The temperature on February 16, 1906 was between 0.4 °C and 6.4 °C and averaged 3.6 °C. There was 0.1 hours of sunshine (1%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
February 11 » Pope Pius X publishes the encyclical Vehementer Nos.
February 18 » Édouard de Laveleye forms the Belgian Olympic Committee in Brussels.
April 7 » Mount Vesuvius erupts and devastates Naples.
August 13 » The all black infantrymen of the U.S. Army's 25th Infantry Regiment are accused of killing a white bartender and wounding a white police officer in Brownsville, Texas, despite exculpatory evidence; all are later dishonorably discharged. (Their records were later restored to reflect honorable discharges but there were no financial settlements.)
September 20 » The Cunard Line's RMSMauretania is launched at Newcastle upon Tyne, England.
September 24 » Racial tensions exacerbated by rumors lead to the Atlanta Race Riot, further increasing racial segregation.
Day of marriage December 20, 1939
The temperature on December 20, 1939 was between -7.6 °C and 2.6 °C and averaged -1.8 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
August 31 » Nazi Germany mounts a false flag attack on the Gleiwitz radio station, creating an excuse to attack Poland the following day, thus starting World War II in Europe.
September 1 » General George C. Marshall becomes Chief of Staff of the United States Army.
September 1 » World War II: Nazi Germany and Slovakia invade Poland, beginning the European phase of World War II.
September 3 » World War II: The United Kingdom and France begin a naval blockade of Germany that lasts until the end of the war. This also marks the beginning of the Battle of the Atlantic.
September 21 » Romanian Prime Minister Armand Călinescu is assassinated by the Iron Guard.
September 28 » World War II: Nazi Germany and the Soviet Union agree on a division of Poland.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I69698.php : accessed February 2, 2026), "Hendrikus Leonardus Semler (1906-)".
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