The temperature on August 17, 1888 was about 14.3 °C. The air pressure was 4 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 77%. 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.
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
January 13 » The National Geographic Society is founded in Washington, D.C.
June 15 » Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire. Due to the death of his predecessors Wilhelm I and Frederick III, 1888 is the Year of the Three Emperors.
September 4 » George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.
September 8 » In London, the body of Jack the Ripper's second murder victim, Annie Chapman, is found.
September 8 » Isaac Peral's submarine is first tested.
December 22 » The Christmas Meeting of 1888, considered to be the official start of the Faroese independence movement.
Day of marriage August 13, 1947
The temperature on August 13, 1947 was between 13.0 °C and 25.9 °C and averaged 19.2 °C. There was 11.5 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 31 » Ferenc Nagy, the democratically elected Prime Minister of Hungary, resigns from office after blackmail from the Hungarian Communist Party accusing him of being part of a plot against the state. This grants the Communists effective control of the Hungarian government.
June 24 » Kenneth Arnold makes the first widely reported UFO sighting near Mount Rainier, Washington, leading to the coining of the phrase "flying saucer".
July 6 » The AK-47 goes into production in the Soviet Union.
September 9 » First case of a computer bug being found: A moth lodges in a relay of a Harvard Mark II computer at Harvard University.
October 14 » Chuck Yeager becomes the first person to exceed the speed of sound.
November 20 » The Princess Elizabeth marries Lieutenant Philip Mountbatten, who becomes the Duke of Edinburgh, at Westminster Abbey in London.
Day of death September 21, 1968
The temperature on September 21, 1968 was between 11.8 °C and 18.0 °C and averaged 14.7 °C. There was 7.7 hours of sunshine (62%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 30 » Vietnam War: Tet Offensive launch by forces of the Viet Cong and North Vietnamese Army against South Vietnam, the United States, and their allies.
March 18 » Gold standard: The U.S. Congress repeals the requirement for a gold reserve to back US currency.
April 4 » Apollo program: NASA launches Apollo 6.
July 8 » The Chrysler wildcat strike begins in Detroit, Michigan.
December 11 » The Rolling Stones Rock and Roll Circus, featuring the Rolling Stones, Jethro Tull, the Who, Taj Mahal, Marianne Faithfull, and the Dirty Mac with Yoko Ono, is filmed in Wembley, London.
December 31 » The first flight of the Tupolev Tu-144, the first civilian supersonic transport in the world.
When copying data from this family tree, please include a reference to the origin: Jos Smits, "Family tree Smits, van Leeuwenkamp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-smits-van-leeuwenkamp/R81.php : accessed May 10, 2025), "Johannes van Leeuwenkamp (1888-1968)".
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