Culture Heritage observances

African World Heritage Day

5 May · UNESCO world day

Ak Kalpak Day

5 March each year · Kyrgyzstan

Kyrgyz government sources say Ak Kalpak Day began as an unofficial observance in 2011 through filmmaker Rysbek Zhabirov’s initiative, received official status through Jogorku Kenesh Resolut…

Arabic Language Day

18 December · United Nations / international observance

United Nations language observance

Baba Marta / Martenitsa tradition

1 March · Bulgaria / cultural tradition

Bulgarian Ministry of Tourism cultural material describes the Baba Marta/Martenitsa spring custom and the March 1 tradition of wearing or exchanging martenitsi.

BOTOX® Cosmetic (onabotulinumtoxinA) Day

Third Wednesday of November · United States / Allergan Aesthetics brand observance

AbbVie states that BOTOX® Cosmetic Day is held annually on the third Wednesday of November and identifies it as an Allergan Aesthetics/AbbVie brand observance.

Calennig

1 January traditionally · Welsh New Year custom

Museum Wales and Wales.com identify Calennig as a traditional Welsh New Year custom on 1 January, including documented door-to-door rhymes, gifts and decorated-apple traditions.

Carnaval del Ecuador

Movable pre-Lenten Carnival period; government holiday dates vary by year · Ecuador national cultural and holiday context

Ecuador’s official tourism portal documents Carnival traditions across the country, while the Ministry of Tourism holiday calendar records the Carnival holiday period.

Carnavales de Venezuela

Movable pre-Lenten Carnival period; 2026 tourism programming ran in mid-February · Venezuela national tourism and cultural celebration context

Venezuela’s Ministry of Tourism published current 2026 Carnival programming and national tourism coverage for the Carnavales period.

Carnival Day / Carnaval

17 February 2026 · Angola

Angolan government cultural communications frame Carnival as a vehicle for cultural preservation and national identity

Chinese Language Day

20 April · United Nations / international observance

United Nations language observance

Chișinău City Day / Hramul Chișinăului

14 October · Chișinău municipal civic-cultural celebration on October 14 with a related Orthodox patronal-feast tradition; civic programming and religious worship remain distinct.

Official Chișinău municipal material records the first city-holiday celebration in 1995, an initial second-Sunday-in-October rule and a 2000 decision fixing October 14 to coincide with the…

Comic Sans Day

First Friday in July · Netherlands-origin radio/typography observance with wider online participation

Dutch media coverage identifies 3FM presenters Coen Swijnenberg and Sander Lantinga with the Comic Sans Day campaign and places it on the first Friday in July; later Dutch print-industry co…

Cooper’s Hill Cheese-Rolling and Wake

Spring Bank Holiday Monday · Gloucestershire, England / historic Cooper’s Hill event; current local-government sources report no official organiser

The event site and Tewkesbury Borough Council corroborate the annual Spring Bank Holiday Monday event; the council’s 2026 safety statement says it has no official organiser and raises signi…

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…

Curaçao Day

10 October · Curaçao cultural and country commemoration

Curaçao’s official tourism organisation promotes 10 October celebrations explicitly as Curaçao Day, while a U.S. State Department message independently recognizes the observance on that dat…

Cyber Monday

Monday after U.S. Thanksgiving · United States-origin / ecommerce shopping event

Shopify identifies Cyber Monday as the Monday after Thanksgiving and traces the term to Shop.org in 2005; Georgetown documents Ellen Davis and the Shop.org team naming the post-Thanksgiving…

Dantedì — Italy’s national day dedicated to Dante Alighieri

25 March annually · Italy / national cultural day

Italy’s Ministry of Culture states that 25 March is Dantedì, the national day dedicated to Dante Alighieri, established by the Council of Ministers in 2020.

Day of Indigenous Resistance

12 October · Venezuela / national commemoration

Venezuela’s Ministry of Culture states that 12 October has been commemorated as Día de la Resistencia Indígena since 2002 and continues to publish current anniversary material on that date.…

Day of the Indigenous Peoples (Inheemsendag)

9 August · Suriname / national Indigenous Peoples commemoration

Suriname government messages state that Indigenous Peoples Day is celebrated on August 9 each year.

Day of Workers of Culture and Art and Poetry of Magtymguly Fragi

27 June · Turkmenistan / national professional and cultural observance

Official Turkmen cultural and government sources identify June 27 as the annual Day of Workers of Culture and Art and Poetry of Magtymguly Fragi, trace the culture-and-art-workers phase to…

Día de la Cruz

3 May annually · El Salvador cultural-religious tradition

El Salvador Ministry of Culture repeatedly documents Día de la Cruz on May 3 as a living syncretic Salvadoran cultural-religious tradition with Christian, Indigenous and agricultural elemen…

Día de la Diversidad Cultural

12 October · Uruguay / cultural-diversity commemoration

Uruguay’s Legislative Library identifies October 12 as Día de la Diversidad Cultural and explains the 2014 move away from the older “Día de la Raza” wording.

Día de la Puertorriqueñidad

19 November · Puerto Rico / statutory November 19 public holiday with cultural and historical context

Puerto Rico Law No. 91 of 1938, as amended, declares November 19 a holiday known as Día de la Puertorriqueñidad; current government calendar material also retains older discovery terminolog…

Día de la Resistencia Indígena

12 October · Venezuela / national commemoration

Venezuela Ministry of Culture verifies October 12 recurrence and identifies Presidential Decree No. 2028 of October 11, 2002 as the renaming/redefinition from Día de la Raza to Día de la Re…

Día del Respeto a la Diversidad Cultural

12 October nominal date; transfer rules can alter the observed national-holiday day · Argentina / national-holiday framework

Argentina’s current consolidated holiday decree lists 12 October as Día del Respeto a la Diversidad Cultural and sets transfer rules for some national holidays.

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…

Festive cycle around the devotion and worship towards Saint John the Baptist

23–24 June; 24 June is the central Saint John date in the cited cycle · Venezuela / UNESCO intangible cultural heritage

UNESCO inscribed Venezuela’s festive cycle around devotion and worship towards Saint John the Baptist in 2021; its description identifies practices on 23 June and 24 June.

Fiestas Patronales de Santa Ana — Nindirí

24–28 July in the cited local tradition, with 26 July as a principal day · Nindirí, Masaya, Nicaragua local patronal festival

Nicaragua’s official National Tourism Map describes Nindirí’s traditional Santa Ana festivities as an annual local celebration across late July.

Fiestas Patronales de Santiago — Somoto

25 July principal day; surrounding patronal program varies · Somoto, Madriz, Nicaragua local patronal festival

Nicaragua’s official National Tourism Map describes Somoto’s patronal celebrations honoring Santiago around 25 July and notes an extended festival period.

Filipino American History Month

October · United States

FANHS identifies itself as the originator of the October observance and documents the October 18, 1587 historical anchor; 2009 congressional records separately verify national legislative r…

Food for Life Roast Dinner Day

Organizer-scheduled campaign date; documented 29 September 2010 and active within Food for Life’s Cook and Share work in 2023 · United Kingdom / Food for Life school and community food campaign

UK Parliament records the Food for Life Partnership National Roast Dinner Day held across schools on 29 September 2010; Food for Life’s own 2023 campaign material shows Roast Dinner Day con…

French Language Day

20 March · United Nations / international observance

United Nations language observance

Guam History and Chamorro Heritage Day

first Monday in March; 2 March 2026 · Guam / territorial government holiday

Guam law designates the first Monday in March as Guam History and Chamorro Heritage Day, and the federal District Court of Guam’s 2026 holiday calendar lists 2 March 2026.

Hari Perisytiharan Melaka Sebagai Bandaraya Bersejarah

15 April · Melaka, Malaysia / state commemorative observance

Melaka state history records the Historical City declaration on 15 April 1989, while a Malaysian government calendar carries the proclamation-day observance on 15 April.

Heritage Day

24 September · South Africa / national public holiday

Public Holidays Act 36 of 1994 lists Heritage Day on 24 September; current government material confirms continuing public-holiday status and national observance.

Heritage Day

First Monday in August; 3 August 2026; 2 August 2027 · Alberta, Canada / provincial civic observance and optional general holiday; not one of Alberta’s statutory general holidays

Government of Alberta sources identify Alberta Heritage Day/Heritage Day as the first Monday in August. Employment-standards guidance lists it among optional general holidays that an employ…

Hina Matsuri / Doll’s Festival / Girls’ Day

3 March annually · Japan / traditional cultural observance

The Japan National Tourism Organization describes the third day of the third month as the annual Hina Matsuri or Doll’s Festival/Girls’ Day celebration in Japan.

HumanLight

23 December annually · Secular humanist holiday/community observance

HumanLight’s official organization identifies 23 December as the holiday and maintains current information about secular humanist celebration.

Indigenous Faith Day

1 December · Arunachal Pradesh, India / state government holiday calendar

Arunachal Pradesh government holiday calendars list Indigenous Faith Day on 1 December, including the 2024 notification and 2026 state portal calendar.

Indigenous Literacy Day

First Wednesday of September; 2 September 2026 · Australia / First Nations stories, cultures and languages

The Indigenous Literacy Foundation states that it created Indigenous Literacy Day in 2007, has hosted it annually since then and holds the national celebration on the first Wednesday in Sep…

Indigenous Peoples' Day

Second Monday in October in cited state/local practice; verify target-year federal proclamation separately · United States / decentralized federal-presidential, state, local and Tribal civic context; legally distinct from the federal statutory Columbus Day holiday

Primary government records document Indigenous Peoples’ Day in municipal/state law and U.S. presidential proclamations, while current OPM guidance continues to identify the federal statutor…

International Artist Day

25 October · International / founder-led artist recognition initiative

The International Artist Day site identifies October 25 as the observance date and says founder Chris MacClure launched the initiative in 2004.

International Book Giving Day

14 February annually · International Book Giving Day / volunteer literacy initiative

The Children’s Book Council describes International Book Giving Day as a volunteer initiative that takes place each year on 14 February.

International Day against Illicit Trafficking in Cultural Property

14 November · UNESCO international day

Proclaimed by UNESCO General Conference

International Day for Underwater Cultural Heritage

21 August · UNESCO international day

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

International Day of the Intangible Cultural Heritage

17 October · UNESCO international day

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

International Day of the World's Indigenous Peoples

9 August · United Nations international observance

A/RES/49/214

International Day of the World's Indigenous Women and Girls

5 September · United Nations / international observance

A/RES/80/10

International Grenache Day

Third Friday of September; 18 September in 2026 · International Grenache/wine-community observance

Grenache Association first-party history says International Grenache Day was launched in 2010 after the first International Grenache Symposium and is now held annually on the third Friday o…

International Mother Language Day

21 February · UNESCO / international observance

A/RES/56/262

International Read to Me! Day

19 March · International Read to Me! Day / literacy campaign

The campaign’s official site identifies International Read to Me! Day as 19 March and describes the date as a focal day within a broader ongoing reading effort.

International Sagarmatha (Mount Everest) Day

29 May annually in Nepal’s official tourism observance · Nepal mountaineering and tourism commemoration of the first confirmed ascent of Everest

Government of Nepal / Nepal Tourism Board evidence supports annual May 29 International Sagarmatha Day, a first 2008 programme and continuing Ministry/NTB/NMA involvement, commemorating Ten…

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.

Language Movement Day / Shaheed Dibas (Martyrs’ Day)

21 February · Bangladesh national remembrance and cultural observance

Bangladesh Tourism Board / Government of Bangladesh

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

Long Tan Day (historical name; now Vietnam Veterans’ Day)

18 August · Australian remembrance observance; “Long Tan Day” is the historical name now officially observed as Vietnam Veterans’ Day

Australian War Memorial and Department of Veterans’ Affairs: historical Long Tan Day name; now Vietnam Veterans’ Day August 18

Lui-Ngai-Ni

15 February annually · Manipur Naga seed-sowing cultural festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is a collective festival of the Nagas observed on 15 February every year and describes it as a seed-sowing…

Lui-Ngai-Ni

15 February · Manipur, India / Naga seed-sowing festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is observed on 15 February every year and describes it as a collective Naga seed-sowing festival.

Mid-Autumn Festival

25–27 September 2026 public-holiday period · 15th of eighth Chinese lunar month; mainland China 2026 festival Sept 25 and statutory break Sept 25–27; other regions differ

The General Office of China’s State Council sets the 2026 Mid-Autumn Festival public-holiday period at 25–27 September.

Museum Selfie Day

Third Wednesday of January (21 January in 2026) · International / museum-participation campaign created by Mar Dixon

Museum and government cultural sources identify Museum Selfie Day as a Mar Dixon-created annual campaign on the third Wednesday of January.

Mărțișor

1 March · Bulgaria, North Macedonia, Republic of Moldova and Romania / UNESCO-listed first-of-March cultural practices

UNESCO’s Representative List records the multinational element “Cultural practices associated to the 1st of March” for Bulgaria, North Macedonia, the Republic of Moldova and Romania, inscri…

National American Sign Language Day

15 April 2026 · United States / state-government recognition and community observance

California’s disability-access commission and the American School for the Deaf corroborate recurring April 15 National ASL Day and the school’s April 15, 1817 opening; this is not an automa…

National Archives Day (Philippines)

21 October · Philippines / national archives and records observance

The National Archives of the Philippines states that Proclamation No. 660, s. 1995 declared October 21 of every year National Archives Day.

National Black Poetry Day

17 October · United States / cultural-literary commemoration honoring Black poetry and Jupiter Hammon

New York legislative and SUNY Plattsburgh records trace Black Poetry Day to Stanley Ransom in 1970, observed on October 17 for Jupiter Hammon’s birthday; later state resolutions recognize t…

National Culture and Senior Citizens Day

11 July as the named day; government may designate an in-lieu working-day holiday in a given year · Kiribati national public-holiday and cultural context

Kiribati’s Public Service Office lists the observance in the national public-holiday calendar, while the Ministry of Internal Affairs cultural division explains that it merged earlier cultu…

National Dance/Movement Therapy Advocacy Day

13 June · United States-origin dance/movement therapy advocacy observance

A 2026 NHS mental-health service article identifies June 13 as National Dance/Movement Therapy Advocacy Day; National Day Archives records the June 13 date and Erica Hornthal as the 2019 cr…

National Dombra Day

First Sunday of July annually; 5 July in 2026 · Kazakhstan / national cultural observance

Kazakhstan government material states that National Dombra Day was established in 2018 and is celebrated on the first Sunday of July.

National Family Health History Day

U.S. Thanksgiving Day annually · United States / U.S. Surgeon General family-health-history public-health observance on Thanksgiving

HHS/NHGRI records show that U.S. Surgeon General Richard H. Carmona declared Thanksgiving 2004 the first annual National Family History Day as part of the Family History Initiative. Later N…

National Fitness Day

First Saturday in May · United States / National Fitness Day organization

The National Fitness Day organization states that the observance started in 2017 and is celebrated on the first Saturday of May in the United States.

National Hair Day

1 October · United States / NuMe-created hair appreciation observance

NuMe identifies founder/CEO Sabrina Maren as the creator of National Hair Day, describes an October 1 launch in 2017, and states that the observance returns every October 1; first-party mat…