Wikipedia:Selected anniversaries/June 23
This is a list of selected June 23 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 June 23, 2017 featured article or the June 23, 2017 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.
Use only ONE image at a time
|Jaaniõhtu in Estonia||refimprove|
|Saint Jonas' Festival in Lithuania;||tagged as stub|
|1713 – After Queen Anne's War, French residents of Acadia were given one year to declare allegiance to Britain or leave Nova Scotia.||date not cited|
|1926 – The College Board administered the first SAT, a major standardized test for university and college admissions in the United States.||primary sources|
|1961 – The Antarctic Treaty, which sets aside Antarctica as a scientific preserve and bans military activity on the continent, came into force.||already featured on December 1|
|1972 – More than forty countries left the sterling area, allowing their currencies to float independently of the British Pound.||refimprove, need to verify date|
|1972 – Title IX of the United States Civil Rights Act of 1964 was amended to prohibit gender discrimination in any educational program receiving federal funds, which allowed for huge growth in women's sports for student athletes.||neutrality issues|
|1982 – Chinese American Vincent Chin died after being beaten into a coma in Highland Park, Michigan, US, by two automotive workers who had mistaken him for Japanese and who were angry about the success of Japanese auto companies.||blacklisted URLs|
- 1280 – Reconquista: Troops of the Emirate of Granada defeated those of the Kingdom of Castile and the Kingdom of León in the Battle of Moclín.
- 1757 – Seven Years' War: British forces under Robert Clive defeated troops under Siraj ud-Daulah at the Battle of Plassey, allowing the British East India Company to annex Bengal.
- 1858 – Edgardo Mortara, a six-year-old Jewish boy, was seized by papal authorities and taken to be raised as a Roman Catholic, sparking an international controversy.
- 1865 – Stand Watie became the last Confederate general to surrender in the American Civil War.
- 1887 – The Parliament of Canada passed the Rocky Mountains Park Act, creating Banff National Park as the country's first national park.
- 1919 – Estonian War of Independence: Estonian troops engaged the forces of the Pro-German Government of Latvia near Cēsis, Latvia, recapturing the area four days later.
- 1985 – A bomb attributed to the Sikh separatist group Babbar Khalsa destroyed Air India Flight 182 above the Atlantic Ocean, killing all 329 on board.
- 2016: The United Kingdom decided to leave the European Union in a referendum.
- 1780 – American Revolutionary War: The Continental Army victory in the Battle of Springfield effectively put an end to British ambitions in New Jersey.
- 1894 – Led by French historian Pierre de Coubertin, an international congress at the Sorbonne in Paris founded the International Olympic Committee to reinstate the ancient Olympic Games.
- 1946 – Canada's largest onshore earthquake, measuring 7.3 Mw, struck Vancouver Island.
- 1956 – Gamal Abdel Nasser (pictured) became President of Egypt, a post he held until his death in 1970.
- 1991 – The first installment of the Sonic the Hedgehog video game series was first released, transforming Sega into a leading game company.