2,411 researched observances. Search for a specific name or known alternate name.
Montserrat’s Public Holidays Act 2024 lists Day of Prayer and Thanksgiving as an annual public holiday on the second Wednesday in July; government notices commonly use National Day of Praye…
The current National Day of Reason campaign and American Humanist Association identify May 4 as the annual observance date; a 2026 U.S. House resolution also recognizes May 4, 2026 without…
Canada’s National Day of Remembrance Act establishes December 6 each year throughout Canada, while current federal material connects the date to remembrance of the 14 women killed at Polyte…
Argentina’s Law 25.633 establishes March 24 as the National Day of Remembrance for Truth and Justice, while current official holiday law treats March 24 as a non-transferable national holid…
Papua New Guinea government calendars list National Day of Repentance on 26 August, including the 2026 and 2027 public-holiday schedules.
The U.S. Senate agreed to S. Res. 452 designating December 13, 2004 as National Day of the Horse; the American Horse Council continues to recognize December 13 as National Day of the Horse.
Current Taiwan government holiday information lists October 10 as National Day, and Presidential Office historical material connects the date to the Wuchang Uprising of October 10, 1911.
A United Nations report records the Iraqi Prime Minister’s announcement that 6 March would henceforth be observed as the National Day of Tolerance and Coexistence following Pope Francis’s 2…
The official Government of Viet Nam information channel identifies 2 September as National Day and documented the 81st National Day anniversary in 2026.
NCTE established the National Day on Writing in 2009 for October 20. Senate Resolution 310 supported the October 20, 2009 designation, which is recognition rather than creation of a federal…
Mauritius public-holiday legislation lists March 12 as the day celebrating Independence Day and Republic Day; government history verifies independence on March 12, 1968 and republic status…
Published event material identifies Solatube International as creator and Solatube describes itself as sponsor of the annual June 21 observance. NASA/NOAA material is used to separate the f…
Urban Rural Action and Ideos Institute document a modern National Days of Dialogue initiative with annual organizer-announced January windows; avoid conflating this with a distinct 1997–98…
Doulagivers identifies April 20 as National Death Doula Day, and observance-registration records trace its creation to Doulagivers in 2019.
UNO stated in 2010 that April 5 is National Deep Dish Pizza Day and that it was first designated in 2009 for UNO’s anniversary; UNO continues to promote the observance.
36 U.S.C. §120 requests an annual presidential proclamation designating the third Friday in May as National Defense Transportation Day and recognizing the importance of the U.S. transportat…
The National DEI Day organizer site states that the observance is held each year on September 17, deliberately coinciding with U.S. Constitution Day and Citizenship Day.
National Day Calendar lists National Delaware Day on July 13 within its privately created National State Days series. Delaware’s December 7, 1787 statehood date is kept separate, and Indige…
The Academy of General Dentistry explicitly celebrated National Dentist Day on March 6, 2025, supporting March 6 for the U.S. observance.
Screening for Mental Health materials and current observance guidance place NDSD on the Thursday of the first full week in October; the 2026 occurrence is October 8.
National Day Calendar’s proclamation and Detroit tourism materials identify Buddy’s Pizza as the founder and June 23 as National Detroit-Style Pizza Day.
NAQ states that it founded Developmental Disability Professionals Day as a stand-alone day every year on 15 July to recognize professionals who support people with intellectual and developm…
National Day Calendar credits Sean Alexander Sobel as founder and records a 2018 private registrar proclamation for April 27. Drake’s product history and Marine Corps historical scholarship…
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.
The U.S. Commission on Civil Rights used the exact name National Disability Independence Day on 26 July 2025, and 2026 state/local government calendars use the observance on 26 July. ADA.go…
The Professional Disc Golf Association says the first Saturday in August was selected for National Disc Golf Day in 2016.
Craft Box Girls states that its team launched the first National DIY Day on April 2, 2016 and established April 2 as the annual date.
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.
City of Huntsville and City of Milford proclamations credit Starr Valentino with starting the grassroots movement in Atlanta in 2009 and recognize May 16 locally; National Day Calendar says…
AMA history places the first Doctors’ Day in Winder, Georgia in 1933; Missouri State Medical Association history credits Eudora Brown Almond with conceiving the observance and explains the…
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.
The ASPCA designated 8 April 2014 as the first National Dog Fighting Awareness Day and described the observance again as its second annual edition in 2015. Public treatment is limited to no…
Current pet calendars consistently place National Dog Mom’s Day on the second Saturday in May; the observance is traced to a 2018 launch associated with Dig.
Creator Kerry Jordan explains that she created the observance, selected July 26 and launched it in 2018; current 2026 coverage continues to use July 26.
Wag! announced the first annual National Dog Walker Appreciation Day for September 8, 2016 and established September 8 as the recognition date.
India’s Press Information Bureau reports that the Standing Committee of the National Board for Wild Life recommended 5 October be celebrated every year as National Dolphin Day to raise cons…
Kazakhstan government material states that National Dombra Day was established in 2018 and is celebrated on the first Sunday of July.
Donate Life America states National Donate Life Blue & Green Day is observed on the second Friday of April each year; New York State health authorities documented the April 10, 2026 observa…
Donate Life America lists National Donor Day on February 14 among its national observances and celebrations.
OrganDonor.gov defines National Donor Sabbath as a three-day observance celebrated two weekends prior to Thanksgiving.
The Salvation Army states that it created the first National Donut Day event in Chicago in 1938 as a fundraiser during the Great Depression and to honor the World War I Donut Lassies; it co…
Traveler Ooh La La identifies itself as founder; National Today and EventGuide support 2024 as the first celebration, and current creator-led material preserves annual November 13 recurrenc…
Ashley Lauren identifies March 6 as National Dress Day and states that the observance was founded by designer Ashley Lauren.
Pet-lifestyle advocate Colleen Paige lists National Dress Up Your Pet Day on 14 January, and observance registries attribute its creation to her.
DriveInMovie.com identifies June 6 as National Drive-In Movie Day, tied to the June 6, 1933 opening of Richard Hollingshead’s drive-in theater.
National Day Calendar records September 26 as National Dumpling Day and says TMI Food Group submitted the observance in 2015.
Lectric eBikes and the Outdoor Industry Association identify May 30 as National E-Bike Day and attribute its establishment to Lectric.
India’s Press Information Bureau states that National Education Day is celebrated every November 11 in honour of Maulana Abul Kalam Azad.
McDonald’s corporate releases establish the March 2 observance in 2020 and again use National Egg McMuffin Day on March 2 in 2025; promotions remain edition-specific.
Federal historical material documents the NAHF third-Wednesday-in-May day; Fairfax County’s 2011 official summary states the observance expanded from one day to the full month, and NAHF now…
New York Senate resolutions for both 2021 and 2022 recognize April 10 in conjunction with the observance of National Encourage a Young Writer Day, independently confirming the recurring mon…
India’s Bureau of Energy Efficiency states that December 14 was declared National Energy Conservation Day and that the annual awards function is organized on December 14 each year.
A September 2018 RESNET-hosted announcement written from EnergyLogic’s perspective says “we’ve created National Energy Geek Day” and identifies October 6 annually; National Day Archives ind…
Thomas’/Bimbo Bakeries USA press materials identify April 23 as National English Muffin Day across multiple years.
Historical White House material documents a 2010 National Entrepreneurship Week and National Entrepreneurs’ Day celebration; modern calendar evidence places the continuing observance on the…
National Day Archives lists National Exercise Day on April 18 and identifies Jeuse Saint-Fleur, DNP as its creator in 2020.
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…
H.Res.1294 and the House roll-call record support designation of the first Saturday in May as National Explosive Ordnance Disposal Day; EOD Warrior Foundation material confirms the current…
The Passionate Olive published a first-party launch on August 18, 2016 for a September 30 Extra Virgin Olive Oil Day; supporting observance references identify The Passionate Olive as found…
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…
NCFL says it worked with Congress in 1994 to create/designate November 1 as National Family Literacy Day®; GovInfo records H.J. Res. 413 and 1994 congressional National Family Literacy Day…
Kennesaw State University’s Family Enterprise Center identifies June 23 as the annual observance and states the AG Center established it in 2021; registration records corroborate the founde…
National Day Calendar states National Family PJ Day was founded in 2019 with Soma and is observed annually on November 14.
Observance and historical-society sources identify April 10 as National Farm Animals Day and trace its creation to Colleen Paige in 2005.
Public proclamations and government education material recognize National Farm Workers Day on March 31, including a 2026 Colorado resolution and local proclamation language describing annua…
USDA Farm Service Agency communications identify October 12 as National Farmers Day in multiple years; a 2026 Delaware concurrent resolution also describes the observance as annual on Octob…
ICAR states that Kisan Diwas is observed annually on 23 December and commemorates Chaudhary Charan Singh’s birth anniversary; Press Information Bureau likewise identifies National Farmers D…
Government of India material identifies National Farmers’ Day, also known as Kisan Diwas, on 23 December.
Liberian government sources tie the second-Friday-in-April national holiday to an 1883 Act, identify the current legal framework, and document continuing presidential proclamation practice…
A creator-issued Finding Fathers Inc. release dated 26 November 2020 records founder Donald R. Adams II proclaiming the fourth Sunday of June as National Fatherless Children’s Day and ident…
Thailand’s Government Public Relations Department states that 5 December, the birthday of the late King Bhumibol Adulyadej The Great, is also observed as Thailand’s National Day and Nationa…
Alley Cat Allies states that it created National Feral Cat Day® in 2001 for October 16. Its primary archives document the 2017 evolution to Global Cat Day® and current material treats Natio…
