The temperature on April 16, 1891 was about 10.0 °C. The air pressure was 2 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 75%. Source: KNMI
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.
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
January 29 » Liliuokalani is proclaimed the last monarch and only queen regnant of the Kingdom of Hawaii.
February 15 » Allmänna Idrottsklubben (AIK) (Swedish Sports Club) is founded.
March 17 » SSUtopia collides with HMSAnson in the Bay of Gibraltar and sinks, killing 562 of the 880 passengers on board.
May 15 » Pope Leo XIII defends workers' rights and property rights in the encyclical Rerum novarum, the beginning of modern Catholic social teaching.
August 24 » Thomas Edison patents the motion picture camera.
October 1 » Stanford University opens its doors in California, United States.
Day of marriage December 30, 1920
The temperature on December 30, 1920 was between 6.1 °C and 12.7 °C and averaged 9.6 °C. There was 3.5 hours of sunshine (45%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-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.
January 19 » The United States Senate votes against joining the League of Nations.
February 13 » The Negro National League is formed.
March 8 » The Arab Kingdom of Syria, the first modern Arab state to come into existence, is established.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
August 16 » The congress of the Communist Party of Bukhara opens. The congress would call for armed revolution.
August 25 » Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat.
Day of death February 18, 1956
The temperature on February 18, 1956 was between -14.6 °C and -4.5 °C and averaged -8.5 °C. There was 0.4 mm of rain during 1.0 hours. There was 4.6 hours of sunshine (45%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
March 20 » Tunisia gains independence from France.
March 23 » Pakistan becomes the first Islamic republic in the world. This date is now celebrated as Republic Day in Pakistan.
July 13 » The Dartmouth workshop is the first conference on artificial intelligence.
September 13 » The dike around the Dutch polder East Flevoland is closed.
October 31 » Suez Crisis: The United Kingdom and France begin bombing Egypt to force the reopening of the Suez Canal.
November 12 » In the midst of the Suez Crisis, Palestinian refugees are shot dead in Rafah by Israeli soldiers following the invasion of the Gaza Strip.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I719.php : accessed January 16, 2026), "Wilhelmina Cornelia van Bedaf (1891-1956)".
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