bioindicators — since frogs absorb water directly through their skin, their health tends to reflect their environment's health before other species show signs of trouble. Full holiday page →
March 23
πΆ National Puppy Day
Founded in 2007 by Colleen Paige, the same person behind National Dog Day and National Cat Day. Puppies are born both blind and deaf, completely dependent on their mother for the first few weeks — and like human fingerprints, no two puppy nose prints are identical. Full holiday page →
π¨ Near Miss Day
The “near miss” framing comes largely from aviation, where documented close calls have directly driven stricter safety regulations over the decades. The holiday's entire logic is that studying what almost went wrong is often more useful than studying what actually did. Full holiday page →
March 24
π« Chocolate Covered Raisin Day
Raisinets, the best-known brand, launched in 1927 from the Blumenthal Chocolate Company — old enough to predate sound in movies, a fitting coincidence for a snack now synonymous with movie theaters. The coating is applied through “panning,” tumbling raisins in a rotating drum while liquid chocolate is gradually added. Full holiday page →
πΉ National Cocktail Day
The word “cocktail” got its first formal print definition in an 1806 American newspaper: “a stimulating liquor, composed of spirits of any kind, sugar, water, and bitters.” Most of the classics still on menus today — the Old Fashioned, the Martini, the Manhattan — emerged decades later, in the late 19th and early 20th centuries. Full holiday page →
March 25
π Tolkien Reading Day
The date isn't arbitrary — March 25th is the exact day the One Ring is destroyed and Sauron falls in The Lord of the Rings, chosen deliberately by The Tolkien Society. It's been running since 2003, with a different suggested theme picked each year. Full holiday page →
π§ Waffle Day
A holiday born from mishearing: Sweden's “Våffeldagen” (Waffle Day) sounds almost identical to “Vårfrudagen” (Our Lady's Day, the Annunciation), and over time the linguistic coincidence quietly rewrote the tradition. It has nothing to do with America's National Waffle Day, which falls in August and marks the patenting of the waffle iron instead. Full holiday page →
March 26
π€Έ International Trampoline Day
The word “trampoline” comes from the Spanish trampolín, meaning diving board — fitting, since the device was originally built as acrobat training equipment in the 1930s, not a backyard toy. It became an official Olympic sport in 2000. Full holiday page →
π‘ Make Up Your Own Holiday Day
A genuinely recursive holiday — a day that exists specifically to invent more days like itself. There are already over 1,500 recognized national and international observance days in the US alone, many created by industry groups to promote a specific product, which this holiday openly invites you to do too. Full holiday page →
March 27
β National Joe Day
Built entirely around a pun on the slang term for coffee, and running since at least the 1990s — the whole premise is buying a cup of “joe” for anyone you know actually named Joe. Full holiday page →
π World Theatre Day
Established in 1961 by the International Theatre Institute, with its first observance the following year. Every year a different prominent theatre figure writes an official message for the occasion — essentially theatre's version of a state-of-the-union address. Full holiday page →
March 28
π± Respect Your Cat Day
Cats sleep an average of 15 hours a day, sometimes up to 20 — meaning most of a cat's life on this holiday is spent doing exactly what it does every other day. Their purring has a documented calming effect on humans nearby. Full holiday page →
π’ Something on a Stick Day
The concept goes back much further than the corn dog or lollipop — ancient Egyptian meat skewers, enjoyed by pharaohs as early as 3000 BC, may be the earliest known food on a stick. The popsicle's origin is a genuine accident: 11-year-old Frank Epperson left a sugary drink with a stirring stick outside overnight in 1905, and it froze. Full holiday page →
March 29
πΉ Piano Day
The date isn't arbitrary — March 29th is the 88th day of the year, matching the 88 keys on a standard piano. Founded in 2015 by musician Nils Frahm, it's since grown into an occasion for free concerts held by musicians worldwide. Full holiday page →
β¨ Smoke and Mirrors Day
The phrase comes directly from old stage magic, where literal smoke obscured the stage and mirrors created illusions — misdirection made physical before it became a metaphor. It's since become political and media shorthand for any deliberately misleading presentation. Full holiday page →
March 30
π΅ Cacti Appreciation Day
Some cacti can live for two centuries, and a single plant can store up to 200 liters of water, which is what lets them survive conditions that would kill nearly anything else. The saguaro, the tallest species, can top 40 feet — taller than most houses. Full holiday page →
π Virtual Vacation Day
Gained real traction during the COVID-19 pandemic, when actual travel wasn't an option and virtual tours of places like the Louvre or NASA's Mars surface imagery filled the gap. It's also one of the few holidays on this calendar that's genuinely accessible to people with mobility limitations. Full holiday page →
March 31
π National Crayon Day
The first Crayola crayons sold in 1903 for five cents a box — a price that undersells how big the product would eventually become, with Crayola now offering more than 120 distinct shades. The world's largest crayon, in Germany, measures 15 feet long. Full holiday page →
πΎ World Backup Day
Founded in 2011 by a group of tech enthusiasts, built around one blunt statistic: over 60% of people have never backed up their data at all. A single failure — hardware dying, accidental deletion, malware — can wipe out years of files with no warning. Full holiday page →
Frequently asked questions
How many obscure holidays are there in March?
63, spread across all 31 days β including World Sleep Day, which floats to the Friday before the March equinox each year rather than sitting on a fixed date.
What's the most historically significant holiday in March?
The Ides of March (Mar 15) marks Julius Caesar's actual 44 BC assassination, and Alexander Graham Bell Day (Mar 7) marks his real 1876 telephone patent β two of the month's more solidly documented dates.
Are there a lot of food holidays in March?
Yes β Oreo Cookie Day, National Sloppy Joe Day, Waffle Day, National Cocktail Day, International Potato Chip Day, and several more make up a good chunk of the month.
Where can I find the full history and fun facts for each holiday?
Every holiday name in this guide links to its own dedicated page with a longer write-up, sourced fun facts, and ideas for how to celebrate.
About this guide
This guide is part of the Obscure Holiday Calendar project — the same database that powers the iOS and Android apps and the individual holiday pages on this site. It exists to give a single, readable overview of an entire month at once, instead of requiring 63 separate page visits.