June 22 » Spanish–American War: In a chaotic operation, 6,000 men of the U.S. Fifth Army Corps begins landing at Daiquirí, Cuba, about 16 miles (26km) east of Santiago de Cuba. Lt. Gen. Arsenio Linares y Pombo of the Spanish Army outnumbers them two-to-one, but does not oppose the landings.
July 1 » Spanish–American War: The Battle of San Juan Hill is fought in Santiago de Cuba, Cuba.
July 4 » En route from New York to Le Havre, the SS La Bourgogne collides with another ship and sinks off the coast of Sable Island, with the loss of 549 lives.
July 7 » US President William McKinley signs the Newlands Resolution annexing Hawaii as a territory of the United States.
September 13 » Hannibal Goodwin patents celluloid photographic film.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of marriage December 15, 1921
The temperature on December 15, 1921 was between 0.1 °C and 3.2 °C and averaged 1.7 °C. 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.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
March 17 » The Second Polish Republic adopts the March Constitution.
May 3 » The Government of Ireland Act 1920 is passed, dividing Ireland into Northern Ireland and Southern Ireland.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
Day of death September 20, 1963
The temperature on September 20, 1963 was between 11.2 °C and 17.8 °C and averaged 14.8 °C. The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 29 » The first inductees into the Pro Football Hall of Fame are announced.
March 17 » Mount Agung erupted on Bali killing more than 1,100 people.
May 2 » Berthold Seliger launches a rocket with three stages and a maximum flight altitude of more than 100 kilometres near Cuxhaven. It is the only sounding rocket developed in Germany.
July 1 » ZIP codes are introduced for United States mail.
November 23 » The BBC broadcasts An Unearthly Child (starring William Hartnell), the first episode of the first story from the first series of Doctor Who, which is now the world's longest running science fiction drama.
November 24 » Lee Harvey Oswald, the assassin of President John F. Kennedy, is killed by Jack Ruby.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I5827.php : accessed February 6, 2026), "Leona Edna Gompf (1898-1963)".
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