April Fools' Day or All Fools' Day although not a holiday in its own right, is a notable day celebrated in many countries on April 1.
(The day after Thanksgiving, or any Friday the13th) Black Friday is the Friday after Thanksgiving in the United States, where it is the beginning of the traditional Christmas shopping season. Since Thanksgiving falls on the fourth Thursday in November in the United States, Black Friday may be as early as the 23rd and as late as the 29th of November.
Bloomsday is a commemoration observed annually on 16 June in Dublin and elsewhere to celebrate the life of Irish writer James Joyce and relive the events in his novel Ulysses, all of which took place on the same day in Dublin in 1904.
Bubble Gum Day - (February 1)
(The Day after Thanksgiving) - Buy Nothing Day is an informal day of protest against consumerism observed by social activists. It was founded by Vancouver artist Ted Dave and subsequently promoted by the Canadian Adbusters magazine. The first Buy Nothing Day was organized in Vancouver in September of 1992 "as a day for society to examine the issue of over-consumption.
December 24, is the day before Christmas Day, the celebrated birthday of Jesus. In the Western Christian Churches, the Christmas season liturgically begins on Christmas Eve, and is preceded by a four-week fast called Advent.
International Caps Lock Days
28 June and 22 October are annually marked as International Caps Lock Days as a parody holiday first noted in 2000.
A annual holiday invented by writer Dan O'Keefe and introduced into popular culture by his son Daniel, a scriptwriter for the TV show Seinfeld. Although the original Festivus took place in February 1966 as a celebration of O'Keefe's first date with his wife, Deborah, most people now celebrate the holiday on December 23, as depicted on the December 18, 1997 Seinfeld episode "The Strike".
First Contact Day
(5 April) (The day Vulcans establish first contact with humanity) - Star Trek: First Contact is a 1996 science fiction film and the eighth feature film based in the Star Trek fictional universe.
(first Sunday in August) - The tradition of dedicating a day in honor of friends began in US in 1935. Gradually the festival gained popularity and today Friendship Day is celebrated in large number of countries. On this day people spend time with their friends and express love for them. Exchange of Friendship Day Gifts like flowers, cards and wrist bands is a popular tradition of this occasion.
(The Wednesday during Geography Awareness Week in November) - GIS Day is a grassroots educational event that enables geographic information systems (GIS) users and vendors to open their doors to schools, businesses, and the general public to showcase real-world applications of GIS. GIS Day is a global event. Organizations all over the world that use GIS, or are interested in GIS, participate by holding or sponsoring an event of their own.
(20 April) 420, 4:20 or 4/20 (pronounced four-twenty) refers to consumption of cannabis and, by extension, a way to identify oneself with cannabis subculture. The notable day for these is April 20. (Not to be confused with J-Day, an international protest held on the first Saturday of May.)
International Dadaism Month:
A month of celebrating the Dada movement. On 27 December 2005, Mayor Dennis "Boog" Highberger of Lawrence, Kansas proclaimed International Dadaism month. However, in Dada spirit, Highberger did not select a specific month to celebrate Dada. Instead he proclaimed International Dada month as 4 February, 28 March, 1 April, 15 July, 2 August, 7 August, 16 August, 26 August, 18 September, 22 September, 1 October, 17 October, and 26 October. Highberger and Cypress Frankenfeld selected the dates by first rolling dice to determine the number of days, then pulling numbers corresponding to every day in the year (1-365) from a colorful top hat.
International Scurvy Awareness Day
(19 September) - International Talk Like a Pirate Day (ITLAPD) is a parodic holiday invented in 1995 by John Baur ("Ol' Chumbucket") and Mark Summers ("Cap'n Slappy"), of Corvallis, Oregon, who proclaimed September 19 each year as the day when everyone in the world should talk like a pirate. For example, an observer of this holiday would greet friends not with "Hello," but with "Ahoy, me hearty!" The holiday, and its observance, springs from a romanticized view of the Golden Age of Piracy.
International Yak Day (April 29)
On this day, people are encouraged to dress as ninja, engage in ninja-related activities, & spread information on ninja online. December 5 was originally chosen because December 5, 2003 marked the release of Tom Cruise's film The Last Samurai (which featured a scene where samurai battled ninja). Since then the focus has shifted towards the more familiar Pirates versus Ninjas conflict, & the day has served as a virtual counterpoint to International Talk Like a Pirate Day .
(3rd Monday in April, a sidenote to Patriot's Day) - The Boston Marathon is an annual marathon sporting event hosted by the city of Boston, Massachusetts, on Patriots' Day, the third Monday of April. Begun in 1897 and inspired by the success of the first modern-day marathon competition in the 1896 Summer Olympics, the Boston Marathon is the world's oldest annual marathon and ranks as one of the world's most well-known road racing events. It is one of five members of the World Marathon Majors.
(30 October) - Mischief night is a tradition in northern England, Scotland, Ireland, and the United States of a night in the calendar when the custom is for preteens and teenagers to take a degree of license to play pranks and do mischief to their neighbors/neighbours.
Mole Day is celebrated among chemists in North America on October 23, between 6:02 AM and 6:02 PM, making the date 6:02 10/23 in the American style of writing dates. Many high schools around the United States and in Canada celebrate Mole Day as a way to get their students interested in chemistry, with various activities often related to chemistry or moles. Some schools celebrate Mole Day on June 2 (6/02 in MM-DD format) and occasionally February 6 (6/02 in DD-MM format), rather than October 23 (10/23), presumably from 10:23 AM to 10:23 PM. Often either of these is instituted as a "second" mole day for schools that run on semester rather than yearly basis, to give both semesters' worth of students an opportunity to celebrate. * Some schools celebrate "Mole Week" around October 23.
The American Chemical Society sponsors National Chemistry Week, which occurs from the Sunday through Saturday during October in which the 23rd falls. This makes Mole Day an integral part of National Chemistry Week.
Celebrated internationally on December 14. The holiday is primarily celebrated with costume parties intended to help draw attention to issues related to simians, including medical research, animal rights, and evolution. The holiday also cuts across religious boundaries and provides opportunities to share monkey stories
National Gorilla Suit Day
Gorilla suits are recognized through National Gorilla Suit Day, January 31. The holiday was concocted by MAD cartoonist Don Martin in a 1963 paperback Don Martin Bounces Back!. The most notable story in the tome revolves around a hapless fellow named Fester Bestertester, who dares to mock the concept of National Gorilla Suit Day and is thus repeatedly pummeled by gorillas. The holiday was recently promoted on comic book writer Mark Evanier's news from me blog until Don Martin's widow request that all references to the holiday be removed in late 2007.
National Hugging Day
National Hug Day or National Hugging Day is an annual holiday that occurs on January 21 and is officially recognized by the United States Patent and Trademark Office. The holiday has since spread to multiple different countries. The purpose for the holiday is to help everyone show more emotion in public. Offer a hug to anyone and everyone you want.
(first Friday of May) - No Pants Day is an international holiday occasionally observed in several Western and other countries on the first Friday in May by not wearing any pants (trousers). The use of the word pants is the American English version meaning trousers (the item of clothing covering both legs worn as the outermost garment). According to the FAQ, it is mainly "a fun-filled holiday", but "from the core idea comes so much more": The recommended No Pants Day attire is thick, appropriately modest boxer shorts. Other types of underwear, including bloomers, slips, briefs, and boxer briefs all work as well.
(random date, most often 25 January) - Opposite Day is a holiday which is celebrated by many schoolchildren, though often in an irregular fashion and not on any pre-determined day of the year. Typically, when Opposite Day is declared, statements always mean the opposite of what they say. In the sense that it would "excuse" untrue statements, it is related to the notion that crossed fingers automatically nullify promises.
(14 March) or Pi Approximation Day (22 July) - Pi Day and Pi Approximation Day are two holidays held to celebrate the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in American date format), due to π being equal to roughly 3.14. The first Pi Day celebration was held at the San Francisco Exploratorium in 1988, with staff and public marching around one of its circular spaces, and then consuming fruit pies; the museum has since added pizza pies to its Pi Day menu. People who celebrate Pi Day usually celebrate Mole Day & Square root day as well.
Robert Burns Day / Burns Night/
A celebration of the life and poetry of the poet Robert Burns, author of many Scots poems. The suppers are normally held on or near the poet's birthday, 25 January, sometimes also known as Robert Burns Day or Burns Night (Burns Nicht), although they may in principle be held at any time of the year.
Burns suppers may be either formal or informal. Informal suppers typically include haggis (a traditional Scottish dish), Scotch whisky and the recitation of Burns' poetry. Formal dinners are hosted by organisations such as Burns clubs, the Freemasons or St Andrews Societies and occasionally end with dancing when ladies are present.
(Day of the National Football League championship) Over the years it has become the most-watched U.S. television broadcast of the year, and has become likened to a de facto U.S. national holiday.
S.A.D. -- (Single's Awareness Day)
(14 February) - is a humorous holiday celebrated on February 14 (although some prefer the 13th or the 15th to get away from the commercialism associated with the 14th). It serves as an alternative to Valentine's Day for people who are single: that is, who are not involved in a romantic relationship. Some observers of SAD do so out of spite for Valentine's Day, as a Hallmark holiday, or for other reasons. On Singles Awareness Day, single people gather to celebrate or to commiserate in their single status.
is an observance celebrated primarily in the Great Lakes region, and parts of the Northeast United States, on the third Saturday in October. It is described by Retail Confectioners International as an "occasion which offers all of us an opportunity to remember not only the sick, aged and orphaned, but also friends, relatives and associates whose helpfulness and kindness we have enjoyed
Tax Freedom Day
Tax Freedom Day is the first day of the year in which a nation as a whole has theoretically earned enough income to fund its annual tax burden.
Towel Day is celebrated every 25 May as a tribute by fans of the late author Douglas Adams. On this day, fans carry a towel with them to demonstrate their love for the books & the author, as referred to in Adams's The Hitchhiker's Guide to the Galaxy. The commemoration was first held in 2001, two weeks after Adams's death on 11 May 2001.
is celebrated every year on April 3 as a synchronized global mass celebration of a better world and the active creation of desirable reality.
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Other Unofficial Holidays:
* Autistic Pride Day
* Bark Mitzvah
* Black Day
* Blue Monday (date)
* Buy Nothing Christmas
* Celebrate Bisexuality Day
* Christmas in August (Yellowstone)
* Día de la Chupina
* Community Manager Appreciation Day
* Cyber Black Friday
* International Dadaism Month
* National Dark-Sky Week
* Darwin Day
* Data Privacy Day
* Day of Dialogue
* Day of Silence
* Distaff Day
* DNA day
* Everybody Draw Mohammed Day
* First Rain
* Foursquare Day
* Gay Blue Jeans Day
* Go Skateboarding Day
* Handsel Monday
* Honesty Day
* International Fetish Day
* World Kindness Day
* World Laughter Day
* Loot Day - Feb. 13
* Milk Day
* National Day of Listening
* National Nothing Day
* National Public Gardens Day
* Newman Day
* Nickanan Night
* Opening Day
* National Paper Airplane Day
* Primal Scream (Harvard)
* Record Store Day
* National Regifting Day
* School Day of Non-violence and Peace
* Senior Skip Day
* Sequential time
* Shutdown Day
* Singles Awareness Day
* Software Freedom Day
* Solstice Cyclists
* Spirit Day
* Square Root Day
* Star Wars Day
* International Students' Day
* Super Saturday
* International Surfing Day
* Tolkien Reading Day
* Valentine Phantom
* National Weatherperson's Day
* World Metrology Day
* World UFO Day
* X-Day (Church of the SubGenius)
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Unofficial Holidays are humorous, subcultural or student holidays and observances, that are annually practiced unlike those from category:
• Fictional holidays