The temperature on July 26, 1884 was about 17.3 °C. The air pressure was 1 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 61%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
March 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 1 » Moses Fleetwood Walker becomes the first black person to play in a professional baseball game in the United States.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
July 5 » Germany takes possession of Cameroon.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
Day of death April 5, 1947
The temperature on April 5, 1947 was between -0.6 °C and 8.8 °C and averaged 5.4 °C. There was 1.8 mm of rain during 1.6 hours. There was 5.7 hours of sunshine (43%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 18 » First Indochina War: The French gain complete control of Hanoi after forcing the Viet Minh to withdraw to mountains.
March 12 » Cold War: The Truman Doctrine is proclaimed to help stem the spread of Communism.
June 24 » Kenneth Arnold makes the first widely reported UFO sighting near Mount Rainier, Washington, leading to the coining of the phrase "flying saucer".
August 17 » The Radcliffe Line, the border between the Dominions of India and Pakistan, is revealed.
November 30 » Civil War in Mandatory Palestine begins, leading up to the creation of the state of Israel.
December 16 » William Shockley, John Bardeen and Walter Brattain build the first practical point-contact transistor.
When copying data from this family tree, please include a reference to the origin: Roelf Schrik, "Family tree Leemborg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-leemborg/I2279.php : accessed February 18, 2026), "Tiemen Teunis Cornelis de Valk (1884-1947)".
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