The temperature on April 23, 1930 was between 1.9 °C and 20.0 °C and averaged 12.7 °C. There was 8.5 hours of sunshine (59%). The average windspeed was 4 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.
February 18 » Elm Farm Ollie becomes the first cow to fly in a fixed-wing aircraft and also the first cow to be milked in an aircraft.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
March 13 » The news of the discovery of Pluto is announced by Lowell Observatory.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
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.
When copying data from this family tree, please include a reference to the origin: Martin, Rolf, en Harry Verkaik en Maarten van Bruinessen, "Verkaik uit het Groene Hart", database, Genealogy Online (https://www.genealogieonline.nl/verkaik-uit-het-groene-hart/I16972.php : accessed April 28, 2024), "Marrigje de Jong (± 1905-)".
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