The temperature on May 17, 1914 was between 7.6 °C and 20.2 °C and averaged 14.5 °C. There was 14.1 hours of sunshine (89%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
August 4 » In response to the German invasion of Belgium, Belgium and the British Empire declare war on Germany. The United States declares its neutrality.
August 5 » World War I: The German minelayer SSKönigin Luise lays a minefield about 40 miles (64km) off the Thames Estuary (Lowestoft). She is intercepted and sunk by the British light-cruiser HMSAmphion.
August 15 » The Panama Canal opens to traffic with the transit of the cargo ship SSAncon.
August 24 » World War I: German troops capture Namur.
November 9 » SMSEmden is sunk by HMASSydney in the Battle of Cocos.
November 23 » Mexican Revolution: The last of U.S. forces withdraw from Veracruz, occupied seven months earlier in response to the Tampico Affair.
Day of marriage September 30, 1937
The temperature on September 30, 1937 was between 5.8 °C and 16.7 °C and averaged 11.2 °C. There was 8.7 hours of sunshine (74%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
April 12 » Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.
May 6 » Hindenburg disaster: The German zeppelin Hindenburg catches fire and is destroyed within a minute while attempting to dock at Lakehurst, New Jersey. Thirty-six people are killed.
May 26 » Walter Reuther and members of the United Auto Workers (UAW) clashed with Ford Motor Company security guards at the River Rouge Complex complex in Dearborn, Michigan, during the Battle of the Overpass.
July 9 » The silent film archives of Fox Film Corporation are destroyed by the 1937 Fox vault fire.
August 1 » Josip Broz Tito reads the resolution "Manifesto of constitutional congress of KPH" to the constitutive congress of KPH (Croatian Communist Party) in woods near Samobor.
December 13 » Second Sino-Japanese War: Battle of Nanking: The city of Nanjing, defended by the National Revolutionary Army under the command of General Tang Shengzhi, falls to the Japanese. This is followed by the Nanking Massacre, in which Japanese troops rape and slaughter hundreds of thousands of civilians.
Day of death August 4, 1947
The temperature on August 4, 1947 was between 11.2 °C and 26.4 °C and averaged 19.7 °C. There was 0.1 mm of rain during 0.1 hours. There was 9.3 hours of sunshine (61%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the ??. Source: KNMI
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/I122365.php : accessed October 20, 2026), "Jan Sytsma (1914-1947)".
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