April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage May 21, 1920
The temperature on May 21, 1920 was between 5.4 °C and 14.1 °C and averaged 10.6 °C. There was 3.0 mm of rain. There was 0.3 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 13 » The Reichstag Bloodbath of January 13, 1920, the bloodiest demonstration in German history.
February 10 » Józef Haller de Hallenburg performs symbolic wedding of Poland to the sea, celebrating restitution of Polish access to open sea.
July 20 » The Greek Army takes control of Silivri after Greece is awarded the city by the Paris Peace Conference; by 1923 Greece effectively lost control to the Turks.
August 25 » Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
December 3 » Following more than a month of Turkish–Armenian War, the Turkish dictated Treaty of Alexandropol is concluded.
Day of death December 1, 1968
The temperature on December 1, 1968 was between 4.0 °C and 7.0 °C and averaged 5.1 °C. The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
March 12 » Mauritius achieves independence from the United Kingdom.
April 4 » Martin Luther King Jr. is assassinated by James Earl Ray at a motel in Memphis, Tennessee.
April 7 » Motor racing world champion Jim Clark is killed in an accident during a Formula Two race at Hockenheim.
May 12 » Vietnam War: North Vietnamese and Viet Cong forces attack Australian troops defending Fire Support Base Coral.
May 26 » H-dagurinn in Iceland: Traffic changes from driving on the left to driving on the right overnight
December 25 » Apollo program: Apollo 8 performs the first successful Trans-Earth injection (TEI) maneuver, sending the crew and spacecraft on a trajectory back to Earth from Lunar orbit.
Day of burial December 6, 1968
The temperature on December 6, 1968 was between -0.7 °C and 2.2 °C and averaged 1.2 °C. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 7 » Surveyor Program: Surveyor 7, the last spacecraft in the Surveyor series, lifts off from launch complex 36A, Cape Canaveral.
May 25 » The Gateway Arch in St. Louis, Missouri, is dedicated.
September 15 » The Soviet Zond 5 spaceship is launched, becoming the first spacecraft to fly around the Moon and re-enter the Earth's atmosphere.
October 11 » NASA launches Apollo 7, the first successful manned Apollo mission.
October 20 » Former First Lady Jacqueline Kennedy marries Greek shipping tycoon Aristotle Onassis.
November 26 » Vietnam War: United States Air Force helicopter pilot James P. Fleming rescues an Army Special Forces unit pinned down by Viet Cong fire. He is later awarded the Medal of Honor.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Jan Thonis", database, Genealogy Online (https://www.genealogieonline.nl/jan-thonis/I70287.php : accessed January 6, 2026), "Gijsbert van den Hoek (1897-1968)".
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