Wikipedia:Selected anniversaries/April 17

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This is a list of selected April 17 anniversaries that appears on 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. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.

Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only 5–6 events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled April 17, 2020 featured article or the April 17, 2020 featured picture.

To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.

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Blurb Reason
World Hemophilia Day 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
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
1937Daffy Duck made his debut in a short cartoon by the Warner Bros. Studio. refimprove
1942World War II: Captured French general Henri Giraud escaped from German captivity in the Königstein Castle. many CN tags
1969Czechoslovak 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. 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
Eliza Acton (b. 1799) TFA for 2019


April 17: Evacuation Day in Syria (1946)

Artist's impression of Kepler-186f
Artist's impression of Kepler-186f

Hannah Webster Foster (d. 1840) · Neville McNamara (b. 1923) · Sean Bean (b. 1959)

More anniversaries: