The temperature on March 31, 1887 was about 5.0 °C. There was 3 mm of rain. The air pressure was 14 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 98%. 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 23 » The French Riviera is hit by a large earthquake, killing around 2,000.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
November 13 » Bloody Sunday clashes in central London.
Day of marriage May 4, 1914
The temperature on May 4, 1914 was between 7.5 °C and 17.2 °C and averaged 12.6 °C. There was 0.4 mm of rain. There was 2.9 hours of sunshine (19%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
March 1 » The Republic of China joins the Universal Postal Union.
March 7 » Prince William of Wied arrives in Albania to begin his reign as King.
June 28 » Archduke Franz Ferdinand of Austria and his wife Sophie are assassinated in Sarajevo; this is the casus belli of World War I.
August 2 » The German occupation of Luxembourg during World War I begins.
November 2 » World War I: The Russian Empire declares war on the Ottoman Empire and the Dardanelles are subsequently closed.
November 26 » HMS Bulwark was destroyed by a large internal explosion with the loss of 741 men near Sheerness.
Day of death September 12, 1966
The temperature on September 12, 1966 was between 13.2 °C and 25.0 °C and averaged 18.6 °C. There was 3.9 hours of sunshine (30%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
May 30 » Former Congolese Prime Minister, Évariste Kimba, and several other politicians are publicly executed in Kinshasa on the orders of President Joseph Mobutu.
July 18 » A racially charged incident in a bar sparks the six-day Hough riots in Cleveland, Ohio; 1,700 Ohio National Guard troops intervene to restore order.
October 1 » West Coast Airlines Flight 956 crashes with no survivors in Oregon. This accident marks the first loss of a DC-9.
October 5 » A reactor at the Enrico Fermi Nuclear Generating Station near Detroit suffers a partial meltdown.
October 22 » The Soviet Union launches Luna 12.
December 8 » The Greek ship SSHeraklion sinks in a storm in the Aegean Sea, killing over 200.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I55486.php : accessed February 19, 2026), "Wiebe Mulder (1887-1966)".
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