January 31 » Czechoslav Trade Union Association is founded in Prague.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of death May 1, 1946
The temperature on May 1, 1946 was between 8.0 °C and 19.3 °C and averaged 13.8 °C. There was 11.2 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
February 15 » ENIAC, the first electronic general-purpose computer, is formally dedicated at the University of Pennsylvania in Philadelphia.
June 1 » Ion Antonescu, "Conducator" ("Leader") of Romania during World War II, is executed.
July 15 » State of North Borneo, today in Sabah, Malaysia, annexed by the United Kingdom.
August 1 » Leaders of the Russian Liberation Army, a force of Russian prisoners of war that collaborated with Nazi Germany, are executed in Moscow, Soviet Union for treason.
September 24 » The top-secret Clifford-Elsey Report on the Soviet Union is delivered to President Truman.
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: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I569806.php : accessed March 17, 2026), "Birger Sofus Ovesen (1897-1946)".
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