The temperature on May 17, 1940 was between 2.7 °C and 17.2 °C and averaged 11.1 °C. There was 11.5 hours of sunshine (73%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
July 25 » General Henri Guisan orders the Swiss Army to resist German invasion and makes surrender illegal.
August 5 » World War II: The Soviet Union formally annexes Latvia.
August 18 » World War II: The Hardest Day air battle, part of the Battle of Britain. At that point, the largest aerial engagement in history with heavy losses sustained on both sides.
September 6 » King Carol II of Romania abdicates and is succeeded by his son Michael. General Ion Antonescu becomes the Conducător of Romania.
November 7 » In Tacoma, Washington, the original Tacoma Narrows Bridge collapses in a windstorm, a mere four months after the bridge's completion.
November 20 » World War II: Hungary becomes a signatory of the Tripartite Pact, officially joining the Axis powers.
Day of marriage December 30, 1959
The temperature on December 30, 1959 was between 5.1 °C and 10.6 °C and averaged 8.3 °C. There was 2.8 hours of sunshine (36%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 2 » Nine experienced ski hikers in the northern Ural Mountains in the Soviet Union die under mysterious circumstances.
February 6 » At Cape Canaveral, Florida, the first successful test firing of a Titan intercontinental ballistic missile is accomplished.
February 6 » Jack Kilby of Texas Instruments files the first patent for an integrated circuit.
February 9 » The R-7 Semyorka, the first intercontinental ballistic missile, becomes operational at Plesetsk, USSR.
August 7 » Explorer program: Explorer 6 launches from the Atlantic Missile Range in Cape Canaveral, Florida.
September 27 » Typhoon Vera kills nearly 5,000 people in Japan.
Day of death December 22, 2000
The temperature on December 22, 2000 was between -4.7 °C and 1.0 °C and averaged -2.3 °C. There was 6.6 hours of sunshine (85%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
January 14 » A United Nations tribunal sentences five Roman Catholic Bosnian Croats to up to 25 years in prison for the 1993 killing of more than 100 Bosnian Muslims.
May 11 » Second Chechen War: Chechen separatists ambush Russian paramilitary forces in the Republic of Ingushetia.
May 25 » Liberation Day of Lebanon: Israel withdraws its army from Lebanese territory (with the exception of the disputed Shebaa farms zone) 18 years after the invasion of 1982.
November 1 » Chhattisgarh officially becomes the 26th state of India, formed from sixteen districts of eastern Madhya Pradesh.
November 13 » Philippine House Speaker Manny Villar passes the articles of impeachment against Philippine President Joseph Estrada.
November 30 » NASA launches STS-97, the 101st Space Shuttle mission.
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/I699.php : accessed January 5, 2026), "Wouterus Gerardus Johannes "Walter" Opperman (1940-2000)".
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