The temperature on April 5, 1914 was between 3.8 °C and 11.6 °C and averaged 8.5 °C. There was 2.7 mm of rain. There was 2.8 hours of sunshine (21%). The average windspeed was 5 Bft (very strong wind) 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.
July 28 » In the culmination of the July Crisis, Austria-Hungary declares war on Serbia, igniting World War I.
August 15 » World War I: Beginning of the Battle of Cer, the first Allied victory of World War I.
September 11 » World War I: Australia invades German New Guinea, defeating a German contingent at the Battle of Bita Paka.
November 15 » Harry Turner becomes the first player to die from game-related injuries in the "Ohio League", the direct predecessor to the National Football League.
November 23 » Mexican Revolution: The last of U.S. forces withdraw from Veracruz, occupied seven months earlier in response to the Tampico Affair.
December 16 » World War I: Admiral Franz von Hipper commands a raid on Scarborough, Hartlepool and Whitby.
Day of marriage August 8, 1940
The temperature on August 8, 1940 was between 13.2 °C and 21.2 °C and averaged 16.7 °C. There was 3.9 mm of rain during 1.9 hours. There was 5.0 hours of sunshine (33%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
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.
June 17 » World War II: The British Army's 11th Hussars assault and take Fort Capuzzo in Libya, Africa from Italian forces.
August 18 » World War II: The Hardest Day air battle, part of the Battle of Britain. At that point, the largest aerial engagement in history with heavy losses sustained on both sides.
August 25 » World War II: The first Bombing of Berlin by the British Royal Air Force.
September 12 » An explosion at the Hercules Powder Company plant in Kenvil, New Jersey kills 51 people and injures over 200.
November 2 » World War II: First day of Battle of Elaia–Kalamas between the Greeks and the Italians.
November 14 » World War II: In England, Coventry is heavily bombed by German Luftwaffe bombers. Coventry Cathedral is almost completely destroyed.
Day of death September 20, 1959
The temperature on September 20, 1959 was between 6.3 °C and 20.5 °C and averaged 14.1 °C. There was 4.8 hours of sunshine (39%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
February 3 » Rock and roll musicians Buddy Holly, Ritchie Valens, and J. P. "The Big Bopper" Richardson are killed in a plane crash near Clear Lake, Iowa.
February 20 » The Avro Arrow program to design and manufacture supersonic jet fighters in Canada is cancelled by the Diefenbaker government amid much political debate.
February 28 » Discoverer 1, an American spy satellite that is the first object intended to achieve a polar orbit, is launched but fails to achieve orbit.
March 30 » Tenzin Gyatso, the 14th Dalai Lama, flees Tibet for India.
April 8 » A team of computer manufacturers, users, and university people led by Grace Hopper meets to discuss the creation of a new programming language that would be called COBOL.
November 23 » French President Charles de Gaulle declares in a speech in Strasbourg his vision for "Europe, from the Atlantic to the Urals".
When copying data from this family tree, please include a reference to the origin: J. Demmers, "Family tree Demmers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-demmers/I2425.php : accessed March 5, 2026), "Jacob Willem "Jaap" Demmers (1914-1959)".
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