Source-backedFixed AnnualIn-depth guide
International Day of the World's Indigenous Peoples
A/RES/49/214
2028 calendar
August 2028 observances
Observances for August, with source and date details available on each guide.
175listed dates
31days with observances
6+in-depth guides surfaced
Explore the mix
All topics →Topics across August
Curated global anchors
See the collection →Major global guides in August
A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.
Source-backedFixed AnnualIn-depth guide
International Youth Day
A/RES/54/120
Source-backedFixed AnnualIn-depth guide
World Humanitarian Day
A/RES/63/139
Source-backedFixed AnnualIn-depth guide
International Day for the Remembrance of the Slave Trade and Its Abolition
UNESCO 29 C/Resolution 40
Source-backedFixed AnnualIn-depth guide
International Day against Nuclear Tests
A/RES/64/35
Reviewed depth
Curated collections →More in-depth guides in August
Source-backedFixed AnnualIn-depth guide
Fête d’accession à la souveraineté nationale et internationale / Independence anniversary
The Government of Benin identifies 1 August as the country’s accession-to-sovereignty celebration and documented the 63rd independence anniversary on 1 August 2023; the government also publ…
Source-backedFixed AnnualIn-depth guide
Emancipation Day
Guyana’s Ministry of Home Affairs identifies 1 August as Emancipation Day and has formally declared the date a public holiday under the Public Holidays Act in annual notices.
Source-backedFixed AnnualIn-depth guide
International Childfree Day
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…
Source-backedFixed AnnualIn-depth guide
National Day (Fête Nationale)
Benin government sources mark 1 August as the Fête Nationale and describe the 2026 celebration as the 66th anniversary of accession to national sovereignty.
Source-backedFixed AnnualIn-depth guide
National Minority Donor Awareness Day
HRSA’s August 2025 health observance calendar lists National Minority Donor Awareness Day on August 1; peer-reviewed MOTTEP history documents its August 1, 1996 inauguration.
Source-backedRule Based AnnualIn-depth guide
National Night Out
NATW identifies Matt Peskin as founder, documents its 1981 association formation and August 1984 campaign launch, and maintains the first-Tuesday-in-August rule with the Texas/select-area O…
Calendar density
Busiest dates in August 2028
TueAugust 1Date page →
Source-backedFixed AnnualIn-depth guide
Fête d’accession à la souveraineté nationale et internationale / Independence anniversary
The Government of Benin identifies 1 August as the country’s accession-to-sovereignty celebration and documented the 63rd independence anniversary on 1 August 2023; the government also publ…
Source-backedFixed AnnualIn-depth guide
Emancipation Day
Guyana’s Ministry of Home Affairs identifies 1 August as Emancipation Day and has formally declared the date a public holiday under the Public Holidays Act in annual notices.
Source-backedFixed AnnualIn-depth guide
International Childfree Day
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…
Source-backedFixed AnnualIn-depth guide
National Day (Fête Nationale)
Benin government sources mark 1 August as the Fête Nationale and describe the 2026 celebration as the 66th anniversary of accession to national sovereignty.
Source-backedFixed AnnualIn-depth guide
National Minority Donor Awareness Day
HRSA’s August 2025 health observance calendar lists National Minority Donor Awareness Day on August 1; peer-reviewed MOTTEP history documents its August 1, 1996 inauguration.
Source-backedRule Based AnnualIn-depth guide
National Night Out
NATW identifies Matt Peskin as founder, documents its 1981 association formation and August 1984 campaign launch, and maintains the first-Tuesday-in-August rule with the Texas/select-area O…
Source-backedFixed AnnualIn-depth guide
Respect for Parents Day
Contemporaneous Los Angeles Times reporting in 1995 documents Marilyn Dalrymple’s campaign to create/proclaim August 1 as Respect for Parents Day, and a 2000 Christian Science Monitor featu…
Source-backedFixed AnnualIn-depth guide
Swiss National Day
Swiss federal sources place the modern August 1 national-day tradition in the late nineteenth century, with an 1891 jubilee and later Federal Council action, and record nationwide public-ho…
Source-backedFixed AnnualIn-depth guide
Yorkshire Day
Yorkshire Ridings Society material states that the Society first organised Yorkshire Day in 1975 and chose 1 August for the Minden/white-rose connection; government and current civic materi…
WedAugust 2Date page →
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
Ilinden – Republic Day
Current North Macedonian Ministry of Defence material identifies 2 August – Ilinden as Republic Day and links the national commemoration to the Ilinden Uprising/Kruševo Republic tradition a…
Source-backedFixed AnnualIn-depth guide
Día de la Virgen de los Ángeles
Costa Rica's Ministry of Labour states that August 2 commemorates the Virgen de los Ángeles under article 148 of the Labour Code and that the holiday is not moved to another day.
ThuAugust 3Date page →
Source-backedRule Based AnnualIn-depth guide
National IPA Day
National Day Calendar documents National IPA Day on the first Thursday in August and attributes the modern observance to Ashley Routson in 2011.
Source-backedFixed AnnualIn-depth guide
National Watermelon Day
National Watermelon Promotion Board materials identify August 3 as National Watermelon Day and use it in consumer promotion planning.
FriAugust 4Date page →
Source-backedRule Based AnnualIn-depth guide
Braham Pie Day
The official Pie Day site and the City of Braham describe the annual community festival as occurring on the first Friday in August.
Source-backedFixed AnnualIn-depth guide
Constitution Day
Cook Islands government sources verify Constitution Day on 4 August, current public-holiday status, and the anniversary of self-government in free association beginning on 4 August 1965.
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 Clouded Leopard Day
The Aspinall Foundation records the first International Clouded Leopard Day at Howletts on 4 August 2018 and states that it was intended as an annual international awareness day; World Anim…
Source-backedFixed AnnualIn-depth guide
Single Working Women’s Day
SWWAN creator-side history verifies Barbara Payne/SWWAN lineage and August 4 rationale while leaving the Day’s exact first recurring edition unresolved.
SatAugust 5Date page →
Source-backedFixed AnnualIn-depth guide
National Couscous Day
Ainsley Foods’ first-party page states that it created National Couscous Day for August 5; Ainsley Harriott’s official news archive dates the launch item to August 4, 2020. Supporting obser…
Source-backedRule Based AnnualIn-depth guide
National Disc Golf Day
The Professional Disc Golf Association says the first Saturday in August was selected for National Disc Golf Day in 2016.
Source-backedRule Based AnnualIn-depth guide
National Jamaican Patty Day
Golden Krust says it launched National Jamaican Patty Day in 2015 and celebrates it annually on the first Saturday in August.
SunAugust 6Date page →
Source-backedRule Based AnnualIn-depth guide
American Family Day
Arizona Revised Statutes §1-301 enumerates American Family Day on the first Sunday in August and excludes it from the following-Monday substitution rule; origin details remain unresolved in…
Source-backedFixed AnnualIn-depth guide
Independence Day
Bolivia’s Supreme Decree No. 2750 lists 6 August, Día de la Independencia de Bolivia, among national holidays with suspension of public and private activities. Bolivian Vice Presidency hist…
Source-backedFixed AnnualIn-depth guide
Farmworker Appreciation Day
The CDC/NIOSH Science Bulletin states that August 6 is Farmworker Appreciation Day and uses the observance to recognize farmworkers and discuss occupational safety and health.
Source-backedFixed AnnualIn-depth guide
Hiroshima Peace Memorial Ceremony / 6 August remembrance
Hiroshima City holds the Peace Memorial Ceremony every year on 6 August and traces the ceremony/Peace Declaration lineage to a 6 August 1947 ceremony during the Peace Festival.
Source-backedFixed AnnualIn-depth guide
International Day of Awareness of the Special Development Needs and Challenges of Landlocked Developing Countries
A/RES/79/L.108
Source-backedFixed AnnualIn-depth guide
Jamaica Independence Day
The Organization of American States’ current country page lists Jamaica National Independence Day as 6 August.
Source-backedRule Based AnnualIn-depth guide
National Friendship Day
Hallmark first-party material traces the Friendship Day idea to founder J.C. Hall in 1919, while National Day Calendar supports the current first-Sunday-in-August U.S. recurrence. This iden…
Source-backedRule Based AnnualIn-depth guide
National KidsDay
California ACR 86 describes National KidsDay as a special day set aside each year on the first Sunday in August and identifies a National KidsDay Alliance including Boys & Girls Clubs of Am…
Source-backedFixed AnnualIn-depth guide
National Paralegal Day
The American Bar Association states that NALA, NFPA, NALS and AAfPE joined in 2024 to establish National Paralegal Day on August 6; NALA records the first celebration on August 6, 2024 and…
Source-backedFixed AnnualIn-depth guide
National Root Beer Float Day
A&W’s first-party company history states that every August 6 the brand celebrates National Root Beer Float Day, and A&W’s dedicated observance materials likewise use August 6.
Source-backedRule Based AnnualIn-depth guide
National Sisters Day
National Day Calendar identifies the first Sunday in August as the annual date and attributes creation in 1996 to Tricia Eleogram; New Jersey workforce-engagement material independently use…
MonAugust 7Date page →
Source-backedFixed AnnualIn-depth guide
Aged Care Employee Day
Ageing Australia states that Aged Care Employee Day is held annually on August 7 and its 2026 release recognizes workers across aged care, retirement living and seniors housing.
Source-backedFixed AnnualIn-depth guide
Día de la Batalla de Boyacá
Colombia’s Ministry of Foreign Affairs confirms 7 August 2026 as the commemoration of the Battle of Boyacá and a holiday in Colombia.
Source-backedRule Based AnnualIn-depth guide
British Columbia Day
British Columbia Day Act
Source-backedRule Based AnnualIn-depth guide
Civic Holiday
Government of Ontario regulations and holiday bulletin
Source-backedRule Based AnnualIn-depth guide
Colorado Day
Colorado Revised Statutes
Source-backedFixed AnnualIn-depth guide
Fête de l’Indépendance de la Côte d’Ivoire
Official Ivorian government, presidency and diplomatic sources verify 7 August as the annual Fête de l’Indépendance / Fête Nationale, tie the date to independence on 7 August 1960, and docu…
Source-backedRule Based AnnualIn-depth guide
Heritage Day
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…
Source-backedRule Based AnnualIn-depth guide
New Brunswick Day
New Brunswick Day Act / Government of New Brunswick
Source-backedRule Based AnnualIn-depth guide
New South Wales Bank Holiday
NSW Government guidance verifies the first Monday in August and expressly says the Bank Holiday is not a declared public holiday. Part 3A of the Retail Trading Act 2008 supplies the current…
Source-backedFixed AnnualIn-depth guide
Particularly Preposterous Packaging Day
The first-party Wellcat Holidays calendar lists Particularly Preposterous Packaging Day on August 7, while Wellcat’s creator biography identifies Ruth and Tom Roy as creators of its holiday…
Source-backedFixed AnnualIn-depth guide
Purple Heart Day
U.S. Army sources describe the day as observed annually on 7 August; VA history establishes the 1782 Badge of Military Merit date anchor while the modern day’s founder remains unresolved.
Source-backedRule Based AnnualIn-depth guide
Terry Fox Day
Legislative Assembly / Laws of Manitoba
TueAugust 8Date page →
Source-backedFixed AnnualIn-depth guide
Digital Nomad Day
Rootless Living Magazine’s dated 2020 first-party press release announced the first annual National Digital Nomad Day for 8 August 2020; its 2021 newsroom calls the next edition the second…
Source-backedFixed AnnualIn-depth guide
Happiness Happens Day
The Society of Happy People identifies 8 August as Happiness Happens Day and maintains a dedicated celebration page for the observance.
Source-backedFixed AnnualIn-depth guide
International Allyship Day
ISSA event material identifies Integrating Women Leaders Foundation as a founding collaborator of International Allyship Day and states that it is celebrated on 8 August; institutional cale…
Source-backedFixed AnnualIn-depth guide
International Cat Day
International Cat Care identifies International Cat Day on August 8 and describes itself as the custodian/coordinator of the day.
Source-backedFixed AnnualIn-depth guide
National Pickleball Day
A 2025 Forbes interview with founder Deirdre “Dee” Morris documents why she selected August 8 and describes 2025 as the fifth annual U.S. National Pickleball Day; current observance sources…
Source-backedFixed AnnualIn-depth guide
Sneak Some Zucchini onto Your Neighbors' Porch Day
The first-party Wellcat Holidays calendar lists Sneak Some Zucchini onto Your Neighbors' Porch Day on August 8 and identifies the Wellcat Holidays collection as created by Thomas and Ruth R…
Source-backedFixed AnnualIn-depth guide
National Tarantula Appreciation Day
National Day Archives records August 8 each year for National Tarantula Appreciation Day and identifies Palp Friction Tarantulas as the creator in 2019.
Source-backedFixed AnnualIn-depth guide
Augsburger Hohes Friedensfest (Augsburg High Peace Festival)
The City of Augsburg states that the Hohe Friedensfest is observed annually on 8 August as a municipal holiday applying only within Augsburg city limits, and that it is unique in Germany.
Source-backedFixed AnnualIn-depth guide
Scottish Wildcat Day
Action for Earth states that it founded Scottish Wildcat Day in 2016 and celebrates it every August 8; Royal Dornoch independently marked August 8 as Scottish Wildcat Day while supporting t…
WedAugust 9Date page →
Source-backedFixed AnnualIn-depth guide
International Day of the World's Indigenous Peoples
A/RES/49/214
Source-backedFixed AnnualIn-depth guide
Nagasaki Peace Memorial Ceremony
Japan’s Prime Minister’s Office documents the Nagasaki Peace Memorial Ceremony on 9 August 2026, while Nagasaki’s official visitor information says the ceremony is held on 9 August every ye…
Source-backedFixed AnnualIn-depth guide
National Women’s Day
South Africa’s government lists National Women’s Day on 9 August and applies the statutory next-Monday rule when a public holiday falls on a Sunday; government material also describes the a…
Source-backedFixed AnnualIn-depth guide
National Day
Singapore’s National Archives documents the first National Day celebrations in 1966 and the August 1966 switch from the announced name Independence Day to National Day; Singapore’s Independ…
Source-backedFixed AnnualIn-depth guide
Day of the Indigenous Peoples (Inheemsendag)
Suriname government messages state that Indigenous Peoples Day is celebrated on August 9 each year.
Source-backedRule Based AnnualIn-depth guide
World Calligraphy Day
A calligraphy museum account states that World Calligraphy Day was established in 2017 by Manuscript Pen Company with the Pen Museum and is marked on the second Wednesday of August.
ThuAugust 10Date page →
Source-backedFixed AnnualIn-depth guide
Abai Day
Government Resolution No. 495 of 4 August 2020 added Abai Day — 10 August — to Kazakhstan’s official list of commemorative/holiday dates; current government material continues to mark the d…
Source-backedFixed AnnualIn-depth guide
Traditional Return of Santo Domingo de Guzmán (Managua)
Current 2026 Nicaraguan coverage documents the traditional return of the image of Santo Domingo de Guzmán to Las Sierritas on 10 August; separate current reporting records 1 and 10 August a…
Source-backedFixed AnnualIn-depth guide
Primer Grito de Independencia / 10 de Agosto de 1809
Ecuador government sources anchor the historical commemoration to August 10, 1809 and treat August 10 as a mandatory national holiday subject to the country’s statutory transfer rules.
Source-backedFixed AnnualIn-depth guide
Duran Duran Appreciation Day
Duran Duran’s own site repeatedly recognizes August 10 as Duran Duran Appreciation Day while explicitly noting that the band did not establish the day and is unsure of its origin.
Source-backedFixed AnnualIn-depth guide
National Connecticut Day
National Day Calendar lists National Connecticut Day on August 10 within its privately created National State Days series. Connecticut’s January 9, 1788 statehood date is kept separate, and…
Source-backedFixed AnnualIn-depth guide
Spoil Your Dog Day
The Animal Medical Center repeatedly lists Spoil Your Dog Day on August 10 across annual pet-awareness calendars.
Source-backedFixed AnnualIn-depth guide
International Vlogging Day
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-backedFixed AnnualIn-depth guide
World Lion Day
Current conservation sources verify August 10 recurrence, while World Animal Protection and National Geographic attribute the 2013 founding to Dereck and Beverly Joubert.
FriAugust 11Date page →
Source-backedFixed AnnualIn-depth guide
Chad Independence Day
Chadian government sources identify 11 August 1960 as the date of independence and continue the national commemoration in 2026.
Source-backedFixed AnnualIn-depth guide
Mountain Day (山の日)
Japan’s Act on National Holidays, as amended by Act No. 43 of 2014, establishes Mountain Day on 11 August and states its purpose as providing an opportunity to become familiar with mountain…
Source-backedFixed AnnualIn-depth guide
World Steelpan Day
A/RES/77/316
SatAugust 12Date page →
Source-backedFixed AnnualIn-depth guide
International Youth Day
A/RES/54/120
Source-backedFixed AnnualIn-depth guide
National Mother’s Day
Thailand’s Cabinet confirmed in July 2026 that 12 August every year remains National Mother’s Day, alongside the Birthday Anniversary of Queen Sirikit The Queen Mother, and remains an annua…
Source-backedFixed AnnualIn-depth guide
National Gooey Butter Cake Day
Schnucks’ first-party page states that National Gooey Butter Cake Day is August 12 and that the observance was created by Schnucks; supporting observance history dates the launch to 2019.
Source-backedFixed AnnualIn-depth guide
World Elephant Day
World Elephant Day first-party history identifies an inaugural August 12, 2012 launch, Patricia Sims and the Elephant Reintroduction Foundation as co-founders, and continuing campaign leade…
SunAugust 13Date page →
Source-backedFixed AnnualIn-depth guide
International Left-Handers Day
The Left-Handers Club states that it launched International Left-Handers Day on 13 August 1992 and continues to identify August 13 as the annual observance date.
Source-backedRule Based AnnualIn-depth guide
Turkmen Melon Day
Turkmenistan government sources repeatedly state that Turkmen Melon Day is celebrated every year on the second Sunday of August and describe it as a national holiday.
Source-backedRule Based AnnualIn-depth guide
Spirit of ’45 Day
A U.S. congressional concurrent resolution supports observance of Spirit of ’45 Day on the second Sunday in August
Source-backedFixed AnnualIn-depth guide
Women’s Day (Tunisia) / Fête de la Femme
The Tunisian government FAQ lists Fête de la Femme on 13 August among holidays granting leave to state/public-sector personnel and cites Decree No. 2011-317; Tunisia’s Ministry of Justice s…
MonAugust 14Date page →
Source-backedFixed AnnualIn-depth guide
Anniversary of the Recovery of Oued Ed-Dahab
Morocco’s official national-holiday page lists August 14 under the title Anniversary of the Recovery of Oued Ed-Dahab; the United Nations continues to list Western Sahara as a Non-Self-Gove…
Source-backedFixed AnnualIn-depth guide
National Financial Awareness Day
Michigan DIFS identifies August 14 as National Financial Awareness Day in 2025, and Tennessee TDCI identifies Friday, August 14, 2026 as the observance date.
Source-backedFixed AnnualIn-depth guide
National Tattoo Removal Day
Astanza announced National Tattoo Removal Day for August 14 and identifies itself as an organizer of the observance.
Source-backedFixed AnnualIn-depth guide
National Navajo Code Talkers Day
The Navajo Nation Office of the President and Vice President recognizes 14 August as National Navajo Code Talkers Day.
Source-backedFixed AnnualIn-depth guide
Pakistan Independence Day
Pakistan Cabinet Division lists Independence Day on 14 August 2026 as a public holiday, and National Assembly history records the transfer of power on 14 August 1947. The Indian Independenc…
Source-backedFixed AnnualIn-depth guide
Hari Pramuka
Indonesian government coverage marks Hari Pramuka on 14 August and connects it with youth character, leadership and service
Source-backedRule Based AnnualIn-depth guide
Victory Day
Rhode Island General Laws §25-1-1 establishes Victory Day as a legal state holiday on the second Monday in August; current Rhode Island state calendars continue to publish the holiday, and…
Source-backedFixed AnnualIn-depth guide
World Lizard Day
Akron Zoo states that World Lizard Day is celebrated each year on August 14, and Utah’s Hogle Zoo independently lists World Lizard Day on August 14 in its current animal-highlight calendar.…
TueAugust 15Date page →
Source-backedFixed AnnualIn-depth guide
Asunción de la Virgen
Spain’s national labor-holiday regulation lists 15 August as Asunción de la Virgen within the national holiday framework.
Source-backedFixed AnnualIn-depth guide
National Check the Chip Day
AAHA states that it and AVMA launched Check the Chip Day in 2013; AVMA and AAHA materials identify August 15 as the annual recurrence and focus on current microchip registry contact informa…
Source-backedFixed AnnualIn-depth guide
Independence Day
Republic of the Congo laws directly list August 15 as the national holiday, including Law No. 19-2010, which adopts August 15 of every year in commemoration of the proclamation of independe…
Source-backedFixed AnnualIn-depth guide
Solemnity of the Assumption of the Blessed Virgin Mary
Vatican sources identify August 15 as the Solemnity of the Assumption, document an established August 15 celebration by the fifth century, and distinguish that ancient feast from Pope Pius…
Source-backedFixed AnnualIn-depth guide
Fundación de Panamá la Vieja / Foundation of Panama Viejo
Panama’s Law 14 of 20 January 1955 recognizes 15 August 1519 as the foundation date of Panama City and declares 15 August each year a holiday for the District of Panama; municipal and herit…
Source-backedFixed AnnualIn-depth guide
Founding anniversary of Asunción
Paraguay’s Chamber of Deputies and the Municipality of Asunción mark 15 August as the city’s founding anniversary and identify 1537 as the founding year.
Source-backedFixed AnnualIn-depth guide
Independence Day
The Indian Independence Act 1947 establishes the August 15, 1947 constitutional transition, while current Government of India sources independently verify annual August 15 Independence Day…
Source-backedFixed AnnualIn-depth guide
National Day
Liechtenstein government material identifies National Day on 15 August, says the Government introduced it in 1940, and explains that the date combined the Feast of the Assumption with the e…
Source-backedFixed AnnualIn-depth guide
National Acadian Day
Government of Canada / Canadian Heritage; celebrated since 1881 and recognized in federal law in 2003
Source-backedFixed AnnualIn-depth guide
National Leathercraft Day
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.
Source-backedFixed AnnualIn-depth guide
National Liberation Day of Korea (Gwangbokjeol)
Korea.net identifies 15 August as National Liberation Day (Gwangbokjeol) and describes it as an annual national commemoration.
Source-backedFixed AnnualIn-depth guide
National Shoe Donation Day
DSW/Designer Brands and Soles4Souls identify August 15 as National Shoe Donation Day; the first named observance was in 2025 and current partners continue to use the date.
WedAugust 16Date page →
Source-backedFixed AnnualIn-depth guide
Bennington Battle Day
Vermont statute 1 V.S.A. §371 lists Bennington Battle Day on 16 August as a legal holiday, and the Vermont historic-preservation agency documented the 2026 commemoration.
Source-backedFixed AnnualIn-depth guide
National Airborne Day
A 2002 presidential proclamation designated August 16 as National Airborne Day in connection with the first official Army parachute jump on August 16, 1940. Senate resolutions have repeated…
Source-backedFixed AnnualIn-depth guide
National Independent Worker Day
National Day Archives records National Independent Worker Day on August 16 and attributes its creation to iPSE-U.S. in 2019; current brand recognition provides additional corroboration.
Source-backedFixed AnnualIn-depth guide
National Rum Day
Bacardi Limited first-party releases on August 16 explicitly identify the date as National Rum Day, including separate BACARDÍ and Santa Teresa brand material.
Source-backedFixed AnnualIn-depth guide
National Work From Home for Wellness Day
NexRep states that it established National Work from Home for Wellness Day, celebrates it annually on August 16, and launched the holiday on August 16, 2023. The exact reason for selecting…
Source-backedFixed AnnualIn-depth guide
Feast of St. Roch
Vatican News’ calendar of saints lists St. Roch, Pilgrim, on August 16.
ThuAugust 17Date page →
Source-backedFixed AnnualIn-depth guide
Black Cat Appreciation Day
UPI reports that Wayne H. Morris started Black Cat Appreciation Day in 2011; ASPCA independently documents August 17 recurrence and continued shelter/adoption-awareness use.
Source-backedFixed AnnualIn-depth guide
Fête nationale / Independence anniversary of Gabon
The Presidency of Gabon documented the country’s national celebration on 17 August 2026 as the 66th anniversary of accession to international sovereignty.
Source-backedFixed AnnualIn-depth guide
Independence Day / Proclamation anniversary
Indonesia State Secretariat and official presidential holiday regulations verify the August 17 Proclamation anniversary, annual state ceremony and national-holiday framework.
Source-backedFixed AnnualIn-depth guide
National Massachusetts Day
National Day Calendar lists National Massachusetts Day on 17 August. The U.S. Senate records Massachusetts’s admission/statehood date as 6 February 1788. The two dates are deliberately kept…
Source-backedFixed AnnualIn-depth guide
National Workers’ Comp Adjuster Day
National Day Archives lists August 17 and attributes creation in July 2021 to Centre for Neuro Skills; the creator attribution is not treated as independently verified without a first-party…
Source-backedFixed AnnualIn-depth guide
Paso a la Inmortalidad del General José de San Martín
Government of Argentina
Source-backedFixed AnnualIn-depth guide
Unification of Prekmurje Slovenes with the Mother Nation
Slovenia’s current Holidays and Days Off Act lists August 17 as the incorporation of Prekmurje and unification of Prekmurje Slovenes with the mother nation and expressly keeps it non-work-f…
FriAugust 18Date page →
Source-backedFixed AnnualIn-depth guide
Bad Poetry Day
The first-party Wellcat Holidays calendar lists Bad Poetry Day on August 18 and identifies the collection as created by Thomas and Ruth Roy.
Source-backedFixed AnnualIn-depth guide
Constitution Day of the Republic of Indonesia
Indonesian government statistical-agency pages identify 18 August as Constitution Day of the Republic of Indonesia and describe it as an annual commemoration.
Source-backedFixed AnnualIn-depth guide
Long Tan Day (historical name; now Vietnam Veterans’ Day)
Australian War Memorial and Department of Veterans’ Affairs: historical Long Tan Day name; now Vietnam Veterans’ Day August 18
Source-backedFixed AnnualIn-depth guide
World Breast Cancer Research Day
The official campaign says the Dr Susan Love Foundation founded World Breast Cancer Research Day in 2021 for August 18 and documents a 2024 mission transition to Tower Cancer Research Found…
SatAugust 19Date page →
Source-backedFixed AnnualIn-depth guide
Independence Day
Current Afghan government material commemorated Independence Day on 19 August 2026 (28 Asad) as the 107th anniversary of the country’s independence, while the Afghan Consulate in Mumbai’s 2…
Source-backedRule Based AnnualIn-depth guide
International Geocaching Day
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…
Source-backedRule Based AnnualIn-depth guide
International Homeless Animals’ Day®
ISAR states it created International Homeless Animals’ Day in 1992 and observes it annually on the third Saturday in August; the 2026 date is August 15.
Source-backedFixed AnnualIn-depth guide
International Orangutan Day
Orangutan Foundation identifies International Orangutan Day on August 19 and uses the date for orangutan conservation awareness
Source-backedFixed AnnualIn-depth guide
National Aviation Day
36 U.S.C. §118 authorizes U.S. presidential proclamations designating August 19 as National Aviation Day; original recurring proclamation was issued in 1939, distinct from a one-time May 19…
Source-backedFixed AnnualIn-depth guide
National Patient Advocacy Day
Independent institutional sources from ACS CAN (2024), California CDCR (2025) and Patients For Affordable Drugs (2026) recognize National Patient Advocacy Day on August 19; the reviewed ins…
Source-backedFixed AnnualIn-depth guide
World Photography Day
The event organizer describes World Photography Day as an annual worldwide celebration on 19 August and confirms Wednesday, 19 August 2026.
Source-backedFixed AnnualIn-depth guide
Anniversary of Vietnam’s August Revolution
Vietnam Government and Vietnam News Agency material consistently commemorate August 19 as the anniversary of the August Revolution of 1945; the reviewed sources support a recurring national…
Source-backedFixed AnnualIn-depth guide
World Humanitarian Day
A/RES/63/139
SunAugust 20Date page →
Source-backedFixed AnnualIn-depth guide
Anniversary of the Revolution of the King and the People
Morocco’s official national-holiday page lists 20 August as the Anniversary of the Revolution of the King and the People; royal materials provide the national historical framing.
Source-backedFixed AnnualIn-depth guide
National Radio Day
August 20 is strongly institutionally corroborated, while the current National Radio Day organizer explicitly states that there is no one authoritative source for the observance’s origin; c…
Source-backedFixed AnnualIn-depth guide
20 August — celebration of the founding of the State / Saint Stephen’s Day
Hungary’s Fundamental Law names 20 August as a national holiday commemorating the foundation of the state and King Saint Stephen and identifies it as the official state holiday; current Hun…
MonAugust 21Date page →
Source-backedFixed AnnualIn-depth guide
International Day for Underwater Cultural Heritage
Proclaimed at UNESCO’s 43rd General Conference (2025)
Source-backedFixed AnnualIn-depth guide
International Day of Remembrance and Tribute to the Victims of Terrorism
A/RES/72/165
Source-backedFixed AnnualIn-depth guide
National Report Upcoding Fraud Day
National Day Archives currently records August 21 and attributes the observance to The Hesch Firm / Joel D. Hesch with a 2017 start. No surviving first-party Hesch founder source for this s…
Source-backedFixed AnnualIn-depth guide
Ninoy Aquino Day
Republic Act No. 9256
TueAugust 22Date page →
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-backedFixed AnnualIn-depth guide
International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief
A/RES/73/296
Source-backedFixed AnnualIn-depth guide
National Surgical Oncologist Day
National Day Calendar’s proclamation record identifies the founders and establishes August 22 as the annual observance date; the Society of Surgical Oncology has also recognized the day.
Source-backedFixed AnnualIn-depth guide
National Take Your Cat to the Vet Day
Feline Veterinary Medical Association material identifies August 22 as National Take Your Cat to the Vet Day and uses the observance for feline wellness-visit education; reviewed sources do…
Source-backedFixed AnnualIn-depth guide
Day of the State Flag of the Russian Federation
Current EMERCOM material states that the Day of the State Flag of the Russian Federation is observed annually on 22 August and was established by Presidential Decree No. 1714 of 20 August 1…
Source-backedFixed AnnualIn-depth guide
World Plant Milk Day
The World Plant Milk Day campaign identifies 22 August as its annual date, while ProVeg documents the campaign’s 2017 launch with Plant Based News.
WedAugust 23Date page →
Source-backedFixed AnnualIn-depth guide
International Day for the Remembrance of the Slave Trade and Its Abolition
UNESCO 29 C/Resolution 40
Source-backedFixed AnnualIn-depth guide
European Day of Remembrance for Victims of Stalinism and Nazism
The European Parliament adopted Written Declaration P6_DCL(2008)0044 / P6_TA(2008)0439 on 23 September 2008 proposing 23 August as the European Day of Remembrance for Victims of Stalinism a…
Source-backedFixed AnnualIn-depth guide
Health Unit Coordinator Day / Health Unit Coordinator Recognition Week
NAHUC states that 23 August has been recognized as Health Unit Coordinator Day and that beginning in 2017 the association expanded recognition to the full week of 23–29 August.
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-backedFixed AnnualIn-depth guide
National Space Day
Government of India Department of Space Notification F. No. DS_5-18013/8/2023-V, dated 13 October 2023, declares August 23 every year as National Space Day to commemorate the Chandrayaan-3…
ThuAugust 24Date page →
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
National Flag Day
Liberia’s Ministry of Foreign Affairs states that an Act of the National Legislature approved on 25 October 1915 declared August 24 of each year National Flag Day and a national/public holi…
Source-backedFixed AnnualIn-depth guide
National SKAM Artist Day
National Day Archives records August 24 as National SKAM Artist Day and identifies SKAM Artist as the 2020 founder; current annual calendars preserve August 24.
Source-backedFixed AnnualIn-depth guide
Independence Day of Ukraine
A 2026 Ukrainian state-administration page states that 24 August has been Ukraine’s official Independence Day and main public holiday.
FriAugust 25Date page →
Source-backedFixed AnnualIn-depth guide
National Park Service Founders Day
The National Park Service identifies 25 August 1916 as the date of the Organic Act creating the agency and recognizes 25 August as Founders Day.
Source-backedFixed AnnualIn-depth guide
Independence Day
Uruguay Presidency, culture ministry and IMPO legal sources verify the August 25 Declaratoria de la Independencia commemoration, 1825 historical anchor and current paid-holiday treatment.
SatAugust 26Date page →
Source-backedFixed AnnualIn-depth guide
National Day of Repentance
Papua New Guinea government calendars list National Day of Repentance on 26 August, including the 2026 and 2027 public-holiday schedules.
Source-backedFixed AnnualIn-depth guide
National Dog Day
Founder Colleen Paige’s current holiday list identifies National Dog Day on August 26; the National Dog Day site describes the annual observance and its founding.
Source-backedFixed AnnualIn-depth guide
Women’s Equality Day
A current Presidential message dated 26 August 2025 recognizes Women’s Equality Day and ties the observance to the certification of the Nineteenth Amendment on 26 August 1920.
SunAugust 27Date page →
Source-backedFixed AnnualIn-depth guide
Lyndon Baines Johnson Day
Texas Government Code §662.003(b)(5) fixes August 27 as Lyndon Baines Johnson Day in observance of Johnson’s birthday. Texas legislative/history sources trace the holiday to 1973 legislatio…
Source-backedFixed AnnualIn-depth guide
Independence Day of the Republic of Moldova
The Government of Moldova states that the Republic marks Independence Day on 27 August and that Moldova proclaimed independence on 27 August 1991; the 2026 programme marked the 35th anniver…
Source-backedRule Based AnnualIn-depth guide
Social Justice Sunday
The Australian Catholic Bishops’ social-justice office verifies the current last-Sunday-in-August rule, the former last-Sunday-in-September schedule and the change from 2020.
Source-backedFixed AnnualIn-depth guide
World Lake Day
A/RES/79/142
MonAugust 28Date page →
Source-backedFixed AnnualIn-depth guide
Emirati Women’s Day
The UAE government states Emirati Women’s Day is observed annually on 28 August; federal ministry pages list the 2026 observance on that date.
Source-backedRule Based AnnualIn-depth guide
Summer Bank Holiday (England and Wales)
GOV.UK
Source-backedFixed AnnualIn-depth guide
Rainbow Bridge Remembrance Day
Founder Deborah Barnes directly documents the first annual August 28 observance in 2015, its date rationale in memory of Mr. Jazz, and continuing 2026 stewardship.
TueAugust 29Date page →
Source-backedFixed AnnualIn-depth guide
International Day against Nuclear Tests
A/RES/64/35
Source-backedFixed AnnualIn-depth guide
National Sports Day (India)
Government of India sources state that National Sports Day is celebrated every year on 29 August in honour of hockey legend Major Dhyan Chand; the 2026 campaign also centers the 29 August b…
WedAugust 30Date page →
Source-backedFixed AnnualIn-depth guide
International Day of the Victims of Enforced Disappearances
A/RES/65/209
Source-backedFixed AnnualIn-depth guide
International Whale Shark Day
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-backedRule Based AnnualIn-depth guide
La Tomatina
Ajuntament de Buñol / municipal tourism authority
Source-backedFixed AnnualIn-depth guide
National Grief Awareness Day
Local-government proclamations consistently recognize August 30 and identify Angie Cartwright as the 2014 founder; no federal legal-holiday status or exclusive current national facilitator…
Source-backedFixed AnnualIn-depth guide
Popular Consultation Day
Timor-Leste Law No. 10/2005 designates August 30 as Popular Consultation Day, a fixed-date national public holiday; current Government holiday notices retain that status, and UN records est…
Source-backedFixed AnnualIn-depth guide
August 30 Victory Day
Republic of Türkiye government material identifies August 30 Victory Day with the decisive 1922 victory and continuing annual commemoration. Current national-holiday law, Law No. 2429, list…
ThuAugust 31Date page →
Source-backedFixed AnnualIn-depth guide
Birth Anniversary of President Ramon Magsaysay
Republic Act No. 7792 declares 31 August each year a special nonworking public holiday in the Province of Zambales to commemorate former President Ramon Magsaysay’s birth anniversary; curre…
Source-backedFixed AnnualIn-depth guide
International Day for People of African Descent
A/RES/75/170
Source-backedFixed AnnualIn-depth guide
Independence Day
Kyrgyz government sources identify August 31 as Independence Day and date the Declaration of State Independence to 31 August 1991.
Source-backedFixed AnnualIn-depth guide
Malaysia Independence Day / Hari Kemerdekaan
Malaysia’s official government portal lists Hari Kebangsaan on August 31 as a nationwide federal public holiday; National Archives material verifies the 31 August 1957 independence proclama…
Source-backedFixed AnnualIn-depth guide
National Diatomaceous Earth Day
EP Minerals states that it founded National Diatomaceous Earth Day, that National Day Calendar approved the day in 2016, and that the observance is on August 31.
Source-backedFixed AnnualIn-depth guide
National South Carolina Day
National Day Calendar lists the private National South Carolina Day on August 31. The U.S. Senate records South Carolina’s statehood/ratification date as May 23, 1788, while South Carolina…
Source-backedFixed AnnualIn-depth guide
Trinidad and Tobago Independence Day
The Organization of American States’ current country page lists Trinidad and Tobago National Independence Day as 31 August.
Source-backedFixed AnnualIn-depth guide
World Distance Learning Day
Georgia State University, LSU and other education institutions identify August 31 as World Distance Learning Day, supporting a stable recurring date while not implying a UN designation.