April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage September 21, 1918
The temperature on September 21, 1918 was between 9.0 °C and 16.0 °C and averaged 12.3 °C. There was 11.2 mm of rain. There was 4.9 hours of sunshine (40%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 28 » Finnish Civil War: The Red Guard rebels seize control of the capital, Helsinki; members of the Senate of Finland go underground.
January 29 » Ukrainian–Soviet War: An armed uprising organized by the Bolsheviks in anticipation of the encroaching Red Army begins at the Kiev Arsenal, which will be put down six days later.
January 29 » Ukrainian–Soviet War: The Bolshevik Red Army, on its way to besiege Kiev, is met by a small group of military students at the Battle of Kruty.
July 4 » Bolsheviks kill Tsar Nicholas II of Russia and his family (Julian calendar date).
July 12 » The Imperial Japanese Navy battleship Kawachi blows up at Shunan, western Honshu, Japan, killing at least 621.
September 29 » The Hindenburg Line is broken by an Allied attack.
When copying data from this family tree, please include a reference to the origin: P. Heres, "Family tree Apool", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-apool/I1099050930.php : accessed January 29, 2026), "Berendina Johanna Veldkamp (1897-????)".
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