The temperature on February 18, 1931 was between -1.8 °C and 0.8 °C and averaged 0.4 °C. There was 4.1 mm of rain during 4.7 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 21 » Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia.
March 3 » The United States adopts The Star-Spangled Banner as its national anthem.
March 31 » A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
March 31 » An earthquake in Nicaragua destroys Managua; killing 2,000.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
October 17 » Al Capone is convicted of income tax evasion.
Day of marriage July 28, 1953
The temperature on July 28, 1953 was between 9.0 °C and 20.5 °C and averaged 15.7 °C. There was 8.4 hours of sunshine (53%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
April 24 » Winston Churchill is knighted by Queen Elizabeth II.
April 25 » Francis Crick and James Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA.
May 18 » Jackie Cochran becomes the first woman to break the sound barrier.
July 7 » Ernesto "Che" Guevara sets out on a trip through Bolivia, Peru, Ecuador, Panama, Costa Rica, Nicaragua, Honduras, and El Salvador.
August 12 » The first testing of a real thermonuclear weapon (not test devices): The Soviet atomic bomb project continues with the detonation of "RDS-6s" (Joe 4), the first Soviet thermonuclear bomb.
October 30 » President Eisenhower approves the top-secret document NSC 162/2 concerning the maintenance of a strong nuclear deterrent force against the Soviet Union.
Day of death December 7, 1985
The temperature on December 7, 1985 was between 5.7 °C and 10.3 °C and averaged 8.7 °C. There was 4.0 mm of rain during 3.8 hours. There was 1.5 hours of sunshine (19%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
May 5 » Ronald Reagan visits the military cemetery at Bitburg and the site of the Bergen-Belsen concentration camp, where he makes a speech.
May 13 » Police bombed MOVE headquarters in Philadelphia, killing six adults and five children, and destroying the homes of 250 city residents.
June 19 » Members of the Revolutionary Party of Central American Workers, dressed as Salvadoran soldiers, attack the Zona Rosa area of San Salvador.
August 12 » Japan Airlines Flight 123 crashes into Osutaka ridge in Gunma Prefecture, Japan, killing 520, to become the worst single-plane air disaster.
September 13 » Super Mario Bros. is released in Japan for the NES, which starts the Super Mario series of platforming games.
November 9 » Garry Kasparov, 22, of the Soviet Union becomes the youngest World Chess Champion by beating fellow Soviet Anatoly Karpov.
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/I74282.php : accessed February 16, 2026), "Ephemia Maria Gezina Wittendorp (1931-1985)".
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