The temperature on November 9, 1914 was between 7.2 °C and 11.8 °C and averaged 9.2 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the 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.
January 1 » The SPT Airboat Line becomes the world's first scheduled airline to use a winged aircraft.
July 4 » The funeral of Archduke Franz Ferdinand and his wife Sophie takes place in Vienna, six days after their assassinations in Sarajevo.
August 6 » World War I: First Battle of the Atlantic: Two days after the United Kingdom had declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea.
August 12 » World War I: The United Kingdom declares war on Austria-Hungary; the countries of the British Empire follow suit.
August 23 » World War I: Japan declares war on Germany.
August 26 » World War I: During the retreat from Mons, the British II Corps commanded by General Sir Horace Smith-Dorrien fought a vigorous and successful defensive action at Le Cateau.
Day of marriage March 15, 1941
The temperature on March 15, 1941 was between -1.7 °C and 14.6 °C and averaged 5.5 °C. There was 9.8 hours of sunshine (83%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
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.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 6 » United States President Franklin D. Roosevelt delivers his Four Freedoms speech in the State of the Union address.
February 5 » World War II: Allied forces begin the Battle of Keren to capture Keren, Eritrea.
March 2 » World War II: First German military units enter Bulgaria after it joins the Axis Pact.
April 27 » World War II: The Communist Party of Slovenia, the Slovene Christian Socialists, the left-wing Slovene Sokols (also known as "National Democrats") and a group of progressive intellectuals establish the Liberation Front of the Slovene Nation.
September 8 » World War II: German forces begin the Siege of Leningrad.
December 11 » World War II: Poland declares war on the Empire of Japan.
Day of death December 21, 1984
The temperature on December 21, 1984 was between 2.8 °C and 9.6 °C and averaged 6.4 °C. There was 1.7 mm of rain during 0.9 hours. There was 3.8 hours of sunshine (49%). The partly 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 Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 22 » President of Bangladesh, H M Ershad upgraded South Sylhet's sub-division status to a district and renamed it back to Moulvibazar.
March 6 » In the United Kingdom, a walkout at Cortonwood Colliery in Brampton Bierlow signals the start of a strike that lasted almost a year and involved the majority of the country's miners.
April 19 » Advance Australia Fair is proclaimed as Australia's national anthem, and green and gold as the national colours.
July 18 » McDonald's massacre in San Ysidro, California: In a fast-food restaurant, James Oliver Huberty opens fire, killing 21 people and injuring 19 others before being shot dead by police.
August 4 » The Republic of Upper Volta changes its name to Burkina Faso.
October 16 » Desmond Tutu is awarded the Nobel Peace Prize.
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/I80649.php : accessed February 23, 2026), "Roelof Lasker (1914-1984)".
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