January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
June 9 » Indian nationalist Birsa Munda dies of cholera in a British prison.
July 9 » The Federation of Australia is given royal assent.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 22, 1918
The temperature on May 22, 1918 was between 10.1 °C and 27.0 °C and averaged 19.7 °C. There was 12.4 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
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 25 » The Ukrainian People's Republic declares independence from Soviet Russia.
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.
June 22 » The Hammond Circus Train Wreck kills 86 and injures 127 near Hammond, Indiana.
July 15 » World War I: The Second Battle of the Marne begins near the River Marne with a German attack.
August 30 » Fanni Kaplan shoots and seriously injures Bolshevik leader Vladimir Lenin, which along with the assassination of Bolshevik senior official Moisei Uritsky days earlier, prompts the decree for Red Terror.
October 9 » The Finnish Parliament offers to Prince Frederick Charles of Hesse the throne of a short-lived Kingdom of Finland.
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/I131801.php : accessed October 19, 2026), "Janke "Jennie" Oldenburger (1900-)".
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