The temperature on January 9, 1913 was between -1.5 °C and 2.6 °C and averaged 0.5 °C. There was 4.6 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
February 19 » Pedro Lascuráin becomes President of Mexico for 45 minutes; this is the shortest term to date of any person as president of any country.
April 8 » The 17th Amendment to the United States Constitution, requiring direct election of Senators, becomes law.
May 30 » The Treaty of London is signed, ending the First Balkan War; Albania becomes an independent nation.
June 23 » Second Balkan War: The Greeks defeat the Bulgarians in the Battle of Doiran.
October 9 » The steamship SSVolturno catches fire in the mid-Atlantic.
October 31 » The Indianapolis Streetcar Strike and subsequent riot begins.
Day of death June 6, 1986
The temperature on June 6, 1986 was between 8.4 °C and 13.6 °C and averaged 10.2 °C. There was 13.0 mm of rain during 8.8 hours. There was 1.3 hours of sunshine (8%). The almost completely overcast 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.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 13 » A month-long violent struggle begins in Aden, South Yemen between supporters of Ali Nasir Muhammad and Abdul Fattah Ismail, resulting in thousands of casualties.
January 28 » Space Shuttle program: STS-51-L mission: Space Shuttle Challenger disintegrates after liftoff, killing all seven astronauts on board.
February 7 » Twenty-eight years of one-family rule end in Haiti, when President Jean-Claude Duvalier flees the Caribbean nation.
June 30 » The U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.
August 20 » In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide.
November 3 » Iran–Contra affair: The Lebanese magazine Ash-Shiraa reports that the United States has been secretly selling weapons to Iran in order to secure the release of seven American hostages held by pro-Iranian groups in Lebanon.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I6240.php : accessed February 15, 2026), "Herman de Groot (1913-1986)".
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