February 9 » The Davis Cup competition is established.
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
July 29 » In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci.
August 3 » The Firestone Tire and Rubber Company is founded.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage June 21, 1921
The temperature on June 21, 1921 was between 7.9 °C and 14.3 °C and averaged 10.7 °C. There was 1.2 mm of rain. There was 2.9 hours of sunshine (17%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. 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.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
May 8 » The creation of the Communist Party of Romania.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
November 14 » The Communist Party of Spain is founded, and issues the first edition of Mundo obrero.
Day of death September 23, 1966
The temperature on September 23, 1966 was between 5.0 °C and 15.8 °C and averaged 11.6 °C. There was 0.1 mm of rain. There was 2.7 hours of sunshine (22%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
March 31 » The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
July 8 » King Mwambutsa IV Bangiriceng of Burundi is deposed by his son Prince Charles Ndizi.
August 16 » Vietnam War: The House Un-American Activities Committee begins investigations of Americans who have aided the Viet Cong. The committee intends to introduce legislation making these activities illegal. Anti-war demonstrators disrupt the meeting and 50 people are arrested.
September 8 » The landmark American science fiction television series Star Trek premieres with its first-aired episode, "The Man Trap".
November 8 » U.S. President Lyndon B. Johnson signs into law an antitrust exemption allowing the National Football League to merge with the upstart American Football League.
November 13 » In response to Fatah raids against Israelis near the West Bank border, Israel launches an attack on the village of As-Samu.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I12226.php : accessed February 25, 2026), "Cornelis Johannes (Corrie) Dreyer (1900-1966)".
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