The temperature on February 4, 1889 was about -1.9 °C. There was 0.3 mm of rain. The air pressure was 80 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 77%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
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.
February 22 » President Grover Cleveland signs a bill admitting North Dakota, South Dakota, Montana and Washington as U.S. states.
May 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
November 23 » The first jukebox goes into operation at the Palais Royale Saloon in San Francisco.
Day of marriage April 15, 1918
The temperature on April 15, 1918 was between 5.9 °C and 7.0 °C and averaged 6.5 °C. There was 0.8 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-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.
February 6 » British women over the age of 30 who meet minimum property qualifications, get the right to vote when Representation of the People Act 1918 is passed by Parliament.
March 31 » Daylight saving time goes into effect in the United States for the first time.
April 23 » World War I: The British Royal Navy makes a raid in an attempt to neutralise the Belgian port of Bruges-Zeebrugge.
May 14 » Cape Town Mayor, Sir Harry Hands, inaugurates the Two-minute silence.
May 29 » Armenia defeats the Ottoman Army in the Battle of Sardarabad.
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/I283887.php : accessed February 23, 2026), "Wilhelmus Roovers (1889-????)".
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