March 1 » Henri Becquerel discovers radioactive decay.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
May 26 » Nicholas II becomes the last Tsar of Imperial Russia.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
August 27 » Anglo-Zanzibar War: The shortest war in world history (09:02 to 09:40), between the United Kingdom and Zanzibar.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
Day of death June 30, 1956
The temperature on June 30, 1956 was between 13.0 °C and 21.0 °C and averaged 16.7 °C. There was 8.2 hours of sunshine (49%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 1 » The International Air Transport Association finalizes a draft of the Radiotelephony spelling alphabet for the International Civil Aviation Organization.
March 23 » Pakistan becomes the first Islamic republic in the world. This date is now celebrated as Republic Day in Pakistan.
June 29 » The Federal Aid Highway Act of 1956 is signed by U.S. President Dwight D. Eisenhower, officially creating the United States Interstate Highway System.
September 16 » TCN-9 Sydney is the first Australian television station to commence regular broadcasts.
October 17 » The first commercial nuclear power station is officially opened by Queen Elizabeth II in Sellafield, England.
December 12 » United Nations Security Council Resolution 121 relating to acceptance of Japan to United Nations is adopted.
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/I70242.php : accessed February 12, 2026), "Willem Hartman (1896-1956)".
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