The temperature on July 12, 1893 was about 17.4 °C. There was 4 mm of rain. The airpressure was 75 cm mercury. The atmospheric humidity was 94%. Source: KNMI
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
January 13 » The Independent Labour Party of the United Kingdom holds its first meeting.
March 1 » Electrical engineer Nikola Tesla gives the first public demonstration of radio in St. Louis, Missouri.
April 1 » The rank of Chief Petty Officer in the United States Navy is established.
June 13 » Grover Cleveland notices a rough spot in his mouth and on July 1 undergoes secret, successful surgery to remove a large, cancerous portion of his jaw; the operation was not revealed to the public until 1917, nine years after the president's death.
September 28 » Foundation of the Portuguese football club FC Porto.
December 23 » The opera Hansel and Gretel by Engelbert Humperdinck is first performed.
Day of marriage July 24, 1919
The temperature on July 24, 1919 was between 7.9 °C and 17.8 °C and averaged 13.8 °C. There was 2.1 mm of rain. There was 4.0 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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.
April 13 » Jallianwala Bagh massacre: British Indian Army troops lead by Brigadier-General Reginald Dyer killed approx 379-1000 unarmed demonstrators including men and women in Amritsar, India; and approximately 1,500 injured.
May 8 » Edward George Honey proposes the idea of a moment of silence to commemorate the Armistice of 11 November 1918 which ended World War I.
May 27 » The NC-4 aircraft arrives in Lisbon after completing the first transatlantic flight.
November 7 » The first Palmer Raid is conducted on the second anniversary of the Russian Revolution. Over 10,000 suspected communists and anarchists are arrested in 23 U.S. cities.
December 3 » After nearly 20 years of planning and construction, including two collapses causing 89 deaths, the Quebec Bridge opens to traffic.
December 26 » Babe Ruth of the Boston Red Sox is sold to the New York Yankees by owner Harry Frazee, allegedly establishing the Curse of the Bambino superstition.
Day of death February 6, 1954
The temperature on February 6, 1954 was between -10.2 °C and 0.1 °C and averaged -6.2 °C. There was 5.6 hours of sunshine (60%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
January 7 » Georgetown-IBM experiment: The first public demonstration of a machine translation system is held in New York at the head office of IBM.
March 19 » Willie Mosconi sets a world record by running 526 consecutive balls without a miss during a straight pool exhibition at East High Billiard Club in Springfield, Ohio, setting a record that remains unbroken.
August 15 » Alfredo Stroessner begins his dictatorship in Paraguay.
August 23 » First flight of the Lockheed C-130 multi-role aircraft.
September 3 » The People's Liberation Army begins shelling the Republic of China-controlled islands of Quemoy, starting the First Taiwan Strait Crisis.
December 2 » Cold War: The United States Senate votes 65 to 22 to censure Joseph McCarthy for "conduct that tends to bring the Senate into dishonor and disrepute".
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/I287751.php : accessed February 5, 2026), "Harm Roelof Koster (1893-1954)".
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