The temperature on March 30, 1914 was between 3.8 °C and 14.2 °C and averaged 9.5 °C. There was 1.0 mm of rain. There was 4.8 hours of sunshine (38%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
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.
April 9 » Mexican Revolution: One of the world's first naval/air skirmishes takes place off the coast of western Mexico.
April 24 » The Franck–Hertz experiment, a pillar of quantum mechanics, is presented to the German Physical Society.
May 29 » The Ocean liner RMSEmpress of Ireland sinks in the Gulf of Saint Lawrence with the loss of 1,012 lives.
June 12 » Massacre of Phocaea: Turkish irregulars slaughter 50 to 100 Greeks and expel thousands of others in an ethnic cleansing operation in the Ottoman Empire.
October 18 » The Schoenstatt Movement is founded in Germany.
December 15 » World War I: The Serbian Army recaptures Belgrade from the invading Austro-Hungarian Army.
Day of marriage October 31, 1936
The temperature on October 31, 1936 was between 7.3 °C and 12.8 °C and averaged 10.4 °C. There was 1.5 mm of rain during 1.4 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
March 16 » Warmer-than-normal temperatures rapidly melt snow and ice on the upper Allegheny and Monongahela rivers, leading to a major flood in Pittsburgh.
April 15 » First day of the Arab revolt in Mandatory Palestine.
June 11 » The London International Surrealist Exhibition opens.
July 6 » A major breach of the Manchester Bolton & Bury Canal in England sends millions of gallons of water cascading 200 feet (61m) into the River Irwell.
December 21 » First flight of the Junkers Ju 88 multi-role combat aircraft.
Day of death January 13, 1976
The temperature on January 13, 1976 was between 5.8 °C and 9.3 °C and averaged 7.9 °C. There was 2.1 mm of rain during 3.4 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
May 6 » The 6.5 Mw Friuli earthquake affected Northern Italy with a maximum Mercalli intensity of X (Extreme), leaving 900–978 dead and 1,700–2,400 injured.
June 29 » The Seychelles become independent from the United Kingdom.
July 17 » East Timor is annexed, and becomes the 27th province of Indonesia.
July 22 » Japan completes its last reparation to the Philippines for war crimes committed during imperial Japan's conquest of the country in the Second World War.
October 20 » The ferry George Prince is struck by a ship while crossing the Mississippi River. Seventy-eight passengers and crew die, and only 18 people aboard the ferry survive.
November 23 » Apneist Jacques Mayol is the first man to reach a depth of 100m undersea without breathing equipment.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I437544.php : accessed February 26, 2026), "Hendrik Westerhof (1914-1976)".
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