March 19 » Auguste and Louis Lumière record their first footage using their newly patented cinematograph.
April 6 » Oscar Wilde is arrested in the Cadogan Hotel, London, after losing a libel case against the Marquess of Queensberry.
April 24 » Joshua Slocum, the first person to sail single-handedly around the world, sets sail from Boston, Massachusetts aboard the sloop "Spray".
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage June 10, 1915
The temperature on June 10, 1915 was between 15.4 °C and 25.6 °C and averaged 18.8 °C. There was 5.0 mm of rain. There was 4.4 hours of sunshine (26%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
January 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
January 22 » Over 600 people are killed in Guadalajara, Mexico, when a train plunges off the tracks into a deep canyon.
May 22 » Lassen Peak erupts with a powerful force, the only volcano besides Mount St. Helens to erupt in the contiguous U.S. during the 20th century.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
December 20 » World War I: The last Australian troops are evacuated from Gallipoli.
Day of death December 30, 1927
The temperature on December 30, 1927 was between -7.0 °C and 0.8 °C and averaged -3.9 °C. There was 6.6 hours of sunshine (85%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 22 » Teddy Wakelam gives the first live radio commentary of a football match, between Arsenal F.C. and Sheffield United at Highbury.
April 23 » Cardiff City defeat Arsenal in the FA Cup Final, the only time it has been won by a team not based in England.
May 8 » Attempting to make the first non-stop transatlantic flight from Paris to New York, French war heroes Charles Nungesser and François Coli disappear after taking off aboard The White Bird biplane.
August 7 » The Peace Bridge opens between Fort Erie, Ontario and Buffalo, New York.
August 23 » Italian anarchists Sacco and Vanzetti are executed after a lengthy, controversial trial.
December 11 » Guangzhou Uprising: Communist Red Guards launch an uprising in Guangzhou, China, taking over most of the city and announcing the formation of a Guangzhou Soviet.
When copying data from this family tree, please include a reference to the origin: Hans Docter, "Family tree Docter", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-docter/I3282.php : accessed February 21, 2026), "Pietertje Keemink (1895-1927)".
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