March 7 » Second Boer War: Boers, led by Koos de la Rey, inflict the biggest defeat upon the British since the beginning of the war, at Tweebosch.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
April 20 » Pierre and Marie Curie refine radium chloride.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death May 31, 1987
The temperature on May 31, 1987 was between 8.7 °C and 16.8 °C and averaged 13.3 °C. There was -0.1 mm of rain. There was 0.7 hours of sunshine (4%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
April 27 » The U.S. Department of Justice bars Austrian President Kurt Waldheim (and his wife, Elisabeth, who had also been a Nazi) from entering the US, charging that he had aided in the deportations and executions of thousands of Jews and others as a German Army officer during World War II.
May 17 » Iran–Iraq War: An Iraqi Dassault Mirage F1 fighter jet fires two missiles into the U.S. Navy warship USSStark, killing 37 and injuring 21 of her crew.
June 12 » The Central African Republic's former emperor Jean-Bédel Bokassa is sentenced to death for crimes he had committed during his 13-year rule.
August 4 » The Federal Communications Commission rescinds the Fairness Doctrine which had required radio and television stations to present controversial issues "fairly".
August 16 » Northwest Airlines Flight 255, a McDonnell Douglas MD-82, crashes after takeoff in Detroit, Michigan, killing 154 of the 155 on board, plus two people on the ground.
November 15 » In Brașov, Romania, workers rebel against the communist regime of Nicolae Ceaușescu.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I1217.php : accessed March 6, 2026), "Wilhelmus Hubertus Dionysius Knippenberg (1902-1987)".
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