Fictional Holiday

Summerween! The people of this town love Halloween so much, they celebrate it twice a year. And wouldn't you know it, it's today!

"Every day is a holiday for SpongeBob, even if he has to make one up."

— The Narrator, SpongeBob SquarePants, "Bubble Buddy"

Are you bored with the usual holidays? How about celebrating a new holiday!

This trope deals with holidays non-existent in the real world, in other words holidays that only exist in a story's universe.

Just about any fictional fantasy setting with their own fantasy nations/history/cultures will come with their own fictional holidays. See also You Mean "Xmas", Alternative Calendar. See also Pop Culture Holiday for when fans celebrate the holiday in real life.

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Examples:

Holidays existent in-universe:

Advertising

• From the 2004 holiday season, Virgin Mobile's "Cristmahanukwanzakaa" campaign, with mish-mash imagery of the three holidays, their religions (eg. a Hindu in a Santa suit), and others. Hey, it's the fine deals on cell phones that make it a holiday for all of us.

Anime & Manga

• "Heaven's Day" in The Big O, which was the day Paradigm City was founded. It's clearly related to Christmas (giving presents, trees, etc.) Alex Rosewater seems to know the significance of its trappings, and mentions it's "the day God's son was born" - which has some ominous overtones given his ambitions...
• Doraemon has an episode where Nobita asks Doraemon to create a "Fake Holiday" using one of his gadgets after complaining there are no holidays in August. They eventually come up with a "Do Nothing" Day to celebrate laziness, but it backfires hilariously as usual, since said holiday also affects all public services and infrastructures (when it's lunchtime, Tamako refuses to cook, saying "Cooking on Do Nothing Day is illegal"). Doraemon eventually shuts himself down (telling Nobita, "just activate me when the day is over") and a starving Nobita quickly deactivates the gadget turning the world back to normal.
• Jewelpet:
  • Jewelpet Twinkle☆ has the Snow Night, which is just Jewel Land's equivalent of Christmas.
  • Jewelpet Sunshine: episode 7 is about the Thanks to Jewel Day, by all apearances a day where humans have to thank the animals for letting them be in Jewel Land by being totally subservient to them. In the day after that, the opposite happens.
  • Lady Jewelpet has the Thanks Jewel Palace Day, celebrated in episode 28 with a carnival.
• Tamagotchi: The Tamagotchis celebrate "Roll on the Floor Day" at the beginning of a new year. It amounts to them lying on the floor doing nothing all day.
• Tenchi Muyo! has the Juraian holiday Startica, which happens to involve Christmas trees for some reason.^note Given that the Jurians are a much older civilization and have had secret influence on our governments for Tsunami knows how long, it is probably more accurate from an order-of-events and origin-of-the-practice standpoint to say that Christmas involves Startica trees for some reason.

Asian Animation

• Happy Heroes: In Season 8 episode 33, the medieval kingdom celebrates a holiday called Peace Day. To commemorate the end of a war that had occured long ago, for 24 hours, everyone in the kingdom is forbidden from settling conflicts violently and must find a way to do it peacefully; otherwise, they will be sent to jail.

Comic Books

• An issue of the ALF comic book revealed that Melmac had a variety of holidays.
  • Shown inside are:
    • Eat Off The Floor Day, in which celebrants (are supposed to) dress in bathing suits and eat "duck delight" while sitting on the floor, celebrating the discovery of linoleum by Alexander Graham Cracker. The foodstuff is not made of duck, but makes those who eat it think they're ducks. The two adult Tanners sample it early and go quackers.
    • Wear A Plant Day, in which a tree is planted that is supposed to grow to about a meter in height by evening. It gets nixed immediately by Willie, who discards the seed. A chance raccoon, however, knocks over the can, planting the seed... which begins to grow at an astonishing rate, due to Earth's relatively rich soil. Within the hour, it threatens to start a forest in the backyard that will spread from there in California to the Mississippi River by Thursday.
  • Shown on the front cover and mentioned within are: Bathe With A Policeman Day, Goomer's Birthday, UPC Symbol Day, Eat Your Calendar Day (which appears to be when cover was made, judging by Gordon's activities), Sit On A Friend Day, Play With Your Spaghetti Day, Give A Present To A Wall Day, Wear A Banana Split Day, Yad Sdrawkcab Gnihtyreve Lleps... and Make Up Your Own Holiday Day.
• In ElfQuest, the desert-dwelling Sun Folk celebrate the Festival of Flood and Flower.
• The Imitate Festival in a one-page gag of The Smurfs, where each Smurf must for a day imitate another Smurf. However, Papa Smurf isn't pleased that Jokey would choose to imitate him.
• Star Trek: Early Voyages: In "Our Dearest Blood", the Enterprise crew attend the Rigellian Festival of Light on Rigel VII. Captain Pike tells Dr. Boyce that they are the first off-worlders to attend the festival in a thousand years who were allowed to live. This turns out to be Foreshadowing as Yeoman Cusack and two other crewmembers are killed by Rigellian extremists shortly afterwards.
• Wonder Woman (1942): The Amazons have some rather, odd, feast days that Diana returns home to celebrate. Including Diana's Day where they "hunt" Amazons dressed as does and then tie them up and pretend to cook them, and their children hide in large metal fruits and vegetables and then burst out of them in a show of strength.

Comic Strips

• One The Far Side comic shows "Bring Your Cat to Work Day", which backfired and had to be cancelled when the cats lay on the computers.
• Sadie Hawkins Day in Li'l Abner.

Fan Works

• Empath: The Luckiest Smurf has Redemption Day, which is basically the Smurfs' version of Ash Wednesday with fasting, a religious cleansing/testing ritual, and something passing for the Eucharist thrown in. There's also the Harvest Feast, which is their version of Thanksgiving. And as a nod to Sony Pictures' The Smurfs live-action film series, there's the Blue Moon Festival, which happens only on the night of a blue moon.
• The Good Hunter has the Union Festival, a week of merriment where man and monster alike celebrate the founding of the city state of Sheffield.
• In The Keys Stand Alone: The Soft World, the Cloud Horn concert every hundred days on the Flying Island of Tipaan turns out to mark a Svenjaya holiday, though we never learn if the holiday has a name.
• Momentary Weakness: The new nation of Gardell has a few. Cloudclear Day celebrates the clearing of the Cloud Sea and the formation of the new continent (this one seems to be a world holiday). There are some cultural exchange festivals that are popular. Most popular however is "Golden Week," which refers to the birthdays of the three royal children, who were born three days in a row. Their birthdays are now national holidays, and depending on when they fall in the week it might mean people get a five day weekend.
• In My Huntsman Academia: Color Week is a week-long series of holidays in the fall similar to Golden Week, a Japanese series of holidays held in the spring that break up work schedules and offer both students and workers a chance to relax. Izuku uses the holiday to hang out with his friends and to visit home during his all-time favorite holiday, Hunter's Day, which is a local celebration of Huntsmen and Huntresses held only in Mountain Glenn due to how grateful the city is to Toshinori for saving it.
  • There's also Long Night, the story's equivalent of Halloween. Much like Halloween, kids dress up in costumes in hopes of getting candy from their neighbors, while the adults often attend costume parties and get wasted with their friends.
• Ruby Pair: Frosting the 13th, from the chapter of the same name, is an annual Irken holiday, where every year on the 13th day of the month of Frosting, every Irken gets free snacks (with the amount depending on their rank).
• Undocumented Features gave us such delightful Dantrovian holidays as "The Festival of the Fudge Sauce", "Terzayyl", and "The Day The Colonists From Earth Finally Understood."

Films — Animation

• In Puss in Boots, some citizens of San Ricardo are seen celebrating "El Festival de el Fuego y el Pollo", which translates to "The Festival of the Fire and the Chicken". It involves fireworks, a bonfire, and someone in a chicken suit on stilts.

Films — Live-Action

• Vivian Stanshall, Sir Henry At Rawlinson End (album and film versions): "To celebrate All Squids' Day there was a face-jumping competition at the Fool and Bladder."
• The Smurfs has the Blue Moon Festival, which takes place on the night of a (literal) blue moon.
• Star Wars:
  • The Star Wars Holiday Special introduces Life Day, later referenced in The Mandalorian.
  • The Phantom Menace shows that Tatooine has Boonta Eve, which is known for its podraces.

Literature

• P.C. Hodgell's Chronicles of the Kencyrath has, in addition to celebrating the turns of the seasons and solstices, an intercalary day that does not appear on calendars. This is called the Feast of Fools in Tai-tastigon, and is a holiday of lawlessness and excess; in the Kencyr military academy, Tentir, this is the Day of Misrule, where the normal rules of the college do not apply and anyone who snatches the scarf from around a cadet's or officer's neck can command them. In addition, the Tastigon celebrate, or more precisely fear, the Feast of Dead Gods, a night immediately after Autumn's Eve where gods that have lost their followers walk the streets, searching for prey or other things they desire.
• As well as Hogswatchnight, Discworld has the Soul Cake Days, which are a sort of cross between Hallowe'en (festivities include trickle-treating and sticky toffee rat on a stick) and Easter (the wizards used to roll boiled eggs down the Tump, and the Soul Cake Tuesday Duck lays chocolate eggs). Unfortunately for the Soul Cake Tuesday Duck, it also marks the start of the duck-hunting season.
  • Readers of the diaries and calendars will discover a vast range of other Discworld holidays, ranging from the Creator's Birthday and Patrician Day (28th April and 6th Grune respectively; see also the birthdates of Terry Pratchett and Stephen Briggs) to Treacle Pie Day (June 24, commemorating the burning of a Patrician who imposed an unpopular tax on washing lines). Some of them are only celebrated by the guild or organisation responsible for a particular diary; the Guild of Thieves celebrates Finder's Day, when the ancient rule of "finders, keepers" is in effect.
  • Discworld, as described in Night Watch, also has May 25th, "Lilac Day", a remembrance for those lost in the "Glorious" Revolution of Treacle Mine Road. It's only honored by those who were actually there, who wear a sprig of lilac because that had been the identifying mark the revolutionaries used. Vimes, Sgt. Colon and Reg Shoe of the Watch all wear one, as does Vetinari, although Vimes never really thought to ask him about his involvement in the revolution until nearly the end of Night Watch.
  • As established in Feet of Clay, the 4th of Grune is the day when Ankh-Morpork has a big fireworks display to celebrate the end of the Ankh-Morpork Civil War. Given the date, it's a clear reference to the Fourth of July in the States, but they burn Stoneface Vimes in effigy, so it's also Guy Fawkes Night.
  • In Witches Abroad, Genuans celebrate "Fat Lunchtime" or "Samedi Nuit Mort", which is mostly Mardi Gras, but also has elements of the Day of the Dead.
• In Early Riser, "Fat Thursday" (which takes place two months before the beginning of the unforgiving, 120-day-long "month" of Winter) is a festival that kicks off a period of overeating and deliberate lethargy as humans try to bulk up for hibernation:
  Fat Thursday had been long established as the first day of serious gorging, the time to indulge in the latest faddy get-fat-quick diets and to take a vow of abstinence from the mass-stealing sin of exercise. Yesterday you could run for a bus and no one would turn a hair, tomorrow it would be frowned upon as almost criminally irresponsible. For the two months until Slumberdown, every calorie was sacred; a fight to keep every ounce. Spring only ever welcomed the mass-diligent.
• Elephant & Piggie features a day called Happy Pig Day, which involves dancing around and oinking.
• In Alan Dean Foster's novelization of The Last Starfighter, Centauri mentions that Christmas is "a local holiday roughly corresponding to All-Ether Day on Rylos."
• In Relativity, Gale City was going to have a Mardi Gras celebration but couldn't pull it off in time. They decided to move everything to May 5th for Cinco de Mayo, but they didn't want to abandon the original idea, so they combined the two holidays. "Cinco de Mardi Gras" was such a huge hit they decided to have one every year.
• Sam Pig has many "bird days", celebrating the arrival of the migratory birds, e.g. Swallow's Day and Cuckoo's Day.
• Yobta’ Yupma’ in Star Trek: Klingon Empire, AKA the harvest festival. It’s mostly observed by farmers and natives of farming worlds, and isn’t widely known or celebrated by the rest of the Klingon Empire. Then there's the Andorian Spring Water Festival, as seen in the Star Trek: Deep Space Nine Relaunch.
• In Tailchaser's Song, cats have the Celebration of the Song of Whitewind (or "the Celebration" for short) on the first full moon of winter. Cats from all around gather to Rootwood to hear the Prince Consort tell stories and sing. But most come to just check to out the royal family and eat catmint.
• Harry Turtledove's Timeline-191 series has the USA observing Remembrance Day on April 22. While technically a holiday, it is designed to get people thinking about improving American nationalism and dedication to strengthening the country after losing two wars to the CSA.

Live-Action TV

• The 30 Rock episode "Leap Day" transforms leap day (February 29) from non-holiday into full-blown, commercialized, Christmas-esque bash with established traditions and traditional holiday characters. Liz is the only character who had never previously known Leap Day was such a big deal.
• The 100 has "Unity Day".
• ALF has Fappiano, a cross between Thanksgiving and Christmas.
• A.P. Bio takes place in Toledo, where real-life actress Katie Holmes is from, and in the world of the show Katie Holmes Day is an actual Christmas-like holiday during which Toledoans idolize her to an absurd degree. The story of her landing her Star-Making Role on Dawson's Creek is seen as an inspirational tale about achieving one's dreams, and live re-enactments of it are performed annually like a nativity play.
  • At least one family in town refuses to take part and instead celebrates Jamie Farr Day, which involves eating baked beans out of the can and males crossdressing like Farr's character Corporal Klinger did on M*A*S*H.
• The Day of the Dead (Brakiri holiday, not Mexican) in Babylon 5, is observed only once every 200 years.
• Colonial Day in the re-imagined Battlestar Galactica.
• One episode of Buffy the Vampire Slayer includes a banner celebrating Gurnenthar's Ascendance, which apparently occurs around the same time as Christmas.
  • "School Hard" takes place just before St. Vigeous' Day. Vigeous is remembered for leading a crusade of vampires.
• Corporate has "Remember Day", a hypercommercialized event held on September 11.
• Eerie, Indiana: In "Tornado Days", Eerie celebrates the 87th annual Tornado Day in order to appease Old Bob, the tornado that hits the town on the same day every year. Syndi is chosen as Miss Tornado Day and wears a themed costume. However, on this occasion, Old Bob is not appeased as it interprets Marshall and Simon's refusal to attend the celebration as an insult.
• Eureka has "Feynman Day", the genius equivalent of April Fools Day.
• The second episode of Firefly opens on "Unification Day," a yearly celebration of the Alliance's conquest of the independent outer worlds. Captain Reynolds, having fought against Unification, likes to celebrate it by starting a Bar Brawl.
• Rose Nylund from The Golden Girls reminisces about St. Olaf holidays: Everybody Hide the Corn Day, Hay Day, the Day of the Princess Pig, and the Day of the Wheat, when everybody came to town dressed as sandwiches.
• The Legend of Dick and Dom has Garlic Tuesday, a day to celebrate all that is smelly. It turns out that this is fictional in-universe as well, having been made up to torment Prince Dick when he was little.
• The Lord of the Rings: The Rings of Power: The Harfoots have a summer holiday called the Harvest Festival which seems to be inspired by the Irish holiday called the Wren Day. During the festival they wear costumes that look an awful lot like the traditional Wren Day ones.
• The Maid Marian and Her Merry Men episode "Raining Forks" is set on High Forks Night, in which they set off fireworks to commemorate the time a rebel blew up the castle kitchens, sending all the forks flying.
• Malcolm in the Middle: The "Ida's Dance" episode had Saint Grotus's Day from The Old Country. Parts of the celebrations include making a giant and terrible tasting tart with layers corresponding to the groups of people that Grotus slaughtered and a particularly dangerous version of Tinikling that involves sharp blades.
• In Season Two, Episode 8 of Our Flag Means Death, the crew celebrates Calypso's birthday, "the most holy of days for pirates." Subverted as it's not a real holiday, just an excuse for the crew to throw an elaborate party, and they all know it.
• Parks and Recreation invented "Galentine's Day", observed the day before St. Valentine's Day to celebrate close female friendships instead of romance. It caught on so much that it is now celebrated in real life.
• Powerless. When Lois Lane appears dead, the denizens of Metropolis can celebrate "No Consequences Day" as they'll be sure that Superman will eventually circle the world at supersonic speeds and set time backwards.
• Quark: Happy Number 11!
• Bobunk in Sabrina the Teenage Witch. Falling each year on the third Saturday of November, it is the celebration of cats, food, liquor, food with liquor in it, and food shaped like cats. It's too bad that Salem accidentally deleted it...
• Sesame Street: The grouch species has "Grouchy Mother's Day", in which siblings compete to make their mother angry.
• Silo has Freedom Day, the annual celebration of the rebellion's defeat. It is celebrated with most being off work as they listen to the mayor give a speech of commemoration.
• Star Trek: Deep Space Nine:
  • Several episodes have dealt with the Gratitude Festival; a Bajoran holiday where people talk about their problems and what they're grateful for.
  • In "Starship Down", Kira fasts because she's celebrating the anniversary of Sisko becoming the Emissary.
  • In "Bar Association", Quark complains that the Bajorans (who make up the majority of the people on the space station) aren't drinking at his bar because it's the "cleansing festival", which involves abstaining from alcohol.
• Star Trek: The Original Series:
  • In the episode "The Return of the Archons". The planet Beta 3 had the holiday called Festival, in which the population went totally berserk (destroying, raping, etc.) for 24 hours (starting at "Red Hour"), then returned to their normal placid demeanor. This was due to their mental conditioning by the computer Landru.
  • Inverted in the episode "Charlie X." where Thanksgiving is mentioned.
• Star Trek: Voyager:
  • In the opening scene of "Homestead", the Voyager crew is celebrating First Contact Day, the anniversary of humanity's first contact with the Vulcans on April 5, 2063. Captain Janeway recalls that it was typically only celebrated with a day off from school when she was a child.
  • In "Meld", the Vulcan "holiday" of Kal Rekk: "A day of atonement, solitude and silence," according to Tuvok. In the same conversation between Tuvok and Neelix, they discuss the ancient pagan festival of Rumarie, which apparently consisted of "barely clothed Vulcan men and women, covered in slippery Rillan grease, chasing one another." Tuvok says, "That has not been observed for a millennium."
  • "Mortal Coil" has Neelix celebrating Prixin, which involves celebrating friendship and family. The episode aired aroung Christmas, but Prixin doesn't have very many similarities to it.
  • "Day of Honor" has B'Elanna Torres not wanting to celebrate the eponymous Klingon festival, which involves eating "blood pie" and playing extreme sports.
• Star Trek: Picard:
  • Season 1 brings back First Contact Day — with a cruel twist, as it's now a day of remembrance after synthetic laborers rebelled and destroyed the Utopia Planitia shipyards and the Martian colonies.
  • Season 3 takes place in the days leading up to Frontier Day, with Picard and his former crew trying to stop a Borg plot to assimilate Starfleet and destroy The Federation.
• Life Day in The Star Wars Holiday Special.
• Welcome to Flatch has an annual celebration between Kelly and Shrub over the time Shrub touched a girl's boob
• Worzel Gummidge has the "Scarecrow Ball", celebrated by the living scarecrows.

Music

• Weasel Stomping Day, a holiday created (in a sense) by "Weird Al" Yankovic in a song detailing a holiday held where people spend the day using large boots to crush weasels.
• Every March 4th (or the nearest Saturday to it), Doctor Steel's Army of Toy Soldiers celebrate "Toy Soldier Day" (usually by going to the nearest Disney park...)

Puppet Shows

• Dinosaurs had "Refrigerator Day", an expy/parody of Christmas. It has elements of Thanksgiving and Hanukkah.

Radio

• Round the Horne announced some sort of festival every episode — Immerse An Orangutan In Porridge Week, for example. This would be celebrated by equally peculiar events, like floodlit horse massage (at the municipal swimming baths, Tooting).

Tabletop Games

• Traveller Classic. The Imperium in general had the Emperor's Birthday. One planet had a three day holiday during which the local law level was reduced to zero (i.e. no laws at all) to let the population blow off steam.

Video Games

• Animal Crossing has a bunch of holidays that are either made-up (Yay Day, La-Di-Day, Bright Lights, Festivale) or Suspiciously Similar Substitute holidays (Toy Day [Christmas], Bunny Day [Easter], etc).
• CAPSLOCK DAY in Billy vs. SNAKEMAN
• The Elder Scrolls II: Daggerfall has sixty-two holidays on its calendar, some regional and others present in the entire game-area, some corresponding to real-world celebrations and some not.
• Final Fantasy XIV has in-universe holidays that correlate with real-world holidays or important events, including:
  • Heavensturn, a Far Eastern holiday in which emissaries arrive in Eorzea to complete tasks related to their Zodiac. Based on Chinese New Year.
  • Valentione's Day, named after an Ishgardian countess renowned for her quest for love, celebrates romance. Inspired by Valentine's Day.
  • Little Ladies' Day, a celebration of women based on an Ul'dahn legend of a noble who would act as a servant for poor girls for a day. Based on Hinamatsuri (Girl's Day), a Japanese holiday.
  • Hatching-tide, a recently conceived holiday centered around the decoration of eggs and peaceful coexistence with Spriggans. Based on Easter.
  • The Moonfire Faire, a summer celebration in Costa del Sol which includes tests of agility. Based on various real-world summer celebrations, particularly the Bon festival.
  • The Rising, a celebration of Eorzea's restoration following the Seventh Umbral Calamity with elaborate firework displays. This holiday takes place immediately after the Moonfire Faire, and is based on the launch of A Realm Reborn.
  • All Saints' Wake, a Gridanian celebration of the occult wherein the Continental Circus pays a visit to — allegedly — sow discord. Based on Halloween.
  • The Starlight Celebration, a winter holiday based on the Ishgardian legend of the Saint of Nymeia, a knight captain who provided shelter for orphans during the Dragonsong War, and who is said to deliver presents to children. Based on Christmas.
• Flight Rising has a bunch, none of which correspond to real-world holidays (although the Riot of Rot tends to conveniently coincide with Halloween).
  • Each Flight has their own week-long festival held at or near the end of their respective month, featuring opportunities to get Flight-themed items, skins, and accents.
    • January: Crystalline Gala (Ice)
    • February: Trickmurk Circus (Shadow)
    • March: Mistral Jamboree (Wind)
    • April: Wavecrest Saturnalia (Water)
    • May: Greenskeeper Gathering (Nature)
    • June: Brightshine Jubilee (Light)
    • July: Thundercrack Carnivale (Lightning)
    • August: Flameforger's Festival (Fire)
    • September: Starfall Celebration (Arcane)
    • October: Riot of Rot (Plague)
    • November: Rockbreaker's Ceremony (Earth)
  • In December, rather than an elemental holiday, the game has a two-week-long festival called the Night of the Nocturne, which is the only way to get Nocturne eggs and breed change scrolls, as well as many other exclusive items.
  • Seasonal "mini-holidays" which correspond to the Fishing, Hunting, Insect Catching, and Plant Gathering food-collecting Gathering options. Each seasonal holiday adds special Familiar collectables to both Gathering and the Colosseum minigame for the duration of the holiday.
• Kingdom of Loathing uses a mixture of real-world and fictional holidays, to go with its fictional calendar: The Festival of Jarlsberg (New Years Day), St. Sneaky Pete's Day (St. Patrick's Day), Oyster Egg Day (Easter), Generic Summer Holiday (Summer Break, more or less, rather than any specific day), and Dependence Day (Fourth of July aka Independence Day) circulate around the calendar along with real-world holidays like Valentines Day and Halloween. Borderline cases such as Labór Day and Arrrrbor Day also exist.
• Moshi Monsters has Pranksgiving, which is essentially April Fool's but with a different name.
• The Sims 4: Seasons allows the player to create their own holidays and assign traditions to them. The traditions available range from existing holiday traditions to things like streaking and fighting.
• Splatoon:
  • Splatfests are special holidays centered around the messages recieved from an ancient fax machine. They occur every now and then,^note though always preceded by an announcement on social media and during those times normal online gameplay is put on hold in favor of Splatfest Battles, which are battles that pit teams of two thematically opposed sides against each other for the chance to win Super Sea Snails. Additionally, they take place at night with special concerts by the town's local idols, with plenty of Inklings (and later Octolings) in attendance.
  • While Inklings have Squidmas as a stand-in for Christmas, Octolings have a similar holiday around the same time known as Octivus.
• Super Treadmill: Novtober 10th is St. Burger Day, while Novtober 19th is Jelly Day.
• Team Fortress 2 has Australian Christmas. Every December the 17th, children in Australia make weapons and hats for Old Nick, a crotchety old man who lives at the South Pole. After receiving all of his gifts, Old Nick realizes he received many duplicates of gifts, so he sells them off for incredibly low prices!
• World of Warcraft has over a dozen seasonal events, most coinciding approximately with similar real world holidays.
• The opening cutscene of Xcom 2 mentions Unification Day, a holiday apparently dedicated to the formation of ADVENT.

Web Animation

• Homestar Runner likes to refer to Christmas as Decemberween.
• In RWBY, the Vytal Festival is an annual celebration of the end of the Great War which marked an era of peace and unity. It also hosts the Vytal Festival Tournament, a competition between the four Hunstman Academies to prove who the best student is in friendly competition.

Web Comics

• In The Adventures of Dr. McNinja, Dr. McNinja and his family celebrate "Katanaka", which commemorates their Irish ancestors' original victory over pirates. It's observed on Thanksgiving so they can get off work too.
• Antihero for Hire has Coffee Shops are Closed Day. Naturally, coffee shops are closed on that day.
• Aurora (2019) has a detailed list of fictional holidays, each of which marks the change from one month-analogue to the next and celebrates a major deity.
• Cirque Royale has the Mimean holiday Lantern Day, celebrating mime freedom. Enslaved entertainers in Human Kingdom escaped their servitude by scaring the superstitious humans with floating ghost lanterns; they ran away during the night back to Mimiopolis while the superstitious humans were hiding inside. To celebrate, mimes have parties and at night send lanterns floating into the sky to celebrate their freedom and honor the dead. (Placing notes to those that have passed on inside can be part of the tradition; Kingston sends his annual letter to his late parents this way.) This is then followed with a large feasting dinner full of Mimean food, which is heavily meat-based.
• In Gifts of Wandering Ice, hunter tribe celebrates "Fire Festival" when chief's daughter comes of age in case she had decided not to marry. She chooses a father for her child there.
• Girl Genius: The winter Solstice is celebrated in Mechanicsburg as a multi-day festival and holliday called Jägerstomp. The December 2020 side story focuses on the holliday.
• The Megatokyo 2012 calendar included several holidays connected to the themes of the comic (Day of the Ninja, Magical Girl Awareness Day, etc.) The day chosen for each was the anniversary of a relevant Megatokyo strip.
• In Monsterful we get the "Monster unity day" instead of Halloween, a day where peace and unity of all monsters is celebrated by dressing as other monster species, which is quite normal considering the setting of the comic is a monster-only world.
• In Triquetra Cats, the Antreyki celebrate Go, a harvest festival style holiday that combines elements of Halloween, Thanksgiving, and Christmas. The main symbol of the holiday is a pumpkin carved with the family symbol topped with an evergreen wreath and harvest fruits a la a cornucopia.
• Unsounded: There are four major holidays a year in Kasslyne, each a feast day for one of the four Twin Gods and marked with the ritual sacrifice of a younger twin. The first book ends on Tirna's Day or Treenahinn, the fall day dedicated to the Trickster God Trina.
• The Wondermark 2012 calendar included several of these, suggested by readers. They can all be found at http://wondermark.com/holidays2012/

Web Original

• Britsune Garden has a whole collection of fictional holidays, though it also uses real-world traditional Japanese festivals such as Bon and Tanabata. Fuyu Matsuri (translates to "Winter Festival") is a well-known holiday, being similar to Christmas (giving presents, decorating natural and synthetic pine trees, etc.) except it has a wholly different origin story.
• In Crossing Kevin's Crossing, residents of the titular town celebrate Carley Hawkins Day on March 24th. Carley Hawkins died of an allergic reaction eating a peanut butter and jelly sandwich. So on the anniversary of her death no one eats peanut butter.
• The Cry of Mann has Trool Day, which is apparently a very important holiday for the people in the story's universe. The details are vague, but it's known that people eat lemon muffins and send blue letters in celebration.
• In Death Note: The Abridged Series (kpts4tv), as a result of the MadLibs contest the cast celebrates "I'm Not Going To Take It Anymore Day."
• Neopets has a bunch of them:
  • There's a day dedicated to each Neopet species (e.g. Bori Day, Lenny Day).
  • Sloth Appreciation Day, dedicated to a Mad Scientist named Dr. Sloth.
  • Jhudora Day, celebrating a dark faerie.
  • Gadgadsbogen (which translates to Good Good Day), a festival celebrated on Mystery Island to celebrate the harvest of fruit.
  • Illusen Day, which falls on St. Patrick's Day but doesn't seem to have much to do with it, and it's dedicated to Jhudora's rival, an earth faerie.
  • Grey Day, the anniversary of the time Baelia lost her powers, and a very mournful holiday.
  • Tyrannian Victory Day, which celebrates the Tyrannians winning the War of the Obelisk.
  • Fyora Day, dedicated to the queen of the faeries.
  • Petpet Appreciation Day, which focuses on the creatures pets keep as pets.
  • The anniversaries of the discovery of Meridell and Brightvale.
  • The Annual Usuki Doll Convention.
  • Mutant Day, which is dedicated to the transmogrified pets Dr. Sloth created.
  • The Annual Chocolate Ball.
  • The Faerie Festival, during which everyone can eat at the Soup Kitchen and the Healing Springs always work.
  • Two sporting events: the Annual Gormball Championships and the Altador Cup.
  • Symol Day, which is dedicated to mole-like petpets.
  • Slorg Day, which is dedicated to slug-like petpets.
  • The anniversary of the site itself, which is treated as similar to a birthday.
  • Borovan Day, where everyone drinks borovan, i.e. hot chocolate with asparagus in it.
  • The Festival of Neggs, which is similar to Easter, only there really is a bunny, and it's not chocolate eggs, it's a peculiar egg-shaped fruit.
• In Ultra Fast Pony, it's a recurring joke that these holidays don't have consistent names. So, in "Utter Lunacy", they celebrate a night that's known either as Halloween, Scaremas, or Scary Give Candy Night. And in "Pirate Shipping" the day is called Heartsgiving or Love Dependence Day.
• Video Game High School has L33tmas, a combination of pretty much every holiday you can think of.

Western Animation

• In American Dad!, Steve tells Stan and Francine that he saw Roger heading into Stan's study with a watermelon and a giant hammer. Francine, thinking Roger has a good explanation, asks Stan if it's Gallagher Day. Stan angrily asks her "do you see a Gallagher Tree, Francine?!"
• Arcane: Piltover's Progress Day which celebrates the city's founding and scientific spirit with a festival showcasing the newest innovations and traditionally finished with a keynote speech by Heimerdinger.
• In Arthur:
  • Elwood City celebrates the annual "Elwood City Strawberry Festival", which consists of parades, contests, and all sorts of foods featuring strawberries.
  • There's also Librarian's Day, which D.W. uses as an excuse in "Cereal" to eat her cereal she was saving for a special occasion. It actually existed, but D.W. was seizing the opportunity.
  • Elwood City also has "Bug Week", a week dedicated to celebrating insects of all kinds. It’s a highly popular and anticipated event.
• In Avatar: The Last Airbender, Aang and co stumble upon a village celebrating "Avatar Day".
• Barbie: Life in the Dreamhouse had its third TV special set on Sisters' Fun Day, on which the sisters of Malibu participate in various family-bonding activities.
• In the world of Clone High, all religious holidays have just been banned by the United Nations and Christmas has been replaced with the secular wintertime celebration Snowflake Day. People greet each other with "Jolly Snowflake Day", the traditional meal is lamb tacos, a pirate named Snowflake Jake is said to deliver gifts of spices to good children, and the standard traditional dance is the cabbage patch.
• An episode of Daria had the eponymous character run into anthropomorphic holidays - including Valentines Day, St. Paddy's Day, Halloween, and Guy Fawkes Day. As it was primarily an American (MTV, at that) series, most viewers probably thought the last one was fictional. It's not.
• Donkey Kong Country has the Kongo Bongo Festival of Lights, which is basically half related to Christmas, half a truce between Kongs and Kremlings.
• In one episode of The Doozers they learn the origins of Spookypalooza, the Doozer Creek counterpart to Hallowe'en.
• The Fairly OddParents!. Timmy's alien friend celebrates FLARG, which culminates in him blowing up Earth.
  • Well, it's supposed to be the host planet.
• Family Guy:
  • The episode "Road to the Multiverse" opens with the Griffins attending a carnival for Quahog's annual Clam Day.
  • In "FOX-y Lady", Lois and Brian are given a tour of the Fox News facility, and their guide mentions that most of the employees are off for Martin Luther King Day. When Brian points out that it's not January, the guide clarifies that their MLK Day is the day he died.
• In "Franklin Migrates" from Franklin, Franklin's friend Goose invites him to a Migration Eve party. He doesn't know what that is and she explains that although her own family doesn't migrate, each year they celebrate at their home with other geese that do. Franklin accepts her invitation, but begins to worry that he won't fit in. When he actually gets to the party, his worries seem to come true to him when it seems like Goose's grandfather doesn't like his jokes and then Goose's grandmother asks him to lead them in the Migration Eve dance. He runs away, and Goose says he's probably looking for the bathroom. She then finds him and he admits his worries. She tells him that nobody expected to actually know, that her grandma only wanted to teach him the dance, and that her grandfather's just grumpy because Franklin's jokes are funnier than his. Hearing this, Franklin finally relaxes and is able to enjoy the rest of the party, which is really just a friendly evening of dancing, eating good food and sharing stories.
• Futurama:
  • There's a day called Freedom Day.
  • "Mother's Day" reveals that there's a celebration called Mother's Day, but it's not the day we know and love. Instead, it's dedicated to honouring the creator of the robots (so-called because her stage name is "Mom").
• Garfield and Friends:
  • In a U.S. Acres episode, there is "National Don't Mention Meat or Someone Will Hit You with a Banana Cream Pie Day." which is Exactly What It Sayson The Tin.
  • In another episode, there is "Hit a Duck in the Face with a Lemon Meringue Pie" Day. When, unlike other characters, Roy won't settle for hitting Wade just once, Wade writes a letter to the Congress asking for a Holiday to hit roosters with mud and it gets passed the same day the pie one. Roy and Wade go so far Orson decides to punish them. Roy and Wade then get the Congress to pass a Holiday to paint pigs purple.
• Gravity Falls has Pioneer Day which does actually correspond to similar throwback days of some small towns. They also have Summerween, because the city likes Halloween so much they celebrate it twice.
• Jorel's Brother: In the Season 1 episode "Jornada Matinal Implacável", Jorel's brother spends the entire episode trying to get to school on time, but when he arrives, he finds out that there's nobody there because they're celebrating a holiday known simply as "Year Day", which exists simply to celebrate the fact it's just a regular day. There's shown to be a party with many citizens celebrating the day, yet for some reason, neither Jorel's brother or his family were aware of it.
  • In the Season 3 episode "Carnaval a Qualquer Momento", Jorel's brother proposes the exact same holiday as a new one, despite being real in the show's universe in its introduction.
• The first episode of Marvel Mash-Up shows Spider-Man and Iceman celebrating "Flying Car Parts Day".
• In the Animated Adaptation of Milly, Molly, there's Ride-to-School Day, in which all the students must commute to school by bike.
• Mike, Lu & Og has the Albonquetinians celebrate various holidays of their own, such as Lady Hewitt Smythe Day (celebrated with an elephant croquet match), All Foodstuff's Eve (an expy of Thanksgiving) and the First Day of Spring (where a chosen individual ears a giant nose over his/her head and leads the islanders in smelling every flower on the island).
• My Little Pony: Friendship Is Magic has both expies of Earth holidays with Nightmare Night (Halloween) and Hearts and Hooves Day (St. Valentine's Day) and its own original holidays like the Summer Sun Celebration and Winter Wrap-Up. Hearth's Warming Eve kind of straddles the line by being obviously a Christmas expy of sorts in practice if not so much in terms of actual backstory, which makes it more of a country founding celebration.
  • This is taken further in the episode "Hearth's Warming Club", where we learn that since Hearth's Warming Eve is an Equestria-centric holiday, other species' new year celebrations are all different. Yaks celebrate Snildar Fest. Dragons "celebrate" the Feast of Fire, which is a competition where every dragon that shows up gathers around a big fire and tells stories to win the prize of a pile of gemstones. Whatever the Hippogriffs had before the movie was expanded into the "Three Days of Freedom" festival, which celebrates the defeat of the Storm King. Griffons have the Blue Moon Festival, which Gallus describes as "the one time of the year where Griffons are nice to eachother, well, as nice as we can be...". He doesn't go into detail on what it's really about.
• Ninjago has the "Day of the Departed", which is an awesomely bizarre mashup of Halloween (costumes and trick or treating), Dia De Los Muertos (remembering loved ones that've passed), and a Japanese lantern festival. It originally aired on October 29th, so fans have taken to celebrating the holiday on that date in real life as a Halloween pre-game of sorts.
• The Patrick Star Show: "Klopnodian Heritage Festival" revolves around the titular event. It's an annual celebration of those coming from Klopnod, a fictional location that's said to be the silliest place in the ocean. It involves practicing their bizarre ancient traditions and eating their disgusting food.
• The Powerpuff Girls (2016) substitutes Christmas with Generic Tree-Lighting Day in the episode "You're a Good Man, Mojo Jojo."
• Ren & Stimpy had Yak Shaving Day. The celebration involved decorating the house with disposable diapers, filling your boots with coleslaw, and leaving a bowl of hot lather by the bathroom sink. If you're good, the Great Shaven Yak will come until your home through the bathtub and leave fresh shaving scum in the sink before going back to canoeing across the night sky.
• Clearance Day in Sheep in the Big City.
• Several examples have popped up on The Simpsons:
  • Whacking Day is an annual tradition in Springfield in which the townspeople gang up on snakes and beat them to death with clubs. Lisa is seemingly the only one in town who finds the pratice to be needlessly cruel, and with Bart's help she eventually uncovers the fact that the tradition only started in 1924 and was originally an excuse to beat up Irish people.
  • In the episode "Bart's Inner Child", a self-help guru causes the entire town to adopt Bart's "do what you feel" attitude, culminating in the Do What You Feel Festival. News anchor Kent Brockman makes a brief reference to the previous Do What We Say Festival, which was started by "German settlers" in 1946.
  • There's also the Jellyfish Festival (third Tuesday of May Sweeps) to celebrate the annual return of the Stinging Red Jellyfish to Springfield.
  • In Season 11's "Missionary Impossible," Bart is reprimanded by Mr. Burns – who confuses him for Homer – for Homer "taking the Hamburglar's birthday off" ... on two different days (Monday and Wednesday ... "which is it?")!
• The Smurfs (1981) has Rainbow Day, in which the Smurfs celebrate the appearance of a rainbow in the sky on a specific day of the year. There's also the Feast Of Plenty, which is the closest thing they have to Thanksgiving, the Firefly Festival, in which a Smurf must go to the Great Swamp to light a torch with the Foxfire to light up a firefly pinata before the end of the second day, and the infamous Hug-A-Smurf Day which Grouchy hates. Of course, there's every Smurf's least favorite holiday, Unhappiness Day, where UnHappiness Is Mandatory for a full day. And then there's the Spring Day Pageant, the celebration in the anti-drug episode "Lure Of the Orb."
• In SpongeBob SquarePants, National No SpongeBob Day. Also, one episode has National Free Balloon Day, which SpongeBob and Patrick were unaware of, so they thought they'd stolen a balloon.
• Star vs. the Forces of Evil: Mewnipendence Day celebrates when the Mewnis gained their independence... by invading a foreign land, kicking out all the native inhabitants, and then slaughtering the natives when they tried to come back. Every year they reenact the Great Monster Massacre, when the Mewnis "heroically" defeated the unarmed monsters with their vastly superior magic and soldiers. Also, there's corn. It's like Thanksgiving with all of the imperialistic subtext front and center and none of the positive parts.
• Star Wars Rebels has Empire Day, celebrating the founding of the Galactic Empire fifteen years previously. Ironically, it's also Ezra's fifteenth birthday.
• Starfire of Teen Titans once attempted to celebrate a "festival of friendship" from her home planet Tameran, but it didn't quite take with the rest of the team.

Real Life

• The calendar is littered with official days declared by the government, but you don't get to stay home. One that's been in the news recently has been National Nude Hiking Day, which coincided with Governor Sanford's purported hike down the Appalachian trail.
• Talk Like a Pirate Day.
• Mole Day, celebrated on October 23rd from 6:02 am to 6:02 pm. A geek-holiday, Mole Day celebrates Amadeo Avogadro's "molar number" (6.02 x 10^23, get it?).
• Similarly Pi Day, celebrated March 14th with, well, pie.
• International Pancake Day! Some restaurants actually participate and serve you pancakes for dessert. YUMMERS.
• May the Fourth be with you
• Global Smurfs Day, which happened to be on Peyo's birthday, was celebrated a few times since 2011, when The Smurfs movie was released.
• Pretty much every product or food/drink type has a holiday these days, and often more than one. For example, there's International Beer Day, National Beer Day, days dedicated to a particular style of beer (stouts, lagers, and sours all have individual days to name a few). At last count there were at least 22 days that specifically celebrated beer in some form.

Holidays Made Up by a Character:

Anime & Manga

• In Doraemon, Nobita uses one of Doraemon's future gadgets to declare "Do Nothing Day". Hilarity Ensues.

Comic Books

• Laff-A-Lympics #13 has the fictional holiday National Prune Yogurt Day. It was made-up by the Rottens so they can deliver a booby-trapped box of prune yogurt to the Yogis, but Yogi (not knowing it's booby-trapped) delivers it to the Scoobies to commemorate the holiday, and Scooby-Doo delivers it back to the Rottens.

Comic Strips

• In Peanuts, Schroeder didn't make up Beethoven's birthday per se, but he decided to turn it into an observance. It's December 16th, by the way.

Fan Works

• Mall Rats: When Lincoln finds out that his crush, who is much older than him, is the cousin of his classmates, he fears the classmate will bring her to school for Bring Your Cousin to Work Day.

Films — Animation

• In Monsters, Inc., Sulley and Mike pretend that Boo is Sulley's cousin's daughter and it's "Bring an Obscure Relative to Work Day".

Films — Live-Action

• Woody Allen's Take the Money and Run has his character escaping from a prison chain gang along with several fellow prisoners to whom he's still chained. At one point they force their way in to an old woman's house to take some food and civilian clothes, and while they're there a sheriff's deputy drops by. Allen's character tells the deputy that he and the others are the woman's cousins, visiting her for "the holiday".
  Deputy: (suspiciously) What holiday?
  Allen: Did you ever hear of St. Abernathy's Day?
  Deputy: No.
  Allen: That's what we're here for.

Literature

• Old Bear: In one book, the characters find Little Bear's lost trousers and make up "Trousers Day" to celebrate.
• In Yes Day, the boy invents "Yes Day", where all yes/no questions must be answered with a yes. He also invents No Day, Actually I Am the Boss of You and My Answer is No Day, What Part of No Do You Not Understand Day, Go Ask Your Father Day, Go Ask Your Mother Day, and When Pigs Fly Day.

Live-Action TV

• In the 30 Rock episode "Secret Santa," several of the show's staff invent the religion Verdukianism in order to get out of participating in Kenneth's Secret Santa exchange, and when Kenneth buys it, proceed to milk it for all it's worth:
  Kenneth: Tonight is the Verdukian Holiday of Mouth Pleasures. Misters Rossitano, Spurloc, and Lutz must have three sausage pizzas followed by some flossing performed by a blonde virgin.
• Aliens in the Family: Spit doesn't want to get in trouble for eating his own homework, so he lies to everyone and says he didn't do his homework because he was getting ready for an alien holiday called Tweeznax.
• In The Andy Griffith Show episode "Alcohol and Old Lace," two sweet old ladies who are operating a still (in a dry county) excuse themselves by explaining that the moonshine they sell people is meant not for "guzzling," but for "celebrating." Some of the holidays their customers suggest they may be celebrating include Sir Walter Raleigh Landing Day, Muhammed's birthday (observant Muslims are not supposed to drink alcohol), and National Potato Week.
  Andy: Those aren't what you'd call legally recognized holidays.
• In How I Met Your Mother, Barney creates one after a pregnancy scare from one of his many one-night stands, appropriately named Not-a-Father's Day, coming up with a whole set of merchandise to celebrate it.
• Lexx: When Stanley Tweedle blows up the nearest planet, an obstinate brothel satellite manager suddenly "remembers" that he offers free samples on "Bob's Comet Day."
• In order to placate the petulant Prince John of Maid Marian and Her Merry Men, The Sheriff of Nottingham fabricates a modern-Christmas-like holiday called Bloopy: Amid festive decorations and singing, peasants go to Father Bloopy (Prince John)'s grotto and sit on his knee, and he asks them what he wants for Bloopy. They then have to give him a present, or be thrown in the dungeon.
• In The Neighbors, Larry creates "Challoweenukah," a combination of Halloween and Hannukah.
• In The O.C., Seth's family celebrates "Christmukah," a combination of Christmas and Hannukah.
• Seinfeld: Frank Costanza invented the holiday of Festivus as an alternative to Christmas, announcing "Festivus for the rest of us!" Instead of a Christmas tree, it has a bare aluminum pole because of its high strength-to-weight ratio. Before the Festivus meal is the annual Airing of Grievances, which is apparently just Frank yelling at his family. After that are the Feats of Strength, in which he wrestles with George. This all contributed to George's Hilariously Abusive Childhood. However, Kramer likes the idea and starts to celebrate the holiday with the Costanzas. Least until he actually sees it in action, to which he declares it too weird even for him.
• In Star Trek: Deep Space Nine, O'Brien once makes up "I'm Married to the Most Wonderful Woman in the Galaxy Day" to cheer up his wife.
• In Star Trek: The Next Generation episode "The Pegasus", an elementary schoolteacher makes up "Captain Picard Day" for her students to honor Picard. He finds this embarrassing, and when Riker teases him about it, Picard suggests giving him a taste of his own medicine by making a "Commander Riker Day".
  • This is apparently the inspiration for "Captain Freeman Day" aboard the Cerritos on Star Trek: Lower Decks.
• Neelix made up the celebration of Ancestors Eve in the Star Trek: Voyager episode "11:59".

Video Games

• Discussed in a Licensed Game for Sesame Street, where Murray wonders if it was Play in the Mud Day at the zoo to try to explain why the animals are so muddy.

Web Comics

• The webcomic Ctrl+Alt+Del has Winter-een-mas, the January holiday invented by Ethan to celebrate video games. It turned into a surprise hit and even led to a brief kidnapping plot when a corporation wanted to take advantage of its popularity. Winter-een-mas is even celebrated in Real Life by some fans.
• Gav and crew invent Agnostica in Nukees. It has been thoroughly defictionalized by fans of the strip and by the real Gav.
• Times Like This: Cassie attempts to create "Cattle Bell Day" in 1853 (this also doubles as a Shout-Out to Opie & Anthony).

Web Original

• The Chronicles Of Vocaloid Randomness: Luka has created a holiday called Tunafest which takes place every day to worship tuna.
• Economy Watch: In Episode 31, David comes up with an alternative to Black Friday given the amount of variants that exist, including Cyber and Green Monday. His new holiday is Discounted Three Tuesdays Later, and he shot a VHS advert for it as well.
• In Idiotsitter, the Russel family celebrates Fight Day-Ocho de Octo:every year on the 8th of October, they beat each other with therapy bats to relieve tension. One such celebration is the plot of episode 5, "Fight Day."
• SF Debris presents two characters as having these, both in Star Trek: Voyager:
  • Chakotay does this when his fictional Native American holiday requires him to take a shuttlecraft out of communications range, despite spacecraft not being a major feature of Native American tribal culture, and this distance being greater than could be achieved without leaving planet Earth. He guesses it's a way to avoid the planetary exploration the rest of the crew is engaged in, that supposedly involves cataloging a huge variety of gross creatures.
  • Captain Janeway has a daily holiday named "Condescending Bitch Day", where she picks one member of the crew and makes them the focused target of her scorn. The usual target is Harry Kim, but anyone is viable.

Western Animation

• The Amazing World of Gumball:
  • Gumball is so depressed by post-Christmas blues that he invents a holiday for January. On Sluzzle Tag, one plays Grindcore carols, puts up barbed wire and guitars, and waits for Sluzzle Dude (who has a long beard, sneakers, and a leather jacket) to come up through the toilet to deliver gifts.
  • "The Father" opens with the Wattersons inviting Frankie over to celebrate Vermin Man Day, a holiday made up by Granny Jojo meant to distract Richard from the day Frankie walked out on the both of them. It involves singing a cheerful song about how awful the Vermin Man is and to never marry him because he'll ruin your life and walk out on you. At the end of the song, they burn an effigy that vaguely looks like Frankie.
• Arthur:
  • One episode revolves around the kids making up a holiday to fill the gap between Christmas and Valentine's Day. Ideas bandied about include "Pony Day", "There's Nothing to Do Today Day", "Igneous Rock Day", and "Give Me Candy Day", the last one thought up by Buster, where everyone in town specifically gives him (Buster) candy.
  • There's also "Baxter Day", which Buster makes up for his mother to celebrate instead of Christmas, because it was stressing her out. It mostly consists of the two just hanging out and doing whatever they feel like.
• Futurama:
  • Bender made up Robanukah as an excuse for not working. The characters later decide to actually celebrate it — by "doing the robot dance", with Jewish music playing in the background.
  • The episode also mentions before that he made up Robanza.
  • The non-canon "Futurama Holiday Spectacular" episode also features Robanukah as one of the three main holidays celebrated along with X-Mas and Kwanzaa. Of course, given what is established above, and the fact that the episode was not canon it doesn't change anything about the holiday being fictional.
• Dilbert has Dogbert Day, which Dogbert manages to get signed into federal law as a replacement for all other holidays. Besides taking the salient features of those holidays (a parade, gift-giving and mall Dogberts), it has its own set of traditions such as uncomfortable headgear, a feast of bald eagle, and a drum solo played on the skull with spoons (and, if the Pointy-Haired Boss is to be believed, a Virgin Sacrifice).
  Dilbert: Do you think anyone will catch on to the fact that the entire Dogbert Day holiday is designed for the sole purpose of being annoying?
  Dogbert: No one caught on when I invented National Secretaries Day.
• Doc McStuffins: In "A Day Without Cuddles", Doc invents International Cuddle Day, which involves cuddling and prefixing random nouns with "cuddle". Chilly mishears the festival as International "Puddle" Day, and wants to celebrate that by jumping in rain puddles.
• Doug has a subversion to it. Doug imagines his alter ego Quail-Man fighting a villain who wants to get rid of the weekdays. In the end, not only does he foil his plans, but creates a whole new weekday known as Funday in the process. This was accomplished by slowing the Earth's rotation, which somehow made the week eight days long instead of days longer.
• Garfield and Friends: In one U.S. Acres episode, Roy makes up "National Tapioca Pudding" Day to pull a prank on Orson.
• In "Summerfuntastic Day" from If You Give a Mouse a Cookie, Cat has a bad case of the "between-holidays blues," so the other characters create "Summerfuntastic Day" to cheer him up and break him of his newfound habit of staring at things lacking their holiday decorations and sighing.
• In Johnny Test, Johnny, Dukey, Susan and Mary decide to try and create a new candy-giving holiday in summer to fill in the dry season between Easter and Halloween. After several attempts fail due to one reason or another, they succeed in creating Bee Happy Day, where the now allied Beekeeper has his swarms of bees deliver Piles o' Honey bars across the world for everyone to enjoy.
• My Little Pony: Friendship Is Magic: In "Baby Cakes", Pinkie Pie celebrates the Cake twins' "month-iversary", where they turn one month old, and in "It Isn't the Mane Thing About You", she celebrates their "sneeze-iversary", which is the anniversary of their first sneeze.
• Pinky and the Brain: In "Snowball", Brain tries to stop Snowball from taking over the world with a chain letter scheme by getting the government to acknowledge "Wink Martindale Day" to shut down the post offices.
• The Simpsons:
  • In "Homer The Heretic", when Homer makes up his own religion, he calls into work saying he can't come in because he's celebrating the "Feast of Maximum Occupancy" (he was in Moe's and read it off of a sign.)
  • In "Flaming Moe's":
    Mayor Quimby: Henceforth, this date shall forever be known as Flaming Moe's Day!
    Advisor: Uh, sir, this is already Veterans' Day.
    Mayor Quimby: It can be two things!
  • In "Bart's Girlfriend", Principal Skinner makes up "Scotchtoberfest" as part of a sting to catch Bart in the act of breaking the rules. Groundskeeper Willie is not pleased upon finding out that it was not in fact a real holiday.
    Skinner: Congratulations, Simpson. You just fell for our sting, and won three months detention. There's no such thing as Scotchtoberfest!
    Willie: (distraught) There's not?!? Ya used me, Skinner! Ya used me!!!
    • His anger is perhaps understandable given the fact that the sting involved Bart subjecting him to a Marilyn Maneuver.
  • In "Trash Of The Titans", the greeting card business was upset over there being no holidays requiring greeting cards during the summer interval and they were losing money as a result, so what do they create as a solution? Love Day!
• SpongeBob SquarePants:
  • "Hey everyone! It's Leif Erikson Day!" Which, it should be noted, is an actual holiday, though not of importance enough to be listed on a calendar.
  • SpongeBob also invents Annoy Squidward Day.
• Starfire of Teen Titans once invented "Gorp Gorp, the Tameranian holiday of berating drapery" as a cover story. Given the fact that she comes from an alien culture, she pulls it off.
  Starfire: Stupid Curtains!

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