List of occasions known by their dates

Many occasions, such as holidays and events, are named after or commonly referred to by the calendar day on which they fall.

Holidays

Date Name Other names Observed in Description March 15 Ides of March Ancient Rome Day noted for various religious festivities, and the anniversary of Julius Caesar's assassination. April 1 April Fool's Day Worldwide Observance known for hoaxes and pranks. April 20 420 Worldwide An informal observance celebrating the recreational use of cannabis.April 2525 de AbrilFreedom DayPortugalCommemorates the Carnation Revolution that ended the dictatorship and paved the way for democracy. May 1 May Day International Workers' Day Worldwide Ancient spring festival and labor celebration commemorating the eight-hour day. May 5 Cinco de Mayo United States, Mexico Spanish for "fifth of May". Commemorates the Mexican army's victory over French forces at the Battle of Puebla on May 5, 1862. May 9 9 May Victory Day Russia, Israel, and many other nations Marks the capitulation of Nazi Germany to the Soviet Union in World War II on 8 May 1945. May 24 May Two-Four Victoria Day (French: Fête de la Reine) Canada Celebrates the birthday of Queen Victoria and the current reigning Canadian Monarch. Observed on the last Monday preceding May 25. June 19 Juneteenth Emancipation Day United States Commemorates the end of slavery in Texas as a result of the Emancipation Proclamation. July 4 Fourth of July Independence Day United States Commemorates the United States' adoption of the Declaration of Independence on July 4, 1776. The Ninth of Av Tisha B'Av Israel, and by Jews worldwide An annual fast day in Judaism which commemorates the anniversary of a number of disasters in Jewish history. (see description) Double Ninth Festival Chung Yeung Festival China, Vietnam, Korea A traditional Chinese holiday observed on the 9th day of the 9th month in the Chinese calendar. October 10 Double Ten Day National Celebration Day Republic of China (Taiwan) National day of Taiwan, commemorating the start of the Wuchang Uprising on October 10, 1911. November 5 Fifth of November Guy Fawkes Night England, some Commonwealth nations Commemorates the arrest of Gunpowder Plot conspirator Guy Fawkes on 5 November 1605.

Historical events Date Name Other names Description June 1, 1794 Glorious First of June Third Battle of Ushant A naval battle between Great Britain and France during the French Revolutionary Wars. March 31, 1909 31 March Incident Political crisis within the Ottoman Empire in April 1909, during the Second Constitutional Era. March 1, 1919 March 1st Movement Korean independence movement. May 4, 1919 May Fourth Movement Chinese sociopolitical movement originating from protests that occurred on May 4, 1919. May 30, 1925 May Thirtieth Movement Major labor and anti-imperialist movement during the middle-period of the Republic of China era. April 12, 1927 Shanghai massacre April 12 Incident Violent suppression of Chinese Communist Party organizations and leftist elements in Shanghai by forces supporting General Chiang Kai-shek and conservative factions in the Kuomintang. January 28, 1932 January 28 incident Conflict between the Republic of China and the Empire of Japan. May 15, 1932 May 15 incident Attempted coup d'état in the Empire of Japan. December 9, 1935 December 9th Movement Mass protest led by students in Beiping to demand that the Chinese government actively resist Japanese aggression. February 26, 1936 February 26 incident 2/26 Attempted coup d'état in the Empire of Japan. July 7, 1937 Marco Polo Bridge Incident July 7 Incident Battle during July 1937 in the district of Beijing between China's National Revolutionary Army and the Imperial Japanese Army.July 20, 194420 July plotAttempted assassination of Adolf Hitler. February 28, 1947 February 28 incident Anti-government uprising in Taiwan that was violently suppressed by the Kuomintang–led nationalist government of the Republic of China. October 17, 1952 17 October affair Event during which Indonesian soldiers pressured the president to disband the Provisional People's Representative Council. September 30, 1965 30 September Movement Self-proclaimed organization of Indonesian National Armed Forces members who, in the early hours of 1 October 1965, assassinated six Indonesian Army generals in an abortive coup d'état. May 13, 1969 13 May incident Episode of Sino-Malay sectarian violence that took place in Kuala Lumpur, the capital of Malaysia. April 19, 1970 19th of April Movement Colombian urban guerrilla movement active in the late 1970s and 1980s, named after the 1970 Colombian general election. November 20, 1936 and 1975 20-N Deaths of José Antonio Primo de Rivera, Falange Española, and Francisco Franco. May 13, 1985 1985 MOVE bombing Police standoff with the Black power group MOVE that culminated in an airstrike and the collateral destruction of residential homes in Cobbs Creek, Philadelphia. June 4, 1989 1989 Tiananmen Square protests and massacre June Fourth Incident Chinese pro-democracy protests that ended in a violent government crackdownApril 19, 1995Oklahoma City bombingA car bomb attack in the Alfred P. Murrah Federal Building, and remains the deadliest act of domestic terrorism in U.S. history. September 11, 2001 September 11th 9/11 Four coordinated suicide attacks by plane hijacking upon the United States by Islamist militant group al-Qaeda. March 11, 2004 2004 Madrid train bombings 11M Series of coordinated, nearly simultaneous bombings against the Cercanías commuter train system of Madrid, Spain. July 7, 2005 7 July 2005 London bombings 7/7 Series of four coordinated suicide attacks carried out by Islamic terrorists in London that targeted commuters travelling on the city's public transport system. March 23, 2009 March 23 Movement M23 Rebel military group that is for the most part formed of ethnic Tutsi, based in eastern areas of the Democratic Republic of the Congo.March 11, 20112011 Tōhoku earthquake and tsunami3/11Earthquake and tsunami in the Tōhoku region of Japan. July 22, 2011 2011 Norway attacks 22. juli A car bomb attack on Regjeringskvartalet in Oslo, Norway, followed by a shooting massacre on Utøya. January 20, 2017 DisruptJ20 An organization that protested and attempted to disrupt events of the presidential inauguration of the 45th U.S. President, Donald Trump. January 6, 2021 January 6 United States Capitol attack January 6th, J6 Attack on the United States Capitol by supporters of President Trump to prevent the counting of electoral college votes from the recent presidential election.October 7, 20232023 Hamas-led attack on IsraelOctober 7

List of occasions known by their dates

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