Source-backedFixed AnnualIn-depth guide
Air Max Day
Nike identifies March 26 as Air Max Day, an annual celebration of Nike Air, and states that the day has been observed since 2014. Current Nike material continues to steward the observance.
Topic facet
Celebrations observances
Celebratory observances centered on shared occasions, social participation and recurring cultural moments.
About this facet
This facet groups observances whose main editorial signal is celebration. It can include community, cultural and informal occasions, so the underlying authority record still controls origin, scope and official status.
Use narrower topic and provenance fields when a date also belongs to food, family, faith, national or commercial contexts.
Scope note: A celebration label does not make an observance universal, official or a public holiday.
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Reviewed depth
In-depth guides in Celebrations
These pages include reviewed meaning, history, activities, facts and FAQs in addition to the underlying observance record.
Source-backedFixed AnnualIn-depth guide
Alien Day
20th Century Studios’ official Alien page preserves first-party “Alien Day” franchise videos; studio-backed franchise activity has used 26 April as Alien Day.
Source-backedFixed AnnualIn-depth guide
Appreciate a Dragon Day
Creator-linked and publishing references identify Donita K. Paul as the 2004 creator of Appreciate a Dragon Day and January 16 as its recurring date.
Source-backedEdition SpecificIn-depth guide
Assyrian New Year (Akito)
Kurdistan Region sources list Assyrian New Year (Akito) on April 1 in the 2026 official calendar, declare April 1, 2026 a regional government holiday, and preserve consecutive presidential…
Source-backedFixed AnnualIn-depth guide
Año Nuevo Andino Amazónico y del Chaco
Bolivia’s Supreme Decree No. 173 (2009) made June 21 an immovable nationwide holiday for the winter solstice, while Law No. 1128 (2018) declares June 21 of each year the Año Nuevo Andino Am…
Source-backedFixed AnnualIn-depth guide
Bathtub Party Day
The first-party Wellcat Holidays calendar lists Bathtub Party Day on December 5 and identifies the collection as created by Thomas and Ruth Roy; unsupported origin stories and unsafe or pri…
109 observances
All observances
Source-backedFixed AnnualIn-depth guide
Air Max Day
Nike identifies March 26 as Air Max Day, an annual celebration of Nike Air, and states that the day has been observed since 2014. Current Nike material continues to steward the observance.
Source-backedFixed AnnualIn-depth guide
Alien Day
20th Century Studios’ official Alien page preserves first-party “Alien Day” franchise videos; studio-backed franchise activity has used 26 April as Alien Day.
Source-backedFixed AnnualIn-depth guide
Appreciate a Dragon Day
Creator-linked and publishing references identify Donita K. Paul as the 2004 creator of Appreciate a Dragon Day and January 16 as its recurring date.
Source-backedEdition SpecificIn-depth guide
Assyrian New Year (Akito)
Kurdistan Region sources list Assyrian New Year (Akito) on April 1 in the 2026 official calendar, declare April 1, 2026 a regional government holiday, and preserve consecutive presidential…
Source-backedFixed AnnualIn-depth guide
Año Nuevo Andino Amazónico y del Chaco
Bolivia’s Supreme Decree No. 173 (2009) made June 21 an immovable nationwide holiday for the winter solstice, while Law No. 1128 (2018) declares June 21 of each year the Año Nuevo Andino Am…
Source-backedFixed AnnualIn-depth guide
Bathtub Party Day
The first-party Wellcat Holidays calendar lists Bathtub Party Day on December 5 and identifies the collection as created by Thomas and Ruth Roy; unsupported origin stories and unsafe or pri…
Source-backedFixed AnnualIn-depth guide
Be a Dork Day
The first-party Wellcat Holidays calendar lists Be a Dork Day on July 15 and identifies the collection as created by Thomas and Ruth Roy.
Source-backedFixed AnnualIn-depth guide
Be an Angel Day
Covenant House states that Be an Angel Day is celebrated annually on 22 August and was created by Jayne Howard Feldman in 1993; Punchbowl independently gives the same date, creator and 1993…
Source-backedVariable CustomIn-depth guide
Boat Racing Festival (Vientiane, Laos)
Lao News Agency documents the Vientiane Boat Racing Festival as an annual tradition tied to the end of Buddhist Lent and local organizing schedules. Gregorian dates are edition-specific and…
Source-backedRule Based AnnualIn-depth guide
Bob Wills Day
The official Bob Wills Day organizer and Turkey, Texas material identify the annual event and its last-Saturday-in-April tradition.
Source-backedFixed AnnualIn-depth guide
Boxing Day
GOV.UK current bank-holiday calendars list Boxing Day and substitute-day treatment across the UK. The Banking and Financial Dealings Act 1971 provides the statutory December 26 bank-holiday…
Source-backedFixed AnnualIn-depth guide
Calan Mai
Museum Wales and Wales.com identify Calan Mai on 1 May as a traditional Welsh seasonal celebration associated with the beginning of summer and regionally varied folk customs.
Source-backedVariable CustomIn-depth guide
Chiang Mai Yee Peng Festival
Thai government sources identify Yi Peng as a Lanna full-moon tradition and verify Chiang Mai Municipality/Province programming. The 2026 municipal edition is scheduled for 23–25 November;…
Source-backedFixed AnnualIn-depth guide
Day of the Dude
Dudeism identifies 6 March as its annual Day of the Dude, selected for the film’s theatrical release date.
Source-backedEdition SpecificIn-depth guide
Edinburgh’s Hogmanay
Official Edinburgh festival and destination sources identify Edinburgh’s Hogmanay as a multi-day New Year festival, state that the branded festival dates back to 1993, and list the 2026–27…
Source-backedFixed AnnualIn-depth guide
Fiestas de San Jerónimo in Masaya
Visit Nicaragua documents the San Jerónimo festivities in Masaya, including the major 30 September procession and later folkloric events.
Source-backedFixed AnnualIn-depth guide
First Contact Day
Official Star Trek sources mark April 5 as First Contact Day, explicitly frame the April 5, 2063 human–Vulcan encounter as fictional canon, document an official 2021 real-world fan event, a…
Source-backedFixed AnnualIn-depth guide
Fish Fingers and Custard Day
Official Doctor Who sources promote April 3 as Fish Fingers and Custard Day, say it commemorates the Eleventh Doctor’s first appearance, and date The Eleventh Hour premiere to 3 April 2010.
Source-backedFixed AnnualIn-depth guide
Foursquare Day (4SQDay)
Foursquare’s own material describes 4SQDay as an annual community holiday centered on April 16, with community events sometimes scheduled around that date.
Source-backedFixed AnnualIn-depth guide
Geek Pride Day
Spanish press coverage documents May 25 as Día del Orgullo Friki/Geek Pride Day and traces the organized Spanish observance to 2006.
Source-backedFixed AnnualIn-depth guide
Go Skateboarding Day
IASC press releases describe Go Skateboarding Day as the official annual holiday of skateboarding, observed worldwide on June 21.
Source-backedFixed AnnualIn-depth guide
Groundhog Day
National Weather Service and NOAA sources establish February 2, European/Candlemas roots, early U.S. documentation and the Punxsutawney tradition while treating shadow predictions as folklo…
Source-backedFixed AnnualIn-depth guide
Harbin International Ice and Snow Festival
Chinese government sources document successive Harbin International Ice and Snow Festival openings on January 5, including the 40th edition in 2024, 41st in 2025 and 42nd in 2026.
Source-backedVariable CustomIn-depth guide
International Astrology Day
Reference material attributes International Astrology Day to the Association for Astrological Networking and ties its date to the northward/March equinox rather than to one permanently fixe…
Source-backedRule Based AnnualIn-depth guide
International Beer Day
The official International Beer Day site states that the event is held on the first Friday in August and lists 7 August for 2026.
Source-backedFixed AnnualIn-depth guide
International Day of Awesomeness
The official International Day of Awesomeness site identifies Kevin Lawver as the creator, traces the idea to August 6, 2007, says the observance occurs every March 10, explains that the da…
Source-backedFixed AnnualIn-depth guide
International Pageant Day
Pageant Planet’s archived podcast published for International Pageant Day identifies April 8, and observance references consistently describe the pageant-community day as an annual April 8…
Source-backedFixed AnnualIn-depth guide
International Strange Music Day
Creator Patrick Grant’s own site identifies International Strange Music Day as August 24 and continues to publish annual observance entries, including the 28th annual event in 2026.
Source-backedFixed AnnualIn-depth guide
International Talk Like a Pirate Day
TIME documents International Talk Like a Pirate Day as an annual 19 September observance created by John Baur and Mark Summers in 1995.
Source-backedFixed AnnualIn-depth guide
Make Up Your Own Holiday Day
The first-party Wellcat Holidays calendar lists Make Up Your Own Holiday Day on March 26 and identifies Thomas and Ruth Roy as creators of the collection; no launch year or formal legal sta…
Source-backedFixed AnnualIn-depth guide
MAR10 Day / Mario Day
Nintendo official material verifies March 10 as MAR10 Day / Mario Day and the MAR 10 → MARIO visual wordplay; original creator, formal adoption year and first recurring edition remain unass…
Source-backedFixed AnnualIn-depth guide
Mickey Mouse Birthday
Disney first-party sources treat November 18, 1928—the release/premiere date associated with Steamboat Willie—as Mickey Mouse’s birthday convention and continue to mark November 18.
Source-backedEdition SpecificIn-depth guide
Midsummer Day
The Government Offices of Sweden public-holiday circular lists Midsummer Day on 20 June 2026.
Source-backedFixed AnnualIn-depth guide
Minnie Mouse Birthday
Disney first-party sources state that Minnie Mouse debuted alongside Mickey in Steamboat Willie on November 18, 1928 and treat November 18 as both characters’ birthday convention.
Source-backedFixed AnnualIn-depth guide
Mole Day
The National Mole Day Foundation observes Mole Day on October 23 from 6:02 a.m. to 6:02 p.m., using the 6.02 × 10^23 notation for the Avogadro constant as the date-and-time mnemonic; its hi…
Source-backedFixed AnnualIn-depth guide
Motherhood and Beauty Day
Armenia’s current holidays/remembrance law states that Motherhood and Beauty Day is observed on April 7. Historical ARLIS texts show a 1994 establishing decision and later removal of the no…
Source-backedFixed AnnualIn-depth guide
National Arabian Horse Day
Arabian-horse industry and observance registry sources identify the Arabian Horse Association of Arizona as founder and February 19 as the annual observance date.
Source-backedFixed AnnualIn-depth guide
National Be Late for Something Day
National Day Calendar identifies the Procrastinators’ Club of America, founded by Les Waas in 1956, as the body whose committee designated September 5 as Be Late for Something Day; Timeandd…
Source-backedFixed AnnualIn-depth guide
National Bobblehead Day
The National Bobblehead Hall of Fame and Museum says it developed National Bobblehead Day, submitted it for designation in December 2014, and celebrated the first annual observance on Janua…
Source-backedFixed AnnualIn-depth guide
National Break Up With Your Carrier Day
T-Mobile’s February 11, 2019 launch release and National Day Calendar’s founder proclamation establish February 13, 2019 as the first annual observance, T-Mobile as founder and the pre-Vale…
Source-backedFixed AnnualIn-depth guide
National Bubble Tea Day
Kung Fu Tea states that it founded National Bubble Tea Day on April 30, 2018, its eighth birthday, to celebrate the bubble-tea community; this verifies the modern observance, not invention…
Source-backedFixed AnnualIn-depth guide
National Cat Lady Day
CatCon states that founder Susan Michals created National Cat Lady Day in 2017 and that it takes place each year on April 19.
Source-backedFixed AnnualIn-depth guide
National Cheese Curd Day
Culver’s states that it created National Cheese Curd Day in 2015 and celebrates it every October 15.
Source-backedRule Based AnnualIn-depth guide
National Chess Day
US Chess identifies National Chess Day on the second Saturday in October and traces it to a 1976 Ford-era cultural acknowledgment resulting from Bill Dodgen’s efforts; its Ford Library rese…
Source-backedFixed AnnualIn-depth guide
National Chicken Finger Day®
Raising Cane’s states that founder Todd Graves created National Chicken Finger Day in 2010 and that it is celebrated on July 27.
Source-backedFixed AnnualIn-depth guide
National Chicken Wing Day
New York Senate resolutions document that the City of Buffalo proclaimed July 29, 1977 as Chicken Wing Day and continued to recognize the date; modern “National” usage is informal rather th…
Source-backedRule Based AnnualIn-depth guide
National CleanUp Day
The official National CleanUp Day organization states that the observance takes place every year on the third Saturday in September.
Source-backedFixed AnnualIn-depth guide
National Coffee Day
The National Coffee Association repeatedly marks National Coffee Day around September 29, including its 2025 research release issued in advance of the September 29 observance and subsequent…
Source-backedFixed AnnualIn-depth guide
National Coloring Book Day
Dover Publications states that it launched National Coloring Book Day, identifies August 2 as the annual date, and marks 2025 as the tenth anniversary; its 2016 release calls that year the…
Source-backedFixed AnnualIn-depth guide
National Cooking Day™
Meyer Corporation’s creator-provided 2016 release says PotsandPans.com created National Cooking Day and identifies September 25 as the observance date.
Source-backedFixed AnnualIn-depth guide
National Crayon Day
Crayola’s current craft resources identify March 31 as National Crayon Day and provide dedicated activities for the observance.
Source-backedFixed AnnualIn-depth guide
National Crime Junkie Day
Crime Junkie’s first-party fifth-anniversary page established National Crime Junkie Day for December 18, 2022 and ties the date to the podcast’s December 18, 2017 debut; a creator-linked cu…
Source-backedFixed AnnualIn-depth guide
National Cuban Sandwich Day
Tampa Bay Times reporter Christopher Spata documented creating National Cuban Sandwich Day for August 23, 2016 as a journalism experiment; later University of South Florida institutional ma…
Source-backedRule Based AnnualIn-depth guide
National Dance Day
American Dance Movement states that National Dance Day was established in 2010 and, since 2019, takes place annually on the third Saturday in September.
Source-backedFixed AnnualIn-depth guide
National Day on Writing
NCTE established the National Day on Writing in 2009 for October 20. Senate Resolution 310 supported the October 20, 2009 designation, which is recognition rather than creation of a federal…
Source-backedFixed AnnualIn-depth guide
National Devil Dog Day
National Day Calendar credits Sean Alexander Sobel as founder and records a 2018 private registrar proclamation for April 27. Drake’s product history and Marine Corps historical scholarship…
Source-backedFixed AnnualIn-depth guide
National DIY Day
Craft Box Girls states that its team launched the first National DIY Day on April 2, 2016 and established April 2 as the annual date.
Source-backedFixed AnnualIn-depth guide
National Dog Photography Day
Creator Kerry Jordan explains that she created the observance, selected July 26 and launched it in 2018; current 2026 coverage continues to use July 26.
Source-backedFixed AnnualIn-depth guide
National Dream Destination Day
Traveler Ooh La La identifies itself as founder; National Today and EventGuide support 2024 as the first celebration, and current creator-led material preserves annual November 13 recurrenc…
Source-backedFixed AnnualIn-depth guide
National Extra Virgin Olive Oil Day
The Passionate Olive published a first-party launch on August 18, 2016 for a September 30 Extra Virgin Olive Oil Day; supporting observance references identify The Passionate Olive as found…
Source-backedRule Based AnnualIn-depth guide
National High Five Day
Official project material verifies a 2002 University of Virginia student origin and third-Thursday-in-April recurrence.
Source-backedRule Based AnnualIn-depth guide
National Hot Dog Day
The National Hot Dog and Sausage Council’s current planning guide places National Hot Dog Day on the third Wednesday in July. Current steward/date rule are verified, while original creator…
Source-backedFixed AnnualIn-depth guide
National Hugging Day™
The official National Hugging Day site identifies Kevin Zaborney as founder in 1986, states that the trademarked observance recurs every January 21, and continues the observance through Nat…
Source-backedEdition SpecificIn-depth guide
National Jeep® 4x4 Day
Jeep’s first-party site identifies National Jeep® 4x4 Day on April 4, 2026.
Source-backedFixed AnnualIn-depth guide
National Letter Writing Day
The Smithsonian National Museum of American History identifies December 7 as National Letter Writing Day, and the University of Michigan Clements Library documented the same date in 2009 wh…
Source-backedFixed AnnualIn-depth guide
National Look Alike Day
National Day Calendar preserves creator Jack Etzel’s first-person account of originating the observance in Pittsburgh in the 1980s and contacting Chase’s Calendar, while Pittsburgh Magazine…
Source-backedFixed AnnualIn-depth guide
National Make Lunch Count Day
National Day Calendar and launch-era material attribute the 2016 observance to TGI Fridays and place it on April 13.
Source-backedRule Based AnnualIn-depth guide
National Men Make Dinner Day
The creator-controlled Men Make Dinner Day site states the first-Thursday-in-November rule and is copyrighted to Sandy Sharkey. Canada’s Trade-marks Journal records Sharkey’s MEN MAKE DINNE…
Source-backedFixed AnnualIn-depth guide
National Nothing Day
Current observance references identify January 16, Harold Pullman Coffin as the 1972 proposer and 1973 as the first-observance year; long-running Chase’s Calendar coverage corroborates the…
Source-backedFixed AnnualIn-depth guide
National OLAPLEX Day
OLAPLEX first-party material describes the 2020 observance as the first-ever National OLAPLEX Day, says June 25 marks the inception of OLAPLEX, and frames it as an annual brand-community ce…
Source-backedFixed AnnualIn-depth guide
National Oysters Rockefeller Day
National Day Calendar’s proclamation record states that Antoine’s Restaurant founded National Oysters Rockefeller Day, with the first observance in 2017, and sets January 10 as the annual d…
Source-backedFixed AnnualIn-depth guide
National Potty Dance Day
Current calendar references place the observance on March 5 annually and identify Charmin as having created it in 2014.