January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
February 9 » The Davis Cup competition is established.
February 27 » Fußball-Club Bayern München is founded.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
June 9 » Indian nationalist Birsa Munda dies of cholera in a British prison.
Day of death December 3, 1979
The temperature on December 3, 1979 was between 9.3 °C and 12.5 °C and averaged 11.4 °C. There was -0.1 mm of rain. There was 1.2 hours of sunshine (15%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 26 » The Superliner railcar enters revenue service with Amtrak.
March 5 » Soviet probes Venera 11, Venera 12 and the German-American solar satellite Helios II all are hit by "off the scale" gamma rays leading to the discovery of soft gamma repeaters.
July 1 » Sony introduces the Walkman.
October 14 » The first National March on Washington for Lesbian and Gay Rights draws approximately 100,000 people.
December 9 » The eradication of the smallpox virus is certified, making smallpox the first of only two diseases that have been driven to extinction (rinderpest in 2011 being the other).
December 23 » Soviet–Afghan War: Soviet Union forces occupy Kabul, the Afghan capital.
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/I170233.php : accessed December 27, 2025), "Wiebe Slager (1900-1979)".
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