The temperature on June 28, 1912 was between 11.2 °C and 24.7 °C and averaged 18.1 °C. There was 11.3 hours of sunshine (68%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
April 2 » The ill-fated RMSTitanic begins sea trials.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 18 » First Balkan War: King Peter I of Serbia issues a declaration "To the Serbian People", as his country joins the war.
October 24 » First Balkan War: The Battle of Kirk Kilisse concludes with a Bulgarian victory against the Ottoman Empire.
Day of marriage June 2, 1938
The temperature on June 2, 1938 was between 7.8 °C and 18.0 °C and averaged 12.7 °C. There was 0.1 mm of rain. There was 7.7 hours of sunshine (47%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
September 30 » Britain, France, Germany and Italy sign the Munich Agreement, whereby Germany annexes the Sudetenland region of Czechoslovakia.
November 1 » Seabiscuit defeats War Admiral in an upset victory during a match race deemed "the match of the century" in horse racing.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
Day of death March 5, 1975
The temperature on March 5, 1975 was between 4.9 °C and 11.8 °C and averaged 7.5 °C. There was 1.6 mm of rain during 2.7 hours. There was 1.8 hours of sunshine (16%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
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/I117968.php : accessed October 25, 2026), "Siebe Hamstra (1912-1975)".
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