The temperature on August 24, 1889 was about 15.3 °C. There was 2 mm of rain. The air pressure was 4 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 82%. Source: KNMI
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
June 3 » The first long-distance electric power transmission line in the United States is completed, running 14 miles (23km) between a generator at Willamette Falls and downtown Portland, Oregon.
September 23 » Nintendo Koppai (Later Nintendo Company, Limited) is founded by Fusajiro Yamauchi to produce and market the playing card game Hanafuda.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of marriage March 23, 1938
The temperature on March 23, 1938 was between 4.6 °C and 15.9 °C and averaged 9.2 °C. There was 7.4 hours of sunshine (60%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
April 25 » U.S. Supreme Court delivers its opinion in Erie Railroad Co. v. Tompkins and overturns a century of federal common law.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
August 18 » The Thousand Islands Bridge, connecting New York, United States with Ontario, Canada over the Saint Lawrence River, is dedicated by U.S. President Franklin D. Roosevelt.
October 5 » In Nazi Germany, Jews' passports are invalidated.
December 13 » The Holocaust: The Neuengamme concentration camp opens in the Bergedorf district of Hamburg, Germany.
Day of death June 20, 1975
The temperature on June 20, 1975 was between 8.6 °C and 24.1 °C and averaged 17.3 °C. There was -0.1 mm of rain. There was 10.3 hours of sunshine (61%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 2 » The Federal Rules of Evidence are approved by the United States Congress.
April 2 » Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops.
June 24 » Eastern Air Lines Flight 66 encounters severe wind shear and crashes on final approach to New York's JFK Airport killing 113 of the 124 passengers on board, making it the deadliest U.S. plane crash at the time. This accident led to decades of research into downburst and microburst phenomena and their effects on aircraft.
July 17 » Apollo–Soyuz Test Project: An American Apollo and a Soviet Soyuz spacecraft dock with each other in orbit marking the first such link-up between spacecraft from the two nations.
September 22 » Sara Jane Moore tries to assassinate U.S. President Gerald Ford, but is foiled by the Secret Service.
September 28 » The Spaghetti House siege, in which nine people are taken hostage, takes place in London.
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/I986.php : accessed February 7, 2026), "Jentje Boesenkool (1889-1975)".
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