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Observance library

Browse all researched observances

2,411 researched observances. Search for a specific name or known alternate name.

Source-backedFixed AnnualIn-depth guide

International Talk Like a Pirate Day

19 September · Founder-created international novelty observance

TIME documents International Talk Like a Pirate Day as an annual 19 September observance created by John Baur and Mark Summers in 1995.

Source-backedRule Based AnnualIn-depth guide

International Talk Like William Shatner Day

22 March; under the creator’s original convention, weekend occurrences move to the following Monday · Creator-originated parody/pop-culture observance founded by voice actor Maurice LaMarche

Maurice LaMarche’s first-party 2009 declaration created International Talk Like William Shatner Day for March 22 and specified a following-Monday rule when March 22 falls on a weekend; his…

Source-backedFixed AnnualIn-depth guide

International Tea Day

21 May · United Nations / FAO international observance

A/RES/74/241

Source-backedFixed AnnualIn-depth guide

International Tiger Day / Global Tiger Day

29 July each year · Global tiger conservation awareness

WWF identifies Global Tiger Day, also widely called International Tiger Day, on 29 July as a day focused on tiger conservation awareness

Source-backedRule Based AnnualIn-depth guide

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.

Source-backedRule Based AnnualIn-depth guide

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…

Source-backedFixed AnnualIn-depth guide

International Transgender Day of Visibility

31 March annually · International LGBTQ community observance / GLAAD reference

GLAAD identifies International Transgender Day of Visibility on 31 March and describes it as observed each year.

Source-backedRule Based AnnualIn-depth guide

International Virtual Assistants Day

Third Friday of May (15 May in 2026) · International / virtual-assistant professional recognition associated with OIVAC

The original 2006 announcement and later OIVAC materials describe International Virtual Assistants Day as the third Friday of May each year.

Source-backedFixed AnnualIn-depth guide

International Vlogging Day

10 August · International online-video creator community / Summer in the City-origin observance

Contemporary creator-industry coverage records Summer in the City founders Tom Burns and David Bullas announcing the first International Vlogging Day for 10 August 2018 and presenting it as…

Source-backedRule Based AnnualIn-depth guide

International Week of Science and Peace

Week in which 11 November falls (9–15 November on the UN calendar) · United Nations international week

A/RES/43/61

Source-backedFixed AnnualIn-depth guide

International Wellness Day

15 April · United Nations / international observance

A/RES/80/249

Source-backedFixed AnnualIn-depth guide

International Whale Shark Day

30 August annually in current conservation usage · International / whale-shark conservation awareness

Wildlife Trust of India’s 2026 observance page states that International Whale Shark Day is marked every year on 30 August and documents its own continuing participation.

Source-backedFixed AnnualIn-depth guide

International Whisk(e)y Day

27 March · International / drinks-culture observance honoring whisky writer Michael Jackson

Established drinks-calendar and historical references place International Whisk(e)y Day on March 27; the parenthetical spelling intentionally encompasses whisky and whiskey traditions.

Source-backedFixed AnnualIn-depth guide

International Widows' Day

23 June · United Nations / international observance

A/RES/65/189

Source-backedRule Based AnnualIn-depth guide

International Winter Bike to Work Day

Second Friday in February; 13 February 2026 · International Winter Bike to Work Day organizer / participant-led campaign

The official campaign site states that International Winter Bike to Work Day began in 2013 and occurs on the second Friday in February every year.

Source-backedFixed AnnualIn-depth guide

International Women of Color Day

1 March · International / Women of Color recognition with U.S. institutional usage

U.S. Navy/DVIDS material identifies March 1 as International Women of Color Day and notes recognition by the National Institute for Women of Color since 1986; University of Pennsylvania mat…

Source-backedFixed AnnualIn-depth guide

International Women's Day

8 March · United Nations-recognized international observance

United Nations observance

Source-backedFixed AnnualIn-depth guide

International Women’s Day for Peace and Disarmament

24 May · International feminist peace movement / WILPF

Women’s International League for Peace and Freedom states that pacifist feminists established 24 May as International Women’s Day for Peace and Disarmament in the early 1980s.

Source-backedFixed AnnualIn-depth guide

International Youth Day

12 August · United Nations / international observance

A/RES/54/120

Source-backedFixed AnnualIn-depth guide

International Zebra Day

31 January in cited zoo and government sources · Wildlife awareness and zebra conservation observance

Smithsonian’s National Zoo uses 31 January for International Zebra Day, and a 2026 Taiwan government news service item likewise identifies 31 January and documents zoo programming around th…

Source-backedFixed AnnualIn-depth guide

Inti Raymi

24 June; verify the current official programme · Cusco, Peru / municipal cultural celebration and modern staged Inti Raymi

EMUFEC verifies the June 24 Cusco staging; Peru’s Ministry of Culture documents the modern civic-cultural revival and first staged evocation on 24 June 1944.

Source-backedRule Based AnnualIn-depth guide

IOSF World Otter Day

Last Wednesday in May annually · International / International Otter Survival Fund campaign

IOSF states that it established World Otter Day on the last Wednesday in May; its impact-report timeline records the launch in 2016.

Source-backedFixed AnnualIn-depth guide

Iraqi National Day

3 October annually · Iraq / national civic observance

Iraq’s Ministry of Planning states that Iraqi National Day falls on 3 October every year and connects it to Iraq’s 1932 League of Nations admission and full sovereignty.

Source-backedRule Based AnnualIn-depth guide

IT Professionals Day / IT Pro Day

Third Tuesday in September; 15 September 2026 · SolarWinds-created technology-professional appreciation observance

SolarWinds states that IT Pro Day began in 2015 and is observed on the third Tuesday of every September.

Source-backedFixed AnnualIn-depth guide

Jackie Robinson Day

15 April annually; 15 April 2026 edition verified · Major League Baseball / league-wide observance

MLB states that every April 15 baseball honors Jackie Robinson’s legacy and that April 15 has been dedicated as Jackie Robinson Day each year since 2004; MLB also documented the 2026 league…

Source-backedFixed AnnualIn-depth guide

Jamaica Independence Day

6 August · Jamaica

The Organization of American States’ current country page lists Jamaica National Independence Day as 6 August.

Source-backedFixed AnnualIn-depth guide

James Leonard Tagle Gordon Day

17 January annually · Olongapo City and Subic Bay Freeport Zone, Philippines / local special nonworking holiday

Republic Act No. 11217 declares January 17 every year as James Leonard Tagle Gordon Day, a special nonworking holiday in Olongapo City and the Subic Bay Freeport Zone.

Source-backedFixed AnnualIn-depth guide

Jamhuri Day

12 December · Kenyan national observance and public holiday

Office of the President of the Republic of Kenya

Source-backedFixed AnnualIn-depth guide

Jose Abad Santos Day

7 May every year · Province of Pampanga and City of Angeles, Philippines — special nonworking holiday

Republic Act No. 8815 amending Republic Act No. 7552

Source-backedFixed AnnualIn-depth guide

Joseph Jenkins Roberts Memorial Birth Anniversary

15 March annually; observed Monday 16 March in 2026 · Liberia / national public holiday

Liberia’s 2026 presidential proclamation declares 15 March the memorial birth anniversary of first president Joseph Jenkins Roberts and states that the 2026 public-holiday observance moves…

Source-backedFixed AnnualIn-depth guide

José de Diego Commemoration Day

16 April · Puerto Rico / statutory commemorative day honoring José de Diego; not a public holiday

Puerto Rico law preserves April 16 as a commemorative day for José de Diego while distinguishing it from the consolidated Próceres public holiday.

Source-backedFixed AnnualIn-depth guide

José Martí birth anniversary

28 January annually · Cuba / national-hero commemorative context

Granma identifies January 28 as the birth anniversary of Cuba’s National Hero José Martí and documents recurring commemorations around that date.

Source-backedFixed AnnualIn-depth guide

Journée internationale de la Francophonie

20 March; events are organized around 20 March each year · Organisation internationale de la Francophonie / international observance

The OIF states that the Journée internationale de la Francophonie is celebrated every year around 20 March and documents the 20 March 2026 edition.

Source-backedFixed AnnualIn-depth guide

Juliette Gordon Low’s Birthday / Founder’s Day

31 October · Girl Scouts of the USA / organizational tradition

Girl Scouts materials identify 31 October, Juliette Gordon Low’s 1860 birthday, as Founder’s Day.

Source-backedRule Based AnnualIn-depth guide

June Public Holiday (Ireland)

First Monday in June · Irish public holiday

Workplace Relations Commission / Irish Statute Book

Source-backedFixed AnnualIn-depth guide

Jura de la Constitución

18 July annually · Uruguay / national holiday context

Uruguay government sources identify 18 July with the Jura de la Constitución, while the Ministry of Labour includes 18 July in the national holiday calendar.

Source-backedFixed AnnualIn-depth guide

K-9 Veterans Day

13 March annually · United States / working and service-dog recognition

The Transportation Security Administration states that K-9 Veterans Day is recognized each year on March 13; U.S. War Dogs provides additional campaign/history context.

Source-backedFixed AnnualIn-depth guide

Kangaroo Care Day® / International Kangaroo Care Awareness Day

15 May annually; 15 May 2026 verified · Global organizer-led skin-to-skin-care awareness

The official Kangaroo Care Day site identifies May 15 as the annual global awareness initiative, founded in 2011, and publishes dedicated 2026 materials for May 15.

Source-backedFixed AnnualIn-depth guide

Kannada Rajyotsava Day / Karnataka Rajyotsava

1 November · Karnataka, India / state civic-cultural holiday

Government of Karnataka sources identify November 1 as Kannada/Karnataka Rajyotsava and a government holiday; official tourism material distinguishes the 1956 Mysore-state reorganization fr…

Source-backedFixed AnnualIn-depth guide

Karume Day

7 April · Tanzania public holiday and remembrance

United Republic of Tanzania government sources

Source-backedFixed AnnualIn-depth guide

Kashmir Solidarity Day

5 February annually; listed for 5 February 2026 by Pakistan’s Cabinet Division · Pakistan national public-holiday and solidarity commemoration context

Pakistan’s Press Information Department describes 5 February as Kashmir Solidarity Day, observed every year, and the Cabinet Division lists Kashmir Solidarity Day on 5 February in the 2026…

Source-backedFixed AnnualIn-depth guide

Keep Kids Alive Drive 25 Day

1 May · United States / Keep Kids Alive Drive 25 road-safety campaign

Keep Kids Alive Drive 25 identifies May 1 as KKAD25 Day and describes the 2026 observance as its 20th annual nationwide proclamation effort.

Source-backedFixed AnnualIn-depth guide

Kentucky Statehood Day

1 June; statehood anniversary · Kentucky, United States / statehood anniversary observance

Kentucky Historical Society uses “Statehood Day” for June 1 anniversary programming, while Kentucky government sources identify 1 June 1792 as Kentucky’s statehood date.

Source-backedFixed AnnualIn-depth guide

Keti Koti

1 July annually · Suriname, Netherlands and Caribbean contexts / remembrance and celebration connected to the abolition of slavery

Public-institution sources connect Keti Koti on 1 July to the formal abolition of slavery on 1 July 1863, while preserving the additional ten-year state-supervision period in Suriname and d…

Source-backedEdition SpecificIn-depth guide

Khmer New Year

14–16 April in Cambodia’s official 2026 holiday calendar; refresh the target-year official holiday notice · Cambodia national holiday period

Council for Legal and Judicial Reform / Royal Government of Cambodia holiday calendar

Source-backedRule Based AnnualIn-depth guide

Kids Music Day

First Friday in October; 2 October in 2026 · Keep Music Alive / international music-education participation campaign

Keep Music Alive states that Kids Music Day is celebrated each year on the first Friday in October and lists the 11th annual event on 2 October 2026.

Source-backedFixed AnnualIn-depth guide

King Kamehameha Day

11 June · Hawaiʻi / state holiday and official King Kamehameha I commemoration

State of Hawaiʻi sources verify the 22 December 1871 proclamation, first celebration on 11 June 1872, current June 11 state-holiday status and statutory celebration commission.

Source-backedFixed AnnualIn-depth guide

Kiss a Ginger Day

12 January · International informal red-hair appreciation and anti-bullying observance created in 2009

Major-media reporting identifies Canadian Derek Forgie as founder, documents the first Kiss a Ginger Day in 2009 and confirms January 12 annual recurrence. The day originated as a positive…

Source-backedFixed AnnualIn-depth guide

Knights of Columbus founding anniversary

29 March · Knights of Columbus / organizational founding anniversary

The Knights of Columbus official history states that the Order assumed corporate status on March 29, 1882, an anniversary the Order recognizes as Founder’s Day. The current charter independ…

Source-backedFixed AnnualIn-depth guide

Kodomo no Hi (Children’s Day)

5 May annually · Japan / statutory national holiday

Japan’s National Holidays Act establishes Children’s Day on May 5; Cabinet Office historical material documents its original 1948 establishment and date-selection rationale.

Source-backedFixed AnnualIn-depth guide

Korean American Day

13 January · United States

Current congressional materials support January 13 as Korean American Day and connect it with the first Korean immigrants’ arrival in 1903 and Korean American contributions

Source-backedFixed AnnualIn-depth guide

Kosrae State Constitution Day

11 January; observed-date adjustments may be directed when necessary · Kosrae State, Federated States of Micronesia / state government holiday

Kosrae law lists Kosrae State Constitution Day on 11 January and provides a mechanism for written holiday-date adjustments.

Source-backedFixed AnnualIn-depth guide

Kwanzaa

26 December through 1 January · African American and Pan-African cultural holiday

The Smithsonian National Museum of African American History and Culture describes Kwanzaa as a week-long African American and Pan-African cultural celebration observed from December 26 to J…

Source-backedRule Based AnnualIn-depth guide

La Tomatina

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

Ajuntament de Buñol / municipal tourism authority

Source-backedRule Based AnnualIn-depth guide

Labor Day

First Monday in September · United States federal holiday

U.S. Department of Labor history and 5 U.S.C. 6103 verify the 1882 first celebration, the 1894 federal enactment and the current first-Monday-in-September legal holiday; founder attribution…

Source-backedFixed AnnualIn-depth guide

Labor Day (Philippines)

1 May · Philippine regular holiday

Supreme Court E-Library / official presidential proclamation

Source-backedRule Based AnnualIn-depth guide

Labour Day

First Monday in September (7 September in 2026) · Canada — Labour Day public holiday; jurisdiction-specific employment-law entitlements

Canada government holiday schedules and federal labour standards; this Canadian date must not be generalized internationally.

Source-backedRule Based AnnualIn-depth guide

Labour Day

Fourth Monday in October · New Zealand public holiday

Employment New Zealand / Holidays Act public-holiday system

Source-backedRule Based AnnualIn-depth guide

Lake Superior Day

Third Sunday in July (19 July in 2026) · Lake Superior basin / binational U.S.–Canada environmental appreciation observance

The U.S. National Park Service and EPA Lake Superior management materials describe Lake Superior Day as an annual event on the third Sunday in July.

Source-backedVariable CustomIn-depth guide

Lantern Festival (元宵节 / Yuanxiao Festival)

3 March 2026; traditionally the 15th day of the first lunar month · China / traditional festival, with Beijing government 2026 date evidence

Beijing municipal cultural authorities: fifteenth day of first lunar month; March 3 only for 2026

Source-backedFixed AnnualIn-depth guide

Lapu-Lapu Day / Adlaw ni Lapu-Lapu

27 April every year · Philippines special working public holiday nationwide; special nonworking holiday in Lapu-Lapu City

Republic Act No. 11040

Source-backedFixed AnnualIn-depth guide

Lash Stylists’ Day

24 September · International beauty industry / Noble Lashes creator-defined observance

Noble Lashes’ current site lists its September 24 Lash Stylist Day initiative; current corroboration attributes creation to Noble Lashes in 2018 while the exact first recurring edition rema…

Source-backedEdition SpecificIn-depth guide

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

Source-backedFixed AnnualIn-depth guide

Law Day, U.S.A.

1 May · United States patriotic and national observance

United States Code, title 36 §113

Source-backedFixed AnnualIn-depth guide

League of Women Voters founding anniversary

14 February · United States / League of Women Voters organizational founding anniversary

League of Women Voters first-party history establishes Carrie Chapman Catt’s 1919 proposal and formal organization of the national League in Chicago on 14 February 1920. The organization co…