The temperature on August 23, 1887 was about 21.1 °C. The air pressure was 4 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 48%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
February 8 » The Dawes Act authorizes the President of the United States to survey Native American tribal land and divide it into individual allotments.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
September 5 » A fire at the Theatre Royal, Exeter, kills 186.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
Day of marriage May 9, 1917
The temperature on May 9, 1917 was between 4.9 °C and 17.2 °C and averaged 10.8 °C. There was 13.2 hours of sunshine (86%). The average windspeed was 4 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.
January 11 » The Kingsland munitions factory explosion occurs as a result of sabotage.
May 21 » The Great Atlanta fire of 1917 causes $5.5million in damages, destroying some 300 acres including 2,000 homes, businesses and churches, displacing about 10,000 people but leading to only one fatality (due to heart attack).
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
August 6 » World War I: Battle of Mărășești between the Romanian and German armies begins.
November 5 » October Revolution: Lenin calls for the October Revolution.
December 20 » Cheka, the first Soviet secret police force, is founded.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I32435.php : accessed February 26, 2026), "Jacob Schoonewil (1887-????)".
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