The temperature on December 20, 1917 was between -10.8 °C and -3.7 °C and averaged -6.9 °C. There was 0.1 mm of rain. There was 3.2 hours of sunshine (41%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. 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 5 » The Congress of the United States passes the Immigration Act of 1917 over President Woodrow Wilson's veto.
May 13 » Three children report the first apparition of Our Lady of Fátima in Fátima, Portugal.
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
June 28 » World War I: Greece joins the Allied powers.
July 6 » World War I: Arabian troops led by T. E. Lawrence ("Lawrence of Arabia") and Auda ibu Tayi capture Aqaba from the Ottoman Empire during the Arab Revolt.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
When copying data from this family tree, please include a reference to the origin: Esther Zeelenberg, "Family tree Zeelenberg-Kouwenhoven-Leijssenaar", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-zeelenberg/R77.php : accessed February 15, 2026), "Christina Leyssenaar (1896-????)".
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