February 9 » The Davis Cup competition is established.
March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death May 30, 1986
The temperature on May 30, 1986 was between 4.3 °C and 15.1 °C and averaged 9.8 °C. There was -0.1 mm of rain. There was 8.6 hours of sunshine (53%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
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.
February 16 » The Soviet liner MSMikhail Lermontov runs aground in the Marlborough Sounds, New Zealand.
April 28 » High levels of radiation resulting from the Chernobyl disaster are detected at a nuclear power plant in Sweden, leading Soviet authorities to publicly announce the accident.
April 29 » Chernobyl disaster: American and European spy satellites capture the ruins of the 4th Reactor at the Chernobyl Power Plant.
August 6 » A low-pressure system that redeveloped off the New South Wales coast dumps a record 328 millimeters (13inches) of rain in a day on Sydney, New South Wales, Australia.
October 3 » TASCC, a superconducting cyclotron at the Chalk River Laboratories in Canada, is officially opened.
November 3 » The Compact of Free Association becomes law, granting the Federated States of Micronesia and the Marshall Islands independence from the United States.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I174112.php : accessed December 31, 2025), "Gertrude Bouwkamp (1900-1986)".
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