January 30 » The first Anglo-Japanese Alliance is signed in London.
April 14 » James Cash Penney opens his first store in Kemmerer, Wyoming.
April 20 » Pierre and Marie Curie refine radium chloride.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
December 28 » The Syracuse Athletic Club defeated the New York Philadelphians, 5–0, in the first indoor professional football game, which was held at Madison Square Garden.
Day of marriage June 17, 1920
The temperature on June 17, 1920 was between 11.5 °C and 26.1 °C and averaged 19.2 °C. There was 13.2 hours of sunshine (79%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
May 16 » In Rome, Pope Benedict XV canonizes Joan of Arc.
July 12 » The Soviet–Lithuanian Peace Treaty is signed, by which Soviet Russia recognizes the independence of Lithuania.
August 26 » The 19th amendment to United States Constitution takes effect, giving women the right to vote.
October 10 » The Carinthian plebiscite determines that the larger part of the Duchy of Carinthia should remain part of Austria.
October 25 » After 74 days on hunger strike in Brixton Prison, England, the Sinn Féin Lord Mayor of Cork, Terence MacSwiney dies.
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/I169864.php : accessed October 7, 2026), "Tjimkje Ludema (1902-1956)".
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