The temperature on September 16, 1909 was between 11.6 °C and 19.7 °C and averaged 14.4 °C. There was 3.7 hours of sunshine (29%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
February 12 » New Zealand's worst maritime disaster of the 20th century happens when the SSPenguin, an inter-island ferry, sinks and explodes at the entrance to Wellington Harbour.
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
April 13 » The military of the Ottoman Empire reverses the Ottoman countercoup of 1909 to force the overthrow of Sultan Abdul Hamid II.
August 19 » The first automobile race at the Indianapolis Motor Speedway.
August 28 » A group of mid-level Greek Army officers launches the Goudi coup, seeking wide-ranging reforms.
Day of marriage June 4, 1930
The temperature on June 4, 1930 was between 11.7 °C and 23.6 °C and averaged 17.4 °C. There was 12.8 hours of sunshine (78%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 3 » Communist Party of Vietnam is founded at a "Unification Conference" held in Kowloon, British Hong Kong.
March 29 » Heinrich Brüning is appointed German Reichskanzler.
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
August 16 » The first color sound cartoon, Fiddlesticks, is released by Ub Iwerks.
December 7 » W1XAV in Boston, Massachusetts telecasts video from the CBS radio orchestra program, The Fox Trappers. The telecast also includes the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show.
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/I133356.php : accessed October 18, 2026), "Lydia Anna Koolstra (1909-)".
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