The temperature on April 3, 1920 was between 4.9 °C and 9.9 °C and averaged 7.2 °C. There was 1.2 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 10 » League of Nations Covenant enters into force. On January 16 the organization holds its first council meeting, in Paris.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
May 2 » The first game of the Negro National League baseball is played in Indianapolis.
May 3 » A Bolshevik coup fails in the Democratic Republic of Georgia.
November 2 » In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.
November 16 » Qantas, Australia's national airline, is founded as Queensland and Northern Territory Aerial Services Limited.
When copying data from this family tree, please include a reference to the origin: Erwin Maas, "Family tree Erwin Maas en verwanten", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-erwin-maas/I2145.php : accessed February 28, 2026), "Joos(t) (Jose(f,ph)(us) Judocus) Maria Herman (Heirman(s)) (1919-1920)".
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