January 28 » Walter Arnold of East Peckham, Kent, becomes the first person to be convicted of speeding. He was fined one shilling, plus costs, for speeding at 8mph (13km/h), thereby exceeding the contemporary speed limit of 2mph (3.2km/h).
March 1 » Henri Becquerel discovers radioactive decay.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
July 28 » The city of Miami, Florida is incorporated.
August 16 » Skookum Jim Mason, George Carmack and Dawson Charlie discover gold in a tributary of the Klondike River in Canada, setting off the Klondike Gold Rush.
Day of marriage July 20, 1917
The temperature on July 20, 1917 was between 10.0 °C and 20.3 °C and averaged 15.8 °C. There was 13.6 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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 11 » The Kingsland munitions factory explosion occurs as a result of sabotage.
January 19 » Silvertown explosion: A blast at a munitions factory in London kills 73 and injures over 400. The resulting fire causes over £2,000,000 worth of damage.
January 22 » World War I: President Woodrow Wilson of the still-neutral United States calls for "peace without victory" in Europe.
February 23 » First demonstrations in Saint Petersburg, Russia. The beginning of the February Revolution (March 8 in the Gregorian calendar).
December 2 » World War I: Russia and the Central Powers sign an armistice at Brest-Litovsk, and peace talks leading to the Treaty of Brest-Litovsk begin.
December 6 » World War I: USSJacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SMU-53.
Day of death January 3, 1951
The temperature on January 3, 1951 was between -1.8 °C and 2.5 °C and averaged 0.3 °C. There was 1.6 hours of sunshine (20%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
In The Netherlands , there was from March 15, 1951 to September 2, 1952 the cabinet Drees I, with Dr. W. Drees (PvdA) as prime minister.
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/I45663.php : accessed March 16, 2026), "Hendrica Francina Elisabeth Dokter (1896-1951)".
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