The temperature on October 20, 1915 was between 2.3 °C and 10.2 °C and averaged 6.7 °C. There was 1.6 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
January 19 » Georges Claude patents the neon discharge tube for use in advertising.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
July 5 » The Liberty Bell leaves Philadelphia by special train on its way to the Panama–Pacific International Exposition. This is the last trip outside Philadelphia that the custodians of the bell intend to permit.
July 7 » The First Battle of the Isonzo comes to an end.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of marriage November 12, 1937
The temperature on November 12, 1937 was between 0.8 °C and 9.4 °C and averaged 5.4 °C. There was 3.5 mm of rain during 2.0 hours. There was 1.9 hours of sunshine (21%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
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.
June 3 » The Duke of Windsor marries Wallis Simpson.
June 15 » A German expedition led by Karl Wien loses sixteen members in an avalanche on Nanga Parbat. It is the worst single disaster to occur on an 8000m peak.
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 24 » Spanish Civil War: the Basque Army surrenders to the Italian Corpo Truppe Volontarie following the Santoña Agreement.
October 9 » Murder of 9 Catholic priests in Zhengding, China, who protected the local population from the advancing Japanese army.
Day of death April 9, 1975
The temperature on April 9, 1975 was between -0.3 °C and 8.3 °C and averaged 3.9 °C. There was 4.2 mm of rain during 2.0 hours. There was 3.4 hours of sunshine (25%). The partly or heavily clouded 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.
June 5 » The Suez Canal opens for the first time since the Six-Day War.
September 16 » Cape Verde, Mozambique, and São Tomé and Príncipe join the United Nations.
September 24 » Southwest Face expedition members become the first persons to reach the summit of Mount Everest by any of its faces, instead of using a ridge route.
October 16 » The Australian Coalition sparks a constitutional crisis when they vote to defer funding for the government's annual budget.
November 11 » Independence of Angola.
December 2 » Laotian Civil War: The Pathet Lao seizes the Laotian capital of Vientiane, forces the abdication of King Sisavang Vatthana, and proclaims the Lao People's Democratic Republic.
When copying data from this family tree, please include a reference to the origin: Sake Siegersma, "Family tree Siegersma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-siegersma/I296.php : accessed February 11, 2026), "Maria Veenhof (1915-1975)".
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