January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
June 16 » The Ford Motor Company is incorporated.
July 23 » The Ford Motor Company sells its first car.
October 1 » Baseball: The Boston Americans play the Pittsburgh Pirates in the first game of the modern World Series.
October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
Day of marriage December 21, 1928
The temperature on December 21, 1928 was between 0.3 °C and 2.3 °C and averaged 1.6 °C. There was 1.9 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
March 12 » In California, the St. Francis Dam fails; the resulting floods kill 431 people.
August 27 » The Kellogg–Briand Pact outlawing war is signed by fifteen nations. Ultimately sixty-one nations will sign it.
September 18 » Juan de la Cierva makes the first autogyro crossing of the English Channel.
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
November 15 » The RNLI lifeboat Mary Stanford capsized in Rye Harbour with the loss of the entire 17-man crew.
November 22 » The premier performance of Ravel's Boléro takes place in Paris.
Day of death March 28, 1976
The temperature on March 28, 1976 was between 4.0 °C and 10.3 °C and averaged 7.0 °C. There was 3.3 hours of sunshine (26%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 3 » The International Covenant on Economic, Social and Cultural Rights, adopted by the United Nations General Assembly, comes into force.
February 27 » The formerly Spanish territory of Western Sahara, under the auspices of the Polisario Front declares independence as the Sahrawi Arab Democratic Republic.
March 9 » Forty-two people die in the Cavalese cable car disaster, the worst cable-car accident to date.
July 21 » Christopher Ewart-Biggs, the British ambassador to the Republic of Ireland, is assassinated by the Provisional IRA.
September 3 » Viking program: The American Viking 2 spacecraft lands at Utopia Planitia on Mars.
September 19 » Turkish Airlines Flight 452 hits the Taurus Mountains, outskirt of Karatepe, Turkey, killing all 154 passengers and crew.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I2698.php : accessed January 23, 2026), "Woutera Elisa de Jong (1903-1976)".
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