February 15 » The battleship USSMaine explodes and sinks in Havana harbor in Cuba, killing 274. This event leads the United States to declare war on Spain.
April 22 » Spanish–American War: The USSNashville captures a Spanish merchant ship.
May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
May 8 » The first games of the Italian football league system are played.
June 17 » The United States Navy Hospital Corps is established.
September 21 » Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
Day of marriage July 28, 1917
The temperature on July 28, 1917 was between 10.9 °C and 23.6 °C and averaged 18.1 °C. There was 10.5 hours of sunshine (67%). 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.
May 26 » Several powerful tornadoes rip through Illinois, including the city of Mattoon.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
July 17 » King George V issues a Proclamation stating that the male line descendants of the British Royal Family will bear the surname Windsor.
September 14 » The Russian Empire is formally replaced by the Russian Republic.
October 24 » First World War: Italy suffers a disastrous defeat on the Austro-Italian front.
November 2 » The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I12478.php : accessed October 6, 2026), "Pieter Kooistra (1898-????)".
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