The temperature on July 9, 1912 was between 10.4 °C and 21.2 °C and averaged 15.8 °C. There was 7.8 hours of sunshine (47%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
April 10 » RMS Titanic sets sail from Southampton, England on her maiden and only voyage.
September 2 » Arthur Rose Eldred is awarded the first Eagle Scout award of the Boy Scouts of America.
October 11 » First Balkan War: The day after the Battle of Sarantaporo, Greek troops liberate the city of Kozani.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
November 5 » Woodrow Wilson is elected the 28th President of the United States, defeating incumbent William Howard Taft.
December 8 » Leaders of the German Empire hold an Imperial War Council to discuss the possibility that war might break out.
Day of marriage May 20, 1939
The temperature on May 20, 1939 was between 1.7 °C and 15.8 °C and averaged 9.1 °C. There was 12.2 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
February 27 » United States labor law: The U.S. Supreme Court rules in NLRB v. Fansteel Metallurgical Corp. that the National Labor Relations Board has no authority to force an employer to rehire workers who engage in sit-down strikes.
March 2 » Cardinal Eugenio Pacelli is elected Pope and takes the name Pius XII.
March 15 » Germany occupies Czechoslovakia.
September 1 » General George C. Marshall becomes Chief of Staff of the United States Army.
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 30 » World War II: General Władysław Sikorski becomes prime minister of the Polish government-in-exile.
Day of death January 20, 1982
The temperature on January 20, 1982 was between 0.2 °C and 7.0 °C and averaged 2.5 °C. There was 0.1 mm of rain during 0.5 hours. There was 6.6 hours of sunshine (78%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Saturday, May 29, 1982 to Thursday, November 4, 1982 the cabinet Van Agt III, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
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/I524945.php : accessed February 18, 2026), "Martinus van Os (1912-1982)".
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