The temperature on June 9, 1889 was about 17.5 °C. There was 0.9 mm of rain. The airpressure was 75 cm mercury. The atmospheric humidity was 95%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
May 11 » An attack upon a U.S. Army paymaster and escort results in the theft of over $28,000 and the award of two Medals of Honor.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of death July 21, 1941
The temperature on July 21, 1941 was between 8.2 °C and 19.7 °C and averaged 14.9 °C. There was 4.5 hours of sunshine (28%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
April 1 » A military coup in Iraq overthrows the regime of 'Abd al-Ilah and installs Rashid Ali al-Gaylani as Prime Minister.
April 16 » World War II: The Nazi-affiliated Ustaše is put in charge of the Independent State of Croatia by the Axis powers after Operation 25 is effected.
June 22 » World War II: Nazi Germany invades the Soviet Union in Operation Barbarossa.
June 23 » The Lithuanian Activist Front declares independence from the Soviet Union and forms the Provisional Government of Lithuania; it lasts only briefly as the Nazis will occupy Lithuania a few weeks later.
September 17 » World War II: Soviet forces enter Tehran during the Anglo-Soviet invasion of Iran.
December 12 » World War II: Fifty-four Japanese A6M Zero fighters raid Batangas Field, Philippines. Jesús Villamor and four Filipino fighter pilots fend them off; César Basa is killed.
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/I63044.php : accessed December 28, 2025), "Jan Sikkens (1889-1941)".
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