May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
October 1 » The Vienna University of Economics and Business Administration is founded under the name k.u.k. Exportakademie.
October 6 » Phi Mu Alpha Sinfonia, the largest American music fraternity, is founded at the New England Conservatory of Music.
October 18 » The United States takes possession of Puerto Rico from Spain.
Day of marriage September 14, 1920
The temperature on September 14, 1920 was between 6.8 °C and 19.9 °C and averaged 13.7 °C. There was 9.0 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
March 12 » The Kapp Putsch begins when the Marinebrigade Ehrhardt is ordered to march on Berlin.
June 15 » Following the 1920 Schleswig plebiscites, Northern Schleswig is transferred from Germany to Denmark.
August 10 » World War I: Ottoman sultan Mehmed VI's representatives sign the Treaty of Sèvres that divides up the Ottoman Empire between the Allies.
August 19 » The Tambov Rebellion breaks out, in response to the Bolshevik policy of Prodrazvyorstka.
September 17 » The National Football League is organized as the American Professional Football Association in Canton, Ohio.
October 14 » Finland and Soviet Russia sign the Treaty of Tartu, exchanging some territories.
Day of death December 19, 1960
The temperature on December 19, 1960 was between -1.9 °C and 5.8 °C and averaged 2.3 °C. There was 1.1 mm of rain during 5.2 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 29 » The 5.7Mw Agadir earthquake shakes coastal Morocco with a maximum perceived intensity of X (Extreme), destroying Agadir, and leaving 12,000 dead and another 12,000 injured.
April 21 » Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
May 11 » Adolf Eichmann is captured by the Mossad in Argentina.
September 14 » The Organization of Petroleum Exporting Countries (OPEC) is founded.
November 3 » The land that would become the Great Swamp National Wildlife Refuge was established by an Act of Congress after a year-long legal battle that pitted local residents against Port Authority of New York and New Jersey officials wishing to turn the Great Swamp into a major regional airport for jet aircraft.
December 17 » Troops loyal to Emperor Haile Selassie in Ethiopia crush the coup that began December 13, returning power to their leader upon his return from Brazil. Haile Selassie absolves his son of any guilt.
When copying data from this family tree, please include a reference to the origin: Ted Olde Scheper, "Family tree Olde Scheper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-olde-scheper/I194.php : accessed January 22, 2026), "Siena Berendina Meijer (1898-1960)".
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