March 1 » Henri Becquerel discovers radioactive decay.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 18 » Khodynka Tragedy: A mass panic on Khodynka Field in Moscow during the festivities of the coronation of Russian Tsar Nicholas II results in the deaths of 1,389 people.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 15 » The deadliest tsunami in Japan's history kills more than 22,000 people.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of marriage May 18, 1923
The temperature on May 18, 1923 was between 2.1 °C and 11.6 °C and averaged 7.2 °C. There was 12.2 mm of rain. There was 3.2 hours of sunshine (20%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
August 2 » Vice President Calvin Coolidge becomes U.S. President upon the death of President Warren G. Harding.
September 7 » The International Criminal Police Organization (INTERPOL) is formed.
September 8 » Honda Point disaster: Nine US Navy destroyers run aground off the California coast. Seven are lost, and twenty-three sailors killed.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 31 » The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Australia.
December 21 » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Day of death May 5, 1985
The temperature on May 5, 1985 was between 5.8 °C and 13.1 °C and averaged 9.8 °C. There was -0.1 mm of rain. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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 19 » William J. Schroeder becomes the first recipient of an artificial heart to leave the hospital.
July 17 » Founding of the EUREKA Network by former head of states François Mitterrand (France) and Helmut Kohl (Germany).
November 13 » The volcano Nevado del Ruiz erupts and melts a glacier, causing a lahar (volcanic mudslide) that buries Armero, Colombia, killing approximately 23,000 people.
November 15 » A research assistant is injured when a package from the Unabomber addressed to a University of Michigan professor explodes.
November 19 » Police in Baling, Malaysia, lay siege to houses occupied by an Islamic sect of about 400 people led by Ibrahim Mahmud.
December 27 » Palestinian guerrillas kill eighteen people inside the airports of Rome, Italy, and Vienna, Austria.
Day of cremation May 10, 1985
The temperature on May 10, 1985 was between 8.3 °C and 10.7 °C and averaged 9.5 °C. There was 0.1 mm of rain during 1.0 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) 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.
March 20 » Canadian paraplegic athlete and humanitarian Rick Hansen begins his circumnavigation of the globe in a wheelchair in the name of spinal cord injury medical research.
April 23 » Coca-Cola changes its formula and releases New Coke. The response is overwhelmingly negative, and the original formula is back on the market in less than three months.
May 13 » Police bombed MOVE headquarters in Philadelphia, killing six adults and five children, and destroying the homes of 250 city residents.
May 20 » Radio Martí, part of the Voice of America service, begins broadcasting to Cuba.
July 10 » The Greenpeace vessel Rainbow Warrior is bombed and sunk in Auckland harbour by French DGSE agents, killing Fernando Pereira.
December 20 » Pope John Paul II announces the institution of World Youth Day.
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The Family tree Jonker publication was prepared by Hendrik Willem Jonker (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Hendrik Willem Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-jonker/I32.php : accessed March 13, 2026), "Grietje "Griet" Jonker (1896-1985)".
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