The temperature on July 21, 1913 was between 9.7 °C and 17.5 °C and averaged 13.6 °C. There was 6.6 hours of sunshine (41%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
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 18 » First Balkan War: A Greek flotilla defeats the Ottoman Navy in the Naval Battle of Lemnos, securing the islands of the Northern Aegean Sea for Greece.
April 8 » The 17th Amendment to the United States Constitution, requiring direct election of Senators, becomes law.
June 1 » The Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
July 12 » Serbian forces begin their siege of the Bulgarian city of Vidin; the siege is later called off when the war ends.
August 10 » Second Balkan War: Delegates from Bulgaria, Romania, Serbia, Montenegro, and Greece sign the Treaty of Bucharest, ending the war.
August 28 » Queen Wilhelmina opens the Peace Palace in The Hague.
Day of death February 12, 1991
The temperature on February 12, 1991 was between -10.1 °C and 1.3 °C and averaged -3.4 °C. There was 0.3 mm of rain during 3.0 hours. There was 2.8 hours of sunshine (29%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
June 17 » Apartheid: The South African Parliament repeals the Population Registration Act which required racial classification of all South Africans at birth.
July 10 » Boris Yeltsin takes office as the first elected President of Russia.
July 11 » Nigeria Airways Flight 2120 crashes in Jeddah, Saudi Arabia killing all 261 passengers and crew on board.
August 21 » Coup attempt against Mikhail Gorbachev collapses.
August 25 » Linus Torvalds announces the first version of what will become Linux.
October 11 » Prof. Anita Hill delivers her televised testimony concerning sexual harassment during the Clarence Thomas Supreme Court nomination.
When copying data from this family tree, please include a reference to the origin: Henk Weimer, "Family tree Weimer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weimer/R81.php : accessed January 23, 2026), "Jan de Knegt (1913-1991)".
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