The temperature on May 12, 1888 was about 11.0 °C. The air pressure was 12 kgf/m2 and came mainly from the north-northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 57%. 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.
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
March 20 » The premiere of the very first Romani language operetta is staged in Moscow, Russia.
September 4 » George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.
September 8 » Isaac Peral's submarine is first tested.
October 14 » Louis Le Prince films the first motion picture, Roundhay Garden Scene.
October 15 » The "From Hell" letter allegedly sent by Jack the Ripper is received by investigators.
October 30 » The Rudd Concession is granted by Matabeleland to agents of Cecil Rhodes.
Day of marriage April 18, 1919
The temperature on April 18, 1919 was between 2.7 °C and 12.4 °C and averaged 8.5 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
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.
May 19 » Mustafa Kemal Atatürk lands at Samsun on the Anatolian Black Sea coast, initiating what is later termed the Turkish War of Independence.
July 13 » The British airship R34 lands in Norfolk, England, completing the first airship return journey across the Atlantic in 182 hours of flight.
July 27 » The Chicago Race Riot erupts after a racial incident occurred on a South Side beach, leading to 38 fatalities and 537 injuries over a five-day period.
August 11 » Germany's Weimar Constitution is signed into law.
September 18 » The Netherlands gives women the right to vote.
September 28 » Race riots begin in Omaha, Nebraska.
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/I487535.php : accessed January 15, 2026), "Maagje Kok (1888-????)".
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