January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
February 9 » The Davis Cup competition is established.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
May 26 » Thousand Days' War: The Colombian Conservative Party turns the tide of war in their favor with victory against the Colombian Liberal Party in the Battle of Palonegro.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
Day of marriage April 11, 1923
The temperature on April 11, 1923 was between 2.5 °C and 19.9 °C and averaged 11.9 °C. There was 10.4 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
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.
January 11 » Occupation of the Ruhr: Troops from France and Belgium occupy the Ruhr area to force Germany to make its World War I reparation payments.
March 20 » The Arts Club of Chicago hosts the opening of Pablo Picasso's first United States showing, entitled Original Drawings by Pablo Picasso, becoming an early proponent of modern art in the United States.
April 28 » Wembley Stadium is opened, named initially as the Empire Stadium.
June 9 » Bulgaria's military takes over the government in a coup.
August 18 » First British Track and Field championships for women, London.
September 26 » The German government accepts the occupation of the Ruhr.
Day of death June 22, 1980
The temperature on June 22, 1980 was between 9.4 °C and 17.3 °C and averaged 11.8 °C. There was 21.3 mm of rain during 2.6 hours. There was 3.8 hours of sunshine (23%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 25 » The government of Suriname is overthrown by a military coup led by Dési Bouterse.
May 14 » Salvadoran Civil War: the Sumpul River massacre occurs in Chalatenango, El Salvador.
July 1 » "O Canada" officially becomes the national anthem of Canada.
August 26 » After John Birges plants a bomb at Harvey's Resort Hotel in Stateline, Nevada, in the United States, the FBI inadvertently detonates the bomb during its disarming.
December 1 » Ecatepec, State of Mexico, Mexico, becomes a city.
December 8 » Former Beatle John Lennon is murdered in front of The Dakota in New York City.
When copying data from this family tree, please include a reference to the origin: Christophe, "Arbre Chatelain", database, Genealogy Online (https://www.genealogieonline.nl/arbre-chatelain/I4798.php : accessed October 19, 2026), "Ernest Léon Henri CHATELAIN (1900-1980)".
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