21st of June
June 21 is the 172nd day of the year of the Gregorian calendar, 173rd when it is a leap year, then there are 193 left.
Its equivalent was 3 Messidor of the French Republican/Revolutionary calendar, officially referred to as Onion Day.
It is above all the most frequent date for the summer solstice in the terrestrial northern hemisphere, that of winter in the southern hemisphere, and thus the respective beginning of summer or winter in each of these two hemispheres (more frequent than June 19, 20 and 22, nevertheless possible on long terms).
June 20 - June 21 - June 22
3rd century BC.
-217: The Roman consul Flaminius Nepos is severely beaten by the Carthaginian Hannibal Barca during the Battle of Lake Trasimene in Umbrian central Italy.
1307: beginning of the reign of Qaichan, under the name of Külüg Khan.
1529: Victory of Charles V over François I at the Battle of Landriano.
1582: Honnō-ji incident.
1615: Treaty of Asti, peace between Spain and the Duchy of Savoy, concerning the succession of the Marquisate of Montferrat.
1621: the execution of Czech Protestant leaders marks the end of the Bohemian period of the Thirty Years' War.
1734: Marie-Josèphe-Angélique is executed in Montreal, accused of having caused the fire in the city.
1749: Edward Cornwallis founds Halifax.
1788: New Hampshire ratifies the United States Constitution.
1791: arrest of Louis XVI in Varennes.
1798: Victory of British troops against the Irish rebellion at the Battle of Vinegar Hill.
1813: Battle of Vitoria.
1815: Battle of Auray, during the Chouannerie of 1815.
1898: Capture of Guam by American forces during the Spanish-American War.
1900: Chinese Empress Cixi declares war on the Eight Nations during the Boxer Rebellion.
1919: scuttling of the German fleet at Scapa Flow.
1942: takeover of Tobruk by the Deutsches Afrikakorps.
1943: arrest of Jean Moulin.
1964: Freedom Summer murders, targeting three members of the civil rights movement.
1981: victory of the Socialist Party in the French legislative elections.
1989: The United States Supreme Court hands down Texas v. Johnson, authorizing contempt of the flag, under the First Amendment to the Constitution.
1998: the Israeli government endorses Binyamin Netanyahu's Greater Jerusalem plan.
2009: Greenland gains increased autonomy.
2017: in France, following legislative elections which gave an absolute majority to La République en Marche, Édouard Philippe constitutes the second government of the presidency of Emmanuel Macron.
2020: legislative elections are held in Serbia to renew the country's 250 Assembly seats. These elections initially scheduled for April 26, 2020 were postponed due to the health crisis affecting the territory and almost the whole world, they were won by a coalition led by the Serbian Progressive Party of the President of the government Ana Brnabić. Provincial elections in Vojvodina and municipal elections are held simultaneously.
Arts, culture and religion
1481: papal bull Æterni regis enacted by Pope Sixtus IV.
1890: creation of the symphonic and burlesque poem in D minor Mort et Transfiguration op. 24 by Richard Strauss in Eisenach.
1948: first long play 33 rpm vinyl record pressed by the "Columbia" company in New York.
1955: Dick Bruna creates the fictional character Miffy.
1963: election of Pope Paul VI whose real name is Giovanni Battista Montini.
Science and technology
2004: SpaceShipOne becomes the first aircraft to perform a private flight in space.
2006: Astronomy Union