Day of Remembrance for all Victims of Chemical Warfare
OPCW C-20/DEC.10
Days of remembrance, memorial observance and collective memory.
This facet contains observances that remember people, losses, conflicts or significant historical events. Sensitive pages should prioritize accurate context and avoid celebratory language where it does not fit.
These pages include reviewed meaning, history, activities, facts and FAQs in addition to the underlying authority record.
OPCW C-20/DEC.10
A/RES/71/125
A/RES/73/296
A/RES/317(IV)
A/RES/69/293
UNESCO 29 C/Resolution 40
French official remembrance guidance cites the 1922 law fixing the annual Victory and Peace commemoration on 11 November, the anniversary of the 1918 Armistice; current law also extends the…
The Presidency of the Republic of Türkiye Directorate of Communications uses the official name 15 July Democracy and National Unity Day and organized the 2026 national commemoration on July…
Hungary’s constitutional framework identifies 15 March as a national holiday commemorating the 1848–49 Revolution and War of Independence.
Nicaragua’s January 2026 official-gazette reform of Labor Code article 66 lists 19 July among mandatory national holidays with paid rest.
Ethiopia’s Proclamation No. 1334/2024 lists March 2 as Adwa Victory Day, a celebrated national holiday, and provides for nationwide observance.
The official Government of The Gambia holiday list names May 25 as African Liberation Day (African Day).
The American Red Cross states that Clara Barton founded the organization on May 21, 1881. The evidence supports a founding anniversary, not a formal national observance named “National Amer…
Uruguay’s Presidency documented the 215th anniversary commemoration of the Battle of Las Piedras on 18 May 2026 and described its place in the country’s independence-era history.
The Presidency of Mexico commemorated the 115th anniversary of the Mexican Revolution on 20 November 2025 and identifies 20 November 1910 as the beginning of the revolutionary movement.
Cuba’s official tourism information lists October 10 as the anniversary of the beginning of the Wars of Independence and a national commemoration day.
San Marino official holiday calendars list 28 July as the Anniversary of the Fall of Fascism and Freedom Day.
San Marino’s official holiday information lists 5 February as the anniversary of liberation of the Republic from Cardinal Alberoni’s occupation, together with the feast of Saint Agatha.
Canadian Heritage states that the anniversary of the Statute of Westminster is celebrated each year on December 11 and describes the associated federal flag protocol.
Australian War Memorial
Republic Act No. 9430 / Senate of the Philippines Legislative Reference
Philippine Presidential proclamation and official legal sources
Ministry of Foreign Affairs, Republic of Uganda
The Arizona Memory Project of the State of Arizona Research Library identifies 14 February as Arizona Statehood Day and records that President Taft signed the statehood bill on 14 February…
France’s Service Public table lists Armistice 1918 on Wednesday 11 November 2026 among the national legal holidays that apply in the overseas framework.
France’s Service Public table lists Armistice 1918 on Wednesday 11 November 2026 among the national legal holidays that apply in the overseas framework.
France’s official Service-Public holiday tables list Armistice 1918 on 11 November in the overseas legal-holiday framework, supporting the fixed date applicable to French Guiana within that…
Government of Mauritius
Employment New Zealand’s 2026 anniversary-date table lists Auckland’s actual anniversary date as 29 January and the 2026 observed date as Monday 26 January.
New Zealand Government’s 2026 regional-anniversary table groups Northland with Auckland, showing an actual date of 29 January and an observed date of Monday, 26 January 2026, while noting t…
The National Historical Commission of the Philippines’ Memorare Manila 1945 marker identifies the Battle for the Liberation of Manila as running from February 3 to March 3, 1945. The SEO ti…
Ecuador’s National Assembly identifies 24 May as the Battle of Pichincha commemoration, and its holiday-law guidance identifies 24 May as the underlying Battle of Pichincha holiday date sub…
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.
The DILG Aurora advocacy calendar lists the birth anniversary of Manlilikha ng Bayan Masino Intaray on April 10 and gives 1943 as the birth year.
The DILG Aurora advocacy calendar lists the birth anniversary of National Artist Atang de la Rama on January 11 and gives 1902 as the birth year.
The DILG Aurora advocacy calendar lists the birth anniversary of National Artist Lino Brocka on April 3 and gives 1939 as the birth year.
The NCCA gives Napoleon Abueva’s birth date as 26 January 1930, and the National Museum explicitly commemorates his birth anniversary on 26 January.
The Imperial Household Agency records Akihito’s birth on 23 December 1933 and abdication on 30 April 2019. The Cabinet Office says Japan’s current Emperor’s Birthday holiday is 23 February…
5 U.S.C. §6103 lists the Birthday of Martin Luther King, Jr. on the third Monday in January as a legal public holiday.
Philippine Presidential proclamation and Republic Act 8491
President George H. W. Bush proclaimed July 28, 1992 as Buffalo Soldiers Day after Congress designated that date for the commemoration.
Employment New Zealand’s 2026 table lists Canterbury’s actual anniversary date as 16 December and the observed date as Friday 13 November, explaining that northern and central Canterbury ob…
Governor of Illinois proclamation published in the Illinois Register
Finland's Ministry for Foreign Affairs diplomatic national-day registry lists the Central African Republic on December 1.
Royal Thai Consulate-General, Ministry of Foreign Affairs
Employment New Zealand’s 2026 anniversary table lists the Chatham Islands actual and observed anniversary date as 30 November.
Michigan's governor proclaimed May 13, 2019 as Children of Fallen Patriots Day, and current state/local government calendars continue to recognize May 13.
The Peruvian Navy’s official 2025 programme and ceremony material commemorates the Battle of Angamos on 8 October together with the Navy’s institutional anniversary.
UAE government sources state that Commemoration Day is observed annually on 30 November to honor those who died in service to the nation
Cambodian government 2026 holiday calendars identify 15 October as the Commemoration Day of the King Father, Norodom Sihanouk.
Burundi’s official holiday information lists 6 April for the assassination of President Cyprien Ntaryamira, and the Presidency documented the 32nd-anniversary national commemoration in Apri…
French Labour Code article L3422-2 designates 10 June in French Guiana (Guyane) as a public holiday for the commemoration of the abolition of slavery.
French Labour Code article L3422-2 designates 27 May in Guadeloupe as a public holiday for the commemoration of the abolition of slavery.
French Labour Code article L3422-2 designates 22 May in Martinique as a public holiday for the commemoration of the abolition of slavery.
French Labour Code article L3422-2 designates 9 October in Saint-Barthélemy as a public holiday for the commemoration of the abolition of slavery.
French Labour Code article L3422-2 currently designates 27 May in Saint-Martin as a public holiday for the commemoration of the abolition of slavery.
Ministry of Foreign Affairs, Republic of Burundi
Ministry of Foreign Affairs, Republic of Burundi
The Government of Haiti documented official activities on 18 November 2025 marking the 222nd anniversary of the Battle of Vertières.
The Presidency of Panama’s January 9, 2026 commemoration honors the martyrs of the events of January 9, 1964 and marks the 62nd anniversary.
Republic Act No. 11120
The Texas State Library lists Confederate Heroes Day on 19 January as an official partial-staffing state holiday and documents its 1973 statutory consolidation; the current FY2027 state sch…
The Government of Vanuatu holiday register lists Constitution Day on 5 October as a national holiday.
The Government of Armenia identifies July 5 as Constitution Day, tied to the 1995 constitutional referendum.
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…
The official constitutional text states that Bunreacht na hÉireann was enacted by the people on 1 July 1937 and came into operation on 29 December 1937.
Official Cyprus diplomatic material lists Cyprus National Day on 1 April among the country’s public holidays.
U.S. Army material identifies 6 June 1944 as D-Day and provides source material on the Normandy invasion
Arkansas gubernatorial material identifies Daisy Gatson Bates Day as a state observance honoring the civil-rights leader; the holiday is observed with Washington’s Birthday in Arkansas.
Official website of the President of Ukraine
Suriname’s labour-law explanatory material documents the February 25 “Day of Liberation and Innovation” designation and later removal from statutory free-day treatment; current reporting co…
Timeanddate lists the Day of Memorial and Respect for Veterans on March 6 in Kosovo and identifies it as an observance/working day; Calendarific independently lists March 6 for 2026.
Bulgaria’s Ministry of Foreign Affairs describes an annual February 1 ceremony connected with the Day of Recognition and Tribute to the Victims of the Communist Regime.
OPCW C-20/DEC.10
The President of Armenia’s 24 April 2026 release records the country’s senior leadership visiting Tsitsernakaberd on the Day of Remembrance for the Victims of the Genocide and paying tribut…
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.
A 2011 law added December 1 as First President’s Day to Kazakhstan’s public-holiday law. Later legal changes removed it from the non-working holiday law, while the government’s current list…