January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
April 29 » A landslide kills 70 people in Frank, in the District of Alberta, Canada.
June 16 » Roald Amundsen leaves Oslo, Norway, to commence the first east–west navigation of the Northwest Passage.
September 27 » The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.
October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
Day of marriage May 19, 1928
The temperature on May 19, 1928 was between 3.4 °C and 14.6 °C and averaged 9.0 °C. There was 4.5 mm of rain. There was 8.1 hours of sunshine (51%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 1 » Boris Bazhanov defects through Iran. He is the only assistant of Joseph Stalin's secretariat to have defected from the Eastern Bloc.
April 12 » The Bremen, a German Junkers W 33 type aircraft, takes off for the first successful transatlantic aeroplane flight from east to west.
April 14 » The Bremen, a German Junkers W 33 type aircraft, reaches Greenly Island, Canada - the first successful transatlantic aeroplane flight from east to west.
May 15 » Walt Disney character Mickey Mouse premieres in his first cartoon, "Plane Crazy".
June 9 » Charles Kingsford Smith completes the first trans-Pacific flight in a Fokker Trimotor monoplane, the Southern Cross.
June 18 » Aviator Amelia Earhart becomes the first woman to fly in an aircraft across the Atlantic Ocean (she is a passenger; Wilmer Stultz is the pilot and Lou Gordon the mechanic).
Day of death July 9, 1946
The temperature on July 9, 1946 was between 6.8 °C and 22.3 °C and averaged 15.7 °C. There was 6.6 hours of sunshine (40%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
January 24 » The United Nations General Assembly passes its first resolution to establish the United Nations Atomic Energy Commission.
January 31 » Cold War: Yugoslavia's new constitution, modeling that of the Soviet Union, establishes six constituent republics (Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia and Slovenia).
April 8 » Électricité de France, the world's largest utility company, is formed as a result of the nationalisation of a number of electricity producers, transporters and distributors.
August 16 » Mass riots in Kolkata begin; more than 4,000 people would be killed in 72 hours.
December 7 » A fire at the Winecoff Hotel in Atlanta, Georgia kills 119 people, the deadliest hotel fire in U.S. history.
December 25 » The first European self-sustaining nuclear chain reaction is initiated within the Soviet Union's F-1 nuclear reactor.
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/I75065.php : accessed February 20, 2026), "Koenraad van der Horn (1903-1946)".
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