The temperature on December 20, 1909 was between -0.8 °C and 3.3 °C and averaged 1.2 °C. There was 2.0 mm of rain. There was 3.3 hours of sunshine (43%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
March 4 » U.S. President William Taft used what became known as a Saxbe fix, a mechanism to avoid the restriction of the U.S. Constitution's Ineligibility Clause, to appoint Philander C. Knox as U.S. Secretary of State.
April 13 » The military of the Ottoman Empire reverses the Ottoman countercoup of 1909 to force the overthrow of Sultan Abdul Hamid II.
August 19 » The first automobile race at the Indianapolis Motor Speedway.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
Day of marriage December 31, 1938
The temperature on December 31, 1938 was between 0.1 °C and 4.2 °C and averaged 2.3 °C. There was 2.0 mm of rain during 0.8 hours. There was 2.9 hours of sunshine (37%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
September 21 » The Great Hurricane of 1938 makes landfall on Long Island in New York. The death toll is estimated at 500–700 people.
October 5 » In Nazi Germany, Jews' passports are invalidated.
November 1 » Seabiscuit defeats War Admiral in an upset victory during a match race deemed "the match of the century" in horse racing.
December 13 » The Holocaust: The Neuengamme concentration camp opens in the Bergedorf district of Hamburg, Germany.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I72084.php : accessed May 7, 2025), "Hendrikus Theodorus Zijlmans (1909-)".
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