This is a list of selected April 17 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Before doing so, please review the selected anniversaries guidelines. If your suggestion is potentially controversial or relates to a day currently or soon to appear on the Main Page, post it on the talk page instead.
Please note:
- Events listed on the Main Page are selected based on article quality and to provide a diverse range of topics, rather than solely on the importance or significance of the events.
- Only four or five events are featured each day; therefore, not all important or significant events can be included.
- An event is generally excluded if it is already the subject of the scheduled featured article or picture of the day.
To report an error in content currently on the Main Page, see Wikipedia:Main Page/Errors. If a listed event is inaccurate, please first seek consensus and update the corresponding article before making changes here.
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Images
Use only ONE image at a time
Henri Giraud
Minas Geraes' superstructure and bow guns, with wing turrets flanking the superstructure
Mam Tor, Peak District
Ineligible
| Blurb | Reason |
|---|---|
| World Hemophilia Day | stub, needs 3rd party refs |
| 1555 – After 18 months of resistance, Siena surrendered to Florence and was annexed into the Grand Duchy of Tuscany. | needs more footnotes |
| 1797 – Citizens of Verona, Italy, began an unsuccessful eight-day rebellion against the French occupying forces. | refimprove section, empty sections |
| 1797 – French Revolutionary Wars: British Lieutenant General Ralph Abercromby and a force of over 6,000 men invaded Spanish-controlled Puerto Rico. | needs more footnotes |
| 1895 – The Empire of Japan and the Qing Empire of China signed the Treaty of Shimonoseki to end the First Sino-Japanese War. | needs more footnotes, refimprove section |
| 1912 – Soldiers of the Russian Empire's army fired upon striking gold miners in northeast Siberia near the Lena River, killing at least 150 people. | refimprove |
| 1937 – Daffy Duck made his debut in a short cartoon by the Warner Bros. Studio. | refimprove, needs copyediting |
| 1942 – World War II: Captured French General Henri Giraud escaped from German captivity in the Königstein Castle. | refimprove |
| 1969 – Czechoslovak Communist Party chairman Alexander Dubček was deposed. | refimprove section |
| 1982 – A new patriated Constitution of Canada, including the Canadian Charter of Rights and Freedoms, a bill of rights intended to protect certain political and civil rights of people in Canada, was signed into law by Elizabeth II, Queen of Canada. | many CN tags |
| 1986 – Having been at war for 335 years without a single shot having been fired and no casualties incurred, the Netherlands and the Isles of Scilly declared peace. | refimprove |
| 2013 – An ammonium nitrate explosion occurred at a fertilizer company facility in West, Texas, U.S., killing 15 people and injuring 160 others. | outdated |
Eligible
- 1961 – Armed Cuban exiles backed by the CIA invaded Cuba, landing in the Bay of Pigs, with the aim of overthrowing the Cuban government under Fidel Castro.
- 1969 – Sirhan Sirhan was convicted of the assassination of United States Senator Robert F. Kennedy.
- 1975 – The Khmer Rouge under Pol Pot captured Phnom Penh, ending the Cambodian Civil War, and established Democratic Kampuchea.
- 1984 – British police officer Yvonne Fletcher was shot and killed while on duty during a protest outside the Libyan embassy in London's St James's Square, resulting in an eleven-day police siege of the building and a breakdown of diplomatic relations between the two nations.
- 2014 – NASA announced the discovery of Kepler-186f, the first exoplanet with a radius similar to Earth's discovered in the habitable zone of another star.
- Born/died: Karen Blixen (b. 1885) · Sean Bean (b. 1959) · Elda Emma Anderson (d. 1961)
April 17: Evacuation Day in Syria (1946); Tax Day in the United States (2018)
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Kaunas Castle (reconstructed)
- 1080 – The death of Harald III allowed his brother Canute IV, who later became the first Dane to be canonized, to become King of Denmark.
- 1362 – Lithuanian Crusade: After a month-long siege, the Teutonic Order captured and destroyed Kaunas Castle (reconstruction pictured) in Lithuania.
- 1907 – The first of three dreadnought battleships for Brazil was laid down, sparking a vastly expensive South American naval arms race.
- 1951 – The Peak District was designated the first national park in the United Kingdom.
- 1973 – George Lucas began writing a 13-page film treatment entitled The Star Wars.
Marino Faliero (d. 1355) · Cap Anson (b. 1852) · Lucrețiu Pătrășcanu (d. 1954)