Interests Lifestyle observances

African World Heritage Day

5 May · UNESCO world day

Anthropology Day

Third Thursday of February · anthropology education and public-engagement observance

The American Anthropological Association (AAA) currently presents Anthropology Day on the third Thursday in February. An AAA-issued 2015 press release documents the inaugural National Anthr…

Arabic Language Day

18 December · United Nations / international observance

United Nations language observance

Bloomsday

16 June; the 2026 Bloomsday Festival ran 11–16 June · James Joyce literary commemoration on 16 June; Dublin Bloomsday Festival programming is edition-specific

The James Joyce Centre identifies 16 June as Bloomsday because Ulysses is set on 16 June 1904, and its educational material records the first Bloomsday celebration in 1954. The Centre organ…

Burns Night

25 January annually · Scotland and international Burns-supper tradition

VisitScotland and the National Trust for Scotland identify January 25 as Robert Burns’s birthday, document the first Burns Supper at Burns Cottage in 1801, and explain the transition to bir…

Chinese Language Day

20 April · United Nations / international observance

United Nations language observance

Culture Day

3 November · Japanese national holiday

Japan’s current government holiday guidance identifies Culture Day on 3 November and states its purpose as loving freedom and peace and promoting culture. The government history says the ho…

English Language Day

23 April · United Nations / international observance

United Nations language observance

European Heritage Days

September/October programme; national and regional dates vary · Joint Council of Europe–European Commission cultural-heritage programme

Council of Europe

Extraterrestrial Culture Day

Second Tuesday of February under the cited New Mexico House memorial · New Mexico symbolic legislative memorial / extraterrestrial-culture commemoration

New Mexico legislative records identify House Memorial 44, “Extraterrestrial Culture Day,” as passed in 2003; preserved memorial text designates the second Tuesday in February. The evidence…

Floral Design Day

28 February · United States / floral-design arts observance originating in Massachusetts

Smithsonian Libraries documents Floral Design Day on February 28, created around floral educator Carl Rittner’s birthday and enacted by a 1995 Massachusetts gubernatorial proclamation.

French Language Day

20 March · United Nations / international observance

United Nations language observance

Global Movie Day

Second Saturday of February annually · Global / Academy of Motion Picture Arts and Sciences initiative

The Academy of Motion Picture Arts and Sciences states that it established Global Movie Day, that the inaugural observance was in 2020, and that it is held on the second Saturday of Februar…

Hangul Proclamation Day

9 October · Republic of Korea national holiday

Republic of Korea Ministry of Personnel Management; Act on National Holidays

I Love Yarn Day

Second Saturday in October; 10 October in 2026 · Craft Yarn Council fibre-arts celebration

The Craft Yarn Council current page gives 10 October 2026 and says the celebration is held annually on the second Saturday in October.

International Animation Day

28 October · Organizer-backed worldwide cultural observance

ASIFA — International Animated Film Association

International Asteroid Day

30 June · United Nations / international observance

A/RES/71/90

International Childfree Day

1 August · international lifestyle and recognition observance for people who are childfree by choice

The official International Childfree Day history records Non-Parents’ Day on 1 August 1973 as the precursor, Laura Carroll’s 2013 revival/rebranding as International Childfree Day, and a 20…

International Colour Day

21 March · international colour awareness and interdisciplinary observance

International Colour Association (AIC)

International Country Music Day

17 September · International / informal country-music appreciation observance created by the Country Music Association of Spain

The original International Country Music Day organizer record states that the Country Music Association of Spain created the observance in 2003 and holds it every September 17 to commemorat…

International Cribbage Day

10 February in American Cribbage Congress history; confirm current organizer programming yearly · American Cribbage Congress and international cribbage-community observance

American Cribbage Congress board minutes describe the second annual International Cribbage Day held on February 10 and note collaboration with cribbage organizations outside the United Stat…

International Dance Day

29 April · international dance and performing-arts observance

International Theatre Institute states that its Dance Committee founded International Dance Day in 1982 and that it is celebrated every 29 April, Jean-Georges Noverre’s birthday anniversary.

International Darwin Day

12 February · Organizer-led international science and education observance

The Darwin Day organization identifies 12 February as International Darwin Day and maintains current event listings; no UN designation is asserted here.

International Day for Monuments and Sites

18 April · ICOMOS international heritage observance; concept adopted by UNESCO in 1983

International Council on Monuments and Sites (ICOMOS)

International Day for Underwater Cultural Heritage

21 August · UNESCO international day

Proclaimed at UNESCO’s 43rd General Conference (2025)

International Day of Human Space Flight

12 April · United Nations / international observance

A/RES/65/271

International Day of Islamic Art

18 November · UNESCO international day

Proclaimed at UNESCO’s 40th General Conference (2019)

International Day of Light

16 May · UNESCO international observance

UNESCO 39 C/Resolution 16

International Day of Mathematics

14 March · UNESCO international observance

International Day of the Celebration of the Solstice

21 June · United Nations / international observance

A/RES/73/300

International Day of the Intangible Cultural Heritage

17 October · UNESCO international day

Proclaimed at UNESCO’s 42nd General Conference (2023)

International Day of University Sport

20 September · UNESCO international day

International Day of Yoga

21 June · United Nations international observance

A/RES/69/131

International Design Day

27 April · international design-profession observance

International Council of Design identifies International Design Day as the current name, held 27 April to commemorate the Council’s 1963 founding, and says the event was celebrated as World…

International Edible Book Festival / Edible Book Day

1 April · International participatory book-art/food event

The Books2Eat creator site identifies Judith A. Hoffberg and Béatrice Coron as the creators and explains the April 1 date for the International Edible Book Festival.

International Francophonie Day

20 March · International Francophonie / French-language and cultural observance

UNESCO and the Organisation internationale de la Francophonie identify March 20 as International Francophonie Day. The date commemorates the creation of the Agency for Cultural and Technica…

International Geocaching Day

Third Saturday of August · Global geocaching community observance coordinated by Geocaching HQ; outdoor recreation with land-permission, property, privacy, environmental and safety boundaries

Geocaching HQ first-party history identifies August 20, 2011 as the first International Geocaching Day and states that it is now celebrated every third Saturday in August. Current official…

International Jazz Day

30 April · UNESCO / international observance

UNESCO 36 C/Resolution 39

International Louie Louie Day

11 April in the organizer/community tradition; current activity should be rechecked yearly · Grassroots music/fan observance centered on the song “Louie Louie”

The Louie Louie advocacy/fan community documents International Louie Louie Day and its April 11 tradition, developed through the Louie Louie Advocacy and Music Appreciation Society ecosyste…

International Marconi Day

Saturday closest to 25 April · International amateur-radio operating event administered by the Cornish Radio Amateur Club; commemorates Guglielmo Marconi while preserving wider wireless-telegraphy history and licensing/safety boundaries

Cornish Radio Amateur Club first-party material verifies its current administration of International Marconi Day, a 24-hour annual amateur-radio event usually held on the Saturday closest t…

International Moon Day

20 July · United Nations / international observance

A/RES/76/76

International Music Day

1 October · Organizer-backed international cultural observance

International Music Council (IMC)

International Podcast Day™

30 September annually · International Podcast Day / global organizer-led observance

The official International Podcast Day site identifies 30 September as International Podcast Day and explains that the event was rebranded from National Podcast Day in 2015.

International Sculpture Day

Last Saturday of April · Worldwide sculpture and visual-arts observance / International Sculpture Center

International Sculpture Center states that it inaugurated International Sculpture Day in 2015 and that the observance occurs on the last Saturday of April every year.

International Sudoku Day

9 September annually · International puzzle-community observance

Logic Masters India records the World Puzzle Federation’s announcement of 9/9 as International Sudoku Day; an institute under Turkmenistan’s Ministry of Foreign Affairs independently record…

International Top Spinning Day

Second Wednesday in October; 14 October in 2026 · International toy/craft museum observance

The Spinning Top & Yo-Yo Museum identifies International Top Spinning Day on the second Wednesday in October and lists the 2026 date.

International Town Criers Day

Second Monday of July; continuation reviewed annually by the guild board · Ontario Guild of Town Criers / town-crier community

The Ontario Guild of Town Criers says International Town Criers Day began in 1997, was founded by Scott Fraser and is designated for the second Monday of July, with continuation reviewed an…

La Tomatina

last Wednesday of August; 26 August in 2026 · Buñol municipal festival, Spain

Ajuntament de Buñol / municipal tourism authority

Launceston Cup regional holiday

25 February 2026; last Wednesday in February · Parts of northern Tasmania, Australia

WorkSafe Tasmania and Southern Midlands Council regional public-service holiday schedules; boundaries and partial-day start vary

Lei Day

1 May · Hawaiʻi cultural observance recognized by the state

State of Hawaiʻi Department of Land and Natural Resources / state law history

Library Shelfie Day

Fourth Wednesday of January; 28 January in 2026 · Libraries and readers / social book-and-library tradition

The New York Public Library says Library Shelfie Day occurs every year on the fourth Wednesday of January and that the tradition started in 2014.

National American Teddy Bear Day

14 November · United States / informal teddy-bear appreciation observance

Vermont Teddy Bear’s first-party site marks November 14 as National American Teddy Bear Day. A contemporaneous November 2002 University of Delaware Review report quoting Vermont Teddy Bear…

National Barcode Day

26 June annually · AIDC / supply-chain industry observance founded by Barcoding, Inc., Datalogic and ScanSource

Barcoding, Inc. says it created National Barcode Day with Datalogic and ScanSource for June 26, commemorating the first retail UPC scan on June 26, 1974.

National Bath Bomb Day

25 May · United States / Desert Bath Company-created bath-product observance

National Day Archives records May 25 of each calendar year and identifies Desert Bath Company as the 2021 creator; current calendar coverage preserves the same date.

National Bowling Day

Latest dated organizer page: Saturday 9 August 2025; 2026 industry materials confirm campaign continuity but not a 2026 date · United States / Go Bowling and bowling-industry National Bowling Day campaign; target-year date remains edition-specific

Go Bowling’s official campaign page documents Saturday, 9 August for the 2025 edition and says the sport has been featured on FOX & Friends for National Bowling Day each year since 2018. US…

National Cartonnage Day

Third Saturday in September · United States / cartonnage craft community

National Day Archives records Colorway Arts as the creator and states the observance occurs on the third Saturday of September; Colorway Arts documents the original September 18, 2021 event.

National Checklist Day

30 October · United States / informal checklist and aviation-safety-themed observance

FAA Safety Briefing states that National Checklist Day rolls around every October 30 and explains the date through the October 30, 1935 Model 299 crash that prompted formal aviation checkli…

National Clean Out Your Virtual Desktop Day

Third Monday in October · International/informal digital-organization observance created by the Personal Computer Museum in Brantford, Ontario

Timeanddate and Checkiday independently attribute the observance to the Personal Computer Museum in Brantford in 2010; Checkiday preserves a Wayback source to the museum’s original pcmuseum…

National Craft for Your Local Shelters Day

21 July · United States / animal-shelter craft-support campaign

Founder Erika Lindquist’s Sew Doggy Style archive says the official date is July 21 and that the observance started in 2012; NAPPS independently attributes the day to Lindquist.

National Crayon Day

31 March · Creative arts / Crayola first-party recognition

Crayola’s current craft resources identify March 31 as National Crayon Day and provide dedicated activities for the observance.

National Croc Day

23 October · Crocs brand and fan community / Croctober fan-originated footwear observance

Crocs corporate history traces Croc Day to fan activity on October 23, 2017 and repeatedly identifies October 23 as the annual Croc Day date, including in 2025. The inherited October 25 val…

National Cut the Cord Day

9 February · United States / Sling TV-created streaming-industry observance

Sling TV’s 2020 fifth-anniversary release announced February 9, 2020 as the first National Cut the Cord Day and states that National Day Calendar declared the observance to recur annually o…

National DNA Day

25 April each year · NHGRI-led genetics and genomics education / U.S.-based initiative with broad participation

NHGRI says National DNA Day is celebrated annually on April 25 and commemorates the Human Genome Project completion and the discovery of the DNA double helix.

National Expense Report Day

15 October · United States / Ramp-created workplace-process campaign

Ramp’s October 15, 2025 first-party launch creates National Expense Report Day; National Day Archives independently identifies Ramp as creator in 2025 and records October 15 annual recurren…

National FreeBSD Day

19 June · FreeBSD community and open-source software observance

The FreeBSD Foundation states that FreeBSD Day is celebrated on June 19, marking the June 19, 1993 agreement on the FreeBSD name; National Day Calendar states that the Foundation founded th…

National Greeting Card Day

1 April · United States / Lovepop-created greeting-card observance

National Day Archives records Lovepop Cards as creator in March 2021 for an annual April 1 observance; Lovepop first-party material ties April 1 to its April 1, 2014 launch anniversary and…

National Jamaican Patty Day

First Saturday in August; 1 August in 2026 · Golden Krust-created food observance / Jamaican patty appreciation

Golden Krust says it launched National Jamaican Patty Day in 2015 and celebrates it annually on the first Saturday in August.

National Leathercraft Day

15 August · United States / Tandy Leather-created craft observance

Tandy Leather states that it started National Leathercraft Day in 2018 and celebrates it on August 15; National Day Calendar records the Registrar’s annual August 15 proclamation.

National Mascot Day

17 June in established sports-community usage · Sports mascot recognition / Mascot Hall of Fame community

Major League Baseball documents National Mascot Day on June 17 in connection with Mascot Hall of Fame recognition; original creator and first edition remain unresolved.

National Pawpaw Day

Third Thursday of September; 17 September in 2026 · Kentucky State University agriculture and native-fruit awareness observance

Kentucky State University documents the inaugural National Pawpaw Day on 19 September 2019 and establishes the third Thursday of each September for pawpaw awareness.

National Pool Opening Day

Last Saturday in April; 25 April in 2026 · Leslie’s-organized seasonal pool-care observance

Leslie’s first-party material identifies National Pool Opening Day as the last Saturday in April and documents current company participation; founder and first-edition claims remain unresol…

National Recommit to Your Fitness Day

5 April · United States / F45 Training-created fitness campaign

F45 Training launched National Recommit to Your Fitness Day in 2025 as an annual April 5 initiative; its first-party announcement says 4/5 is a nod to the F45 name.