January 1 » Nigeria becomes a British protectorate.
May 9 » Australia opens its first national parliament in Melbourne.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
November 13 » The 1901 Caister lifeboat disaster.
November 27 » The U.S. Army War College is established.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
Day of marriage June 20, 1920
The temperature on June 20, 1920 was between 9.7 °C and 24.9 °C and averaged 18.9 °C. There was 8.8 hours of sunshine (53%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
February 10 » About 75% of the population in Zone I votes to join Denmark in the 1920 Schleswig plebiscites.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
November 15 » First assembly of the League of Nations is held in Geneva, Switzerland.
November 28 » FIDAC (The Interallied Federation of War Veterans Organisations), the first international organization of war veterans is established in Paris, France
When copying data from this family tree, please include a reference to the origin: Joop Admiraal, "Database Admiraal", database, Genealogy Online (https://www.genealogieonline.nl/database-admiraal/I1766.php : accessed May 4, 2025), "Margaretha Verdooner (1901-)".
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