The temperature on March 1, 1911 was between 3.3 °C and 9.2 °C and averaged 6.1 °C. There was 1.4 mm of rain. There was 6.8 hours of sunshine (63%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-northwest. Source: KNMI
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 29 » Italy declares war on the Ottoman Empire.
Day of marriage April 29, 1937
The temperature on April 29, 1937 was between 6.1 °C and 10.4 °C and averaged 7.5 °C. There was 0.3 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
April 12 » Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.
May 7 » Spanish Civil War: The German Condor Legion, equipped with Heinkel He 51 biplanes, arrives in Spain to assist Francisco Franco's forces.
August 14 » The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when six Japanese bombers are shot down by Chinese fighters while raiding Chinese air bases.
August 28 » Toyota Motors becomes an independent company.
September 25 » Second Sino-Japanese War: The Chinese Eighth Route Army gains a minor, but morale-boosting victory in the Battle of Pingxingguan.
December 29 » The Irish Free State is replaced by a new state called Ireland with the adoption of a new constitution.
Day of death April 28, 1972
The temperature on April 28, 1972 was between 1.6 °C and 10.7 °C and averaged 6.8 °C. There was 0.2 mm of rain during 0.2 hours. There was 5.3 hours of sunshine (36%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
January 26 » JAT Fight 367 is destroyed by a terrorist bomb, killing 27 of the 28 people on board the DC-9. Flight attendant Vesna Vulović survives with critical injuries.
May 5 » Alitalia Flight 112 crashes into Mount Longa near Palermo, Sicily, killing all 115 aboard, making it the deadliest single-aircraft disaster in Italy.
May 26 » The United States and the Soviet Union sign the Anti-Ballistic Missile Treaty.
June 23 » Watergate scandal: U.S. President Richard M. Nixon and White House Chief of Staff H. R. Haldeman are taped talking about using the Central Intelligence Agency to obstruct the Federal Bureau of Investigation's investigation into the Watergate break-ins.
September 11 » The San Francisco Bay Area Rapid Transit system begins passenger service.
December 11 » Apollo 17 becomes the sixth and final Apollo mission to land on the Moon.
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/I139995.php : accessed October 10, 2026), "Tjeerd Henstra (1911-1972)".
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