April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 20 » Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of marriage December 20, 1922
The temperature on December 20, 1922 was between 2.4 °C and 8.8 °C and averaged 5.4 °C. There was 5.6 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 9 » Brazil becomes a member of the Berne Convention copyright treaty.
April 7 » The United States Secretary of the Interior leases federal petroleum reserves to private oil companies on excessively generous terms.
July 20 » The League of Nations awards mandates of Togoland to France and Tanganyika to the United Kingdom.
September 11 » The Sun News-Pictorial is founded in Melbourne, Australia.
November 14 » The British Broadcasting Company begins radio service in the United Kingdom.
November 15 » At least 300 are massacred during a general strike in Guayaquil, Ecuador.
Day of death June 20, 1991
The temperature on June 20, 1991 was between 7.8 °C and 15.8 °C and averaged 12.0 °C. There was -0.1 mm of rain. There was 1.2 hours of sunshine (7%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 2 » Sharon Pratt Kelly becomes the first African American woman mayor of a major city and first woman Mayor of the District of Columbia.
January 5 » Somali Civil War: The United States Embassy to Somalia in Mogadishu is evacuated by helicopter airlift days after the outbreak of violence in Mogadishu.
April 26 » 55 tornadoes break out in the central United States. Before the outbreak's end, Andover, Kansas, would record the year's only F5 tornado.
August 25 » The Battle of Vukovar begins. An 87-day siege of Vukovar by the Yugoslav People's Army (JNA), supported by various Serb paramilitary forces, between August and November 1991 (during the Croatian War of Independence).
October 18 » The Supreme Council of Azerbaijan adopts a declaration of independence from the Soviet Union.
December 5 » Leonid Kravchuk is elected the first president of Ukraine.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I802.php : accessed December 29, 2025), "Hendrika Cornelia Jonker (1902-1991)".
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