The temperature on June 9, 1927 was between 3.6 °C and 16.4 °C and averaged 11.2 °C. There was 0.3 mm of rain. There was 10.7 hours of sunshine (64%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
May 18 » After being founded for 20 years, the Government of the Republic of China approves Tongji University to be among the first national universities of the Republic of China.
August 27 » Five Canadian women file a petition to the Supreme Court of Canada, asking, "Does the word 'Persons' in Section 24 of the British North America Act, 1867, include female persons?"
September 22 » Jack Dempsey loses the "Long Count" boxing match to Gene Tunney.
October 4 » Gutzon Borglum begins sculpting Mount Rushmore.
November 12 » Leon Trotsky is expelled from the Soviet Communist Party, leaving Joseph Stalin in undisputed control of the Soviet Union.
December 8 » The Brookings Institution, one of the United States' oldest think tanks, is founded through the merger of three organizations that had been created by philanthropist Robert S. Brookings.
Day of marriage September 15, 1955
The temperature on September 15, 1955 was between 8.9 °C and 16.7 °C and averaged 11.7 °C. There was 2.2 mm of rain during 1.4 hours. There was 2.2 hours of sunshine (17%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
June 11 » Eighty-three spectators are killed and at least 100 are injured after an Austin-Healey and a Mercedes-Benz collide at the 24 Hours of Le Mans, the deadliest ever accident in motorsports.
July 17 » Disneyland is dedicated and opened by Walt Disney in Anaheim, California.
August 28 » Black teenager Emmett Till is brutally murdered in Mississippi, galvanizing the nascent civil rights movement.
September 20 » The Treaty on Relations between the USSR and the GDR is signed.
November 19 » National Review publishes its first issue.
December 1 » American Civil Rights Movement: In Montgomery, Alabama, seamstress Rosa Parks refuses to give up her bus seat to a white man and is arrested for violating the city's racial segregation laws, an incident which leads to that city's bus boycott.
Day of death March 10, 2018
The temperature on March 10, 2018 was between 7.1 °C and 15.1 °C and averaged 11.4 °C. There was 4.3 mm of rain during 6.6 hours. There was 1.8 hours of sunshine (16%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I3322.php : accessed March 13, 2026), "Hendrik den Hartigh (1927-2018)".
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