January 6 » Second Boer War: Having already besieged the fortress at Ladysmith, Boer forces attack it, but are driven back by British defenders.
February 18 » Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
August 3 » The Firestone Tire and Rubber Company is founded.
October 19 » Max Planck discovers Planck's law of black-body radiation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage August 21, 1924
The temperature on August 21, 1924 was between 6.8 °C and 17.7 °C and averaged 12.0 °C. There was 5.8 mm of rain. There was 5.3 hours of sunshine (37%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. 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 22 » Ramsay MacDonald becomes the first Labour Prime Minister of the United Kingdom.
February 1 » Russia–United Kingdom relations are restored, over six years after the Communist revolution.
April 15 » Rand McNally publishes its first road atlas.
September 9 » Hanapepe massacre occurs on Kauai, Hawaii.
September 28 » The first aerial circumnavigation is completed by a team from the US Army.
November 23 » Edwin Hubble's discovery, that the Andromeda "nebula" is actually another island galaxy far outside of our own Milky Way, is first published in The New York Times.
Day of death May 3, 1964
The temperature on May 3, 1964 was between 9.4 °C and 14.4 °C and averaged 12.0 °C. There was 8.4 mm of rain during 6.0 hours. There was 0.9 hours of sunshine (6%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 1 » The Federation of Rhodesia and Nyasaland is divided into the independent republics of Zambia and Malawi, and the British-controlled Rhodesia.
May 9 » Ngô Đình Cẩn, de facto ruler of central Vietnam under his brother President Ngô Đình Diệm before the family's toppling, is executed.
June 1 » Kenya becomes a republic with Jomo Kenyatta (1897 – 22 August 1978) as its first President (1964 to 1978).
August 1 » The former Belgian Congo is renamed the Democratic Republic of the Congo.
August 5 » Vietnam War: Operation Pierce Arrow: American aircraft from carriers USSTiconderoga and USSConstellation bomb North Vietnam in retaliation for strikes against U.S. destroyers in the Gulf of Tonkin.
October 10 » The Tokyo Summer Olympics opening ceremony is the first to be relayed live by satellites.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I474155.php : accessed February 15, 2026), "Willemtje Doedens (1900-1964)".
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