April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
April 24 » Joshua Slocum, the first person to sail single-handedly around the world, sets sail from Boston, Massachusetts aboard the sloop "Spray".
May 25 » Playwright, poet and novelist Oscar Wilde is convicted of "committing acts of gross indecency with other male persons" and sentenced to serve two years in prison.
June 11 » Paris–Bordeaux–Paris, sometimes called the first automobile race in history or the "first motor race", takes place.
June 20 » The Kiel Canal, crossing the base of the Jutland peninsula and the busiest artificial waterway in the world, is officially opened.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
Day of marriage February 4, 1918
The temperature on February 4, 1918 was between -1.5 °C and 6.9 °C and averaged 2.5 °C. There was 0.2 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
January 31 » A series of accidental collisions on a misty Scottish night leads to the loss of two Royal Navy submarines with over a hundred lives, and damage to another five British warships.
March 23 » First World War: On the third day of the German Spring Offensive, the 10th Battalion of the Royal West Kent Regiment is annihilated with many of the men becoming prisoners of war
March 27 » The National Council of Bessarabia proclaims union with the Kingdom of Romania.
September 28 » World War I: The Fifth Battle of Ypres begins.
October 1 » World War I: The Egyptian Expeditionary Force captures Damascus.
November 10 » The Western Union Cable Office in North Sydney, Nova Scotia, receives a top-secret coded message from Europe (that would be sent to Ottawa and Washington, D.C.) that said on November 11, 1918, all fighting would cease on land, sea and in the air.
Day of death February 10, 1966
The temperature on February 10, 1966 was between -4.2 °C and -0.5 °C and averaged -2.0 °C. There was 5.0 mm of rain during 5.1 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
January 17 » Palomares incident: A B-52 bomber collides with a KC-135 Stratotanker over Spain, killing seven airmen, and dropping three 70-kiloton nuclear bombs near the town of Palomares and another one into the sea.
February 14 » Australian currency is decimalized.
March 4 » In an interview in the London Evening Standard, The Beatles' John Lennon declares that the band is "more popular than Jesus now".
March 31 » The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
October 4 » Basutoland becomes independent from the United Kingdom and is renamed Lesotho.
December 5 » The musical I Do! I Do!, starring Mary Martin and Robert Preston opens at the 46th Street Theatre, in New York City, and closes on June 15, 1968, after 560 performances.
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/I302.php : accessed February 21, 2026), "Margaretha Johanna Opperman (1895-1966)".
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