The temperature on April 9, 1889 was about 12.2 °C. The air pressure was 4 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 64%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 15 » The Coca-Cola Company, then known as the Pemberton Medicine Company, is incorporated in Atlanta.
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
June 6 » The Great Seattle Fire destroys all of downtown Seattle.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
July 11 » Tijuana, Mexico, is founded.
Day of marriage June 15, 1915
The temperature on June 15, 1915 was between 5.3 °C and 21.7 °C and averaged 15.1 °C. There was 13.9 hours of sunshine (83%). 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.
February 19 » World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.
May 24 » World War I: Italy declares war on Austria-Hungary, joining the conflict on the side of the Allies.
June 21 » The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915, striking down Oklahoma grandfather clause legislation which had the effect of denying the right to vote to blacks.
July 28 » The United States begins a 19-year occupation of Haiti.
October 14 » World War I: Bulgaria joins the Central Powers.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I114869.php : accessed March 10, 2026), "Petrus Josephus Andreas Reijnen (1889-????)".
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