The temperature on June 29, 1910 was between 10.6 °C and 18.3 °C and averaged 14.5 °C. There was 1.5 mm of rain. There was 9.5 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
June 19 » The first Father's Day is celebrated in Spokane, Washington.
June 25 » Igor Stravinsky's ballet The Firebird is premiered in Paris, bringing him to prominence as a composer.
July 24 » The Ottoman Empire captures the city of Shkodër, putting down the Albanian Revolt of 1910.
November 14 » Aviator Eugene Burton Ely performs the first takeoff from a ship in Hampton Roads, Virginia, taking off from a makeshift deck on the USS Birmingham in a Curtiss pusher.
December 21 » An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Day of marriage January 29, 1930
The temperature on January 29, 1930 was between 0.1 °C and 2.1 °C and averaged 1.3 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. 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.
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.
September 6 » Democratically elected Argentine president Hipólito Yrigoyen is deposed in a military coup.
September 17 » The Kurdish Ararat rebellion is suppressed by the Turks.
November 3 » Getúlio Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24.
When copying data from this family tree, please include a reference to the origin: Leo Koster, "Family tree Koster / Coster", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster-coster/I23331.php : accessed March 15, 2026), "Johanna Egberts (1910-)".
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