The temperature on April 11, 1913 was between 0.7 °C and 5.6 °C and averaged 2.6 °C. There was 2.4 hours of sunshine (18%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 22 » Mystic Phan Xích Long, the self-proclaimed Emperor of Vietnam, was arrested for organising a revolt against the colonial rule of French Indochina, which was nevertheless carried out by his supporters the following day.
April 8 » The 17th Amendment to the United States Constitution, requiring direct election of Senators, becomes law.
May 30 » The Treaty of London is signed, ending the First Balkan War; Albania becomes an independent nation.
December 1 » Crete, having obtained self rule from Turkey after the First Balkan War, is annexed by Greece.
December 1 » Ford Motor Company introduces the first moving assembly line.
December 23 » The Federal Reserve Act is signed into law by President Woodrow Wilson, creating the Federal Reserve System.
Day of death April 21, 1946
The temperature on April 21, 1946 was between 1.2 °C and 12.7 °C and averaged 7.8 °C. There was 4.2 hours of sunshine (29%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. 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.
March 21 » The Los Angeles Rams sign Kenny Washington, making him the first African American player in professional American football since 1933.
April 18 » The International Court of Justice holds its inaugural meeting in The Hague, Netherlands.
April 29 » The International Military Tribunal for the Far East convenes and indicts former Prime Minister of Japan Hideki Tojo and 28 former Japanese leaders for war crimes.
July 4 » After 381 years of near-continuous colonial rule by various powers, the Philippines attains full independence from the United States.
August 7 » The government of the Soviet Union presented a note to its Turkish counterparts which refuted the latter's sovereignty over the Turkish Straits, thus beginning the Turkish Straits crisis.
When copying data from this family tree, please include a reference to the origin: P. Rogier, "Family tree Rogier", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-rogier/I46844331.php : accessed February 4, 2026), "Aaltje Hendrika KOOPMAN (1913-1946)".
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