March 19 » Auguste and Louis Lumière record their first footage using their newly patented cinematograph.
April 6 » Oscar Wilde is arrested in the Cadogan Hotel, London, after losing a libel case against the Marquess of Queensberry.
April 17 » The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
October 8 » Korean Empress Myeongseong is assassinated by Japanese infiltrators.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
Day of marriage August 30, 1917
The temperature on August 30, 1917 was between 12.2 °C and 16.8 °C and averaged 14.7 °C. There was 3.6 mm of rain. There was 1.3 hours of sunshine (9%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-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.
January 31 » World War I: Germany announces that its U-boats will resume unrestricted submarine warfare after a two-year hiatus.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
June 26 » World War I: The American Expeditionary Forces begin to arrive in France. They will first enter combat four months later.
July 6 » World War I: Arabian troops led by T. E. Lawrence ("Lawrence of Arabia") and Auda ibu Tayi capture Aqaba from the Ottoman Empire during the Arab Revolt.
July 25 » Sir Robert Borden introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%).
Day of death December 2, 1971
The temperature on December 2, 1971 was between 1.7 °C and 6.2 °C and averaged 4.0 °C. There was -0.1 mm of rain. There was 0.6 hours of sunshine (7%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
February 9 » Apollo program: Apollo 14 returns to Earth after the third manned Moon landing.
May 27 » Pakistani forces massacre over 200 civilians, mostly Bengali Hindus, in the Bagbati massacre.
July 30 » Apollo program: Apollo 15 Mission: David Scott and James Irwin on the Apollo Lunar Module Falcon land on the Moon with the first Lunar Rover.
August 15 » President Richard Nixon completes the break from the gold standard by ending convertibility of the United States dollar into gold by foreign investors.
October 21 » A gas explosion kills 22 people at a shopping centre near Glasgow, Scotland.
December 14 » Bangladesh Liberation War: Over 200 of East Pakistan's intellectuals are executed by the Pakistan Army and their local allies. (The date is commemorated in Bangladesh as Martyred Intellectuals Day.)
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/I85644.php : accessed February 6, 2026), "Johanna van Os (1895-1971)".
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