April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage September 5, 1917
The temperature on September 5, 1917 was between 9.0 °C and 21.8 °C and averaged 15.9 °C. There was 11.4 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
February 3 » First World War: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare.
June 26 » World War I: The American Expeditionary Forces begin to arrive in France. They will first enter combat four months later.
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
October 13 » The "Miracle of the Sun" is witnessed by an estimated 70,000 people in the Cova da Iria in Portugal.
October 25 » Old Style date of the October Revolution in Russia.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I44374.php : accessed March 15, 2026), "Petrus Paulus Kluivers (1897-????)".
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