June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
July 7 » US President William McKinley signs the Newlands Resolution annexing Hawaii as a territory of the United States.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
September 18 » The Fashoda Incident triggers the last war scare between Britain and France.
October 1 » The Vienna University of Economics and Business Administration is founded under the name k.u.k. Exportakademie.
Day of death April 20, 1988
The temperature on April 20, 1988 was between 8.8 °C and 15.2 °C and averaged 12.4 °C. There was 0.7 mm of rain during 1.8 hours. There was 2.6 hours of sunshine (18%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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 14 » The USSSamuel B. Roberts strikes a mine in the Persian Gulf during Operation Earnest Will.
May 6 » All thirty-six passengers and crew were killed when Widerøe Flight 710 crashed into Mt. Torghatten in Brønnøy.
May 16 » A report by the Surgeon General of the United States C. Everett Koop states that the addictive properties of nicotine are similar to those of heroin and cocaine.
September 7 » Abdul Ahad Mohmand, the first Afghan in space, returns to Earth after nine days on the Mir space station.
September 27 » The National League for Democracy is formed by Aung San Suu Kyi and others to fight dictatorship in Myanmar.
December 1 » World AIDS Day was proclaimed worldwide by the UN member states.
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/I5025.php : accessed February 3, 2026), "Estella Purrenhage (1898-1988)".
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