2,411 researched observances. Search for a specific name or known alternate name.
Current Turkmenistan government material verifies annual Constitution and State Flag Day on May 18; official historical material dates adoption of the Constitution to 18 May 1992.
The Government of Andorra’s official embassy holiday calendar lists 14 March as Constitution Day.
Thailand’s Board of Investment official 2026 holiday information lists 10 December 2026 as Constitution Day.
Republic of Korea government sources identify 17 July as Constitution Day, commemorating the Constitution promulgated on 17 July 1948. National Archives records trace its statutory national…
The Government of Uzbekistan identifies 8 December as Constitution Day and states that it is a national public holiday.
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.
Republic of the Marshall Islands parliamentary and diplomatic sources verify May 1 Constitution Day, the Constitution’s May 1, 1979 parliamentary commencement date, and current national-hol…
Seychelles government sources list Constitution Day as a public holiday on 18 June, connect the date with the 1993 constitutional referendum/adoption, and document the 2015 transition from…
Slovak law lists 1 September as Constitution Day of the Slovak Republic; parliamentary history ties the date to adoption of the Constitution on 1 September 1992, while current government gu…
Vanuatu’s Prime Minister’s Office lists Constitution Day on October 5 as a national public holiday; Parliament provides the official 1979–1980 constitutional history while leaving the Octob…
36 U.S.C. §106 designates September 17 as Constitution Day and Citizenship Day and states that it commemorates the Constitution’s signing on September 17, 1787 and recognizes citizens. Publ…
Official Armenian government and presidential sources identify July 5 as Constitution Day and tie it to the national referendum that adopted the Constitution on 5 July 1995.
The official President of Belarus national-holidays register lists Constitution Day on 15 March, and the presidential constitution page states that the Constitution was adopted on 15 March…
Indonesian government statistical-agency pages identify 18 August as Constitution Day of the Republic of Indonesia and describe it as an annual commemoration.
The Office of the President of Kosovo marked Constitution Day on April 9, 2026; earlier Prime Minister communications also identify April 9 as Constitution Day.
The President of Ukraine’s 28 June 2026 address explicitly marks Constitution Day of Ukraine.
Japan’s current government holiday guidance identifies Constitution Memorial Day on 3 May, explains that it commemorates the Constitution taking effect on 3 May 1947, and states that the ho…
The first-party Wellcat Holidays calendar lists Cook Something Bold and Pungent Day on November 8 and identifies the collection as created by Thomas and Ruth Roy.
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…
Current Russian government material recognizes April 12 as Cosmonautics Day; the United Nations independently verifies 12 April 1961 as Yuri Gagarin’s first human space flight, which anchor…
The first-party Wellcat Holidays calendar lists Cranky Co-Workers Day on October 27 and identifies the collection as created by Thomas and Ruth Roy.
The Animal Medical Center repeatedly lists Cuddly Kitten Day on March 23 across annual pet-awareness calendars.
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’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…
Thomas and Ruth Roy’s first-party Wellcat Holidays calendar lists Curling is Cool Day on 23 February and identifies the Wellcat holiday collection as their creation. World Curling material…
Government of Vanuatu
CXPA states that it established and continues to lead Customer Experience Day on the first Tuesday of October
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…
Official Cyprus diplomatic material lists Cyprus National Day on 1 April among the country’s public holidays.
Current Czech law lists 28 September as Czech Statehood Day; the page’s St. Wenceslas wording is a search-facing alias for the statehood observance.
U.S. Army material identifies 6 June 1944 as D-Day and provides source material on the Normandy invasion
Arkansas Act 304 of 2001 established Daisy Gatson Bates Day as an official state holiday on the third Monday in February, paired in the state-government holiday statute with George Washingt…
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.
The Council of Europe Committee of Ministers decided on 26 April 2006 to launch Data Protection Day for annual celebration on 28 January, the anniversary of Convention 108 opening for signa…
The Council of Europe states that its Committee of Ministers designated 28 January as Data Protection Day in 2006 and that the day is now celebrated worldwide under names including Internat…
The U.S. Virgin Islands Governor has proclaimed 1 November as David Hamilton Jackson (Liberty) Day; current government proclamations continue to identify the observance on 1 November.
Official website of the President of Ukraine
South African public-holiday framework / government source verification
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.…
At the 2010 Review Conference of the Rome Statute, States Parties adopted the Kampala Declaration and decided to celebrate July 17 as the Day of International Criminal Justice because July…
Kosovo Law 03/L-064 Article 5.5 lists March 6 as a memorial day; Articles 2 and 5 distinguish public holidays from memorial days
Ministry of Foreign Affairs of Tajikistan
Bulgaria’s State Gazette publishes Council of Ministers Decision No. 37 of 20 January 2011 declaring 1 February the Day of Gratitude and Respect for the Victims of the Communist Regime unde…
South African Government sources list 16 December as Day of Reconciliation under the Public Holidays Act 36 of 1994. Government history explains that the date had distinct earlier meanings,…
OPCW C-20/DEC.10
African Union material states that the OAU instituted the Day of the African Child in 1991 in memory of the children who participated in the 16 June 1976 Soweto uprising; ACERWC material co…
Azerbaijan Ministry of Defence and presidential sources verify 26 June Armed Forces Day, the 22 May 1998 presidential order establishing the observance, and the June 26, 1918 historical dat…
Angola government sources identify 4 February as the Day of the Beginning of the Armed Struggle for National Liberation and document the 2026 national commemoration; the Health Ministry not…
Current Czech law lists 6 July as the Day of the Burning of Master Jan Hus among the state holidays of the Czech Republic.
Bolivia’s Decreto Supremo No. 0405 of 20 January 2010 establishes 22 January each year as the Day of the Foundation of the Plurinational State of Bolivia and a national holiday; the Ministr…
2026 S. Res. 922 agreed September 29, 2026; 2025 S. Res. 468; current Senate annual October 26 designation; not a recurring federal statutory holiday
Dudeism identifies 6 March as its annual Day of the Dude, selected for the film’s theatrical release date.
Proclamation No. 183, s. 2011 declares June 25 of every year the Day of the Filipino Seafarer and directs MARINA to lead the observance; current MARINA material confirms continuing annual o…
Kazakhstan’s 2011 law created December 1 First President’s Day as a state holiday; 2022 legal changes removed it from the non-working holiday law and Government Resolution No. 956 retained…
PEN International states that each year on 15 November it marks the Day of the Imprisoned Writer; PEN traces the campaign to its Writers in Prison Committee in 1981.
Suriname government messages state that Indigenous Peoples Day is celebrated on August 9 each year.
The government holiday guide lists 3 February as Day of the Martyrs of Liberty, and the current Labour Code lists 3 February among mandatory public holidays; the date commemorates the Batep…
Curaçao government material documents the 2 July 1984 inauguration of Dia di Bandera and explains the July 2 historical rationale; the current government portal lists Dia di Himno i Bandera…
Romania’s Law No. 96/1998 proclaims 26 June as National Flag Day and sets commemorative duties for public authorities and institutions; current government material confirms continuing obser…
Russian Presidential Decree No. 1034 established Day of the Programmer on the 256th day of the year: September 13, or September 12 in leap years.
Lithuanian government material lists 16 February as the Day of the Restoration of the State of Lithuania; official parliamentary history ties the date to the Act of Independence signed on 1…
STCW/CONF.2/DC/4
Lithuanian law and government material designate 6 July as the Day of the State associated with the coronation of King Mindaugas. The modern statutory date is clear; the exact medieval coro…
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…
The Government of Slovenia lists April 27 as Day of Uprising Against the Occupation among the country’s national holidays.
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…
Visual AIDS says it organized the first Day Without Art on 1 December 1989; in 1998 the project became Day With(out) Art, and it continues annual 1 December programming.
DEA scheduled the 30th National Prescription Drug Take Back Day for Saturday, April 25, 2026 and explicitly describes Take Back Day as a twice-yearly event.
CODA International designates the last Sunday in April as Deaf Parents Day, also known as Mother Father Deaf Day; CODA Korea independently describes the same last-Sunday-in-April recurrence.
The December 27 memorial anniversary is anchored to Benazir Bhutto’s death on 27 December 2007; State Bank and contemporaneous reporting document the first anniversary in 2008, while curren…
The U.S. Naval Observatory calculates the December 2026 solstice for December 21 at 20:50 Universal Time. USNO explains that solstices mark the beginning of summer and winter and that seaso…
Official website of the President of Russia, current 2026 greeting
