The temperature on June 10, 1890 was about 18.7 °C. The air pressure was 1 kgf/m2 and came mainly from the east-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 52%. Source: KNMI
March 20 » Prime Minister of the German Empire Otto von Bismarck is dismissed by Emperor Wilhelm II.
April 7 » Completion of the first Lake Biwa Canal.
July 10 » Wyoming is admitted as the 44th U.S. state.
September 12 » Salisbury, Rhodesia, is founded.
November 4 » City and South London Railway: London's first deep-level tube railway opens between King William Street and Stockwell.
November 23 » King William III of the Netherlands dies without a male heir and a special law is passed to allow his daughter Princess Wilhelmina to succeed him.
Day of marriage May 18, 1940
The temperature on May 18, 1940 was between 8.5 °C and 19.2 °C and averaged 13.4 °C. There was 9.9 hours of sunshine (63%). 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.
June 4 » World War II: The Dunkirk evacuation ends: British forces complete evacuation of 338,000 troops from Dunkirk in France. To rally the morale of the country, Winston Churchill delivers, only to the House of Commons, his famous "We shall fight on the beaches" speech.
June 8 » World War II: The completion of Operation Alphabet, the evacuation of Allied forces from Narvik at the end of the Norwegian Campaign.
June 23 » Henry Larsen begins the first successful west-to-east navigation of Northwest Passage from Vancouver, British Columbia, Canada.
August 8 » The "Aufbau Ost" directive is signed by Wilhelm Keitel.
September 9 » Treznea Massacre in Transylvania.
October 16 » Holocaust in Poland: The Warsaw Ghetto is established.
Day of death December 23, 1966
The temperature on December 23, 1966 was between 3.8 °C and 8.8 °C and averaged 6.9 °C. There was 1.3 mm of rain during 1.9 hours. The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
May 15 » After a policy dispute, Prime Minister Nguyễn Cao Kỳ of South Vietnam's ruling junta launches a military attack on the forces of General Tôn Thất Đính, forcing him to abandon his command.
August 16 » Vietnam War: The House Un-American Activities Committee begins investigations of Americans who have aided the Viet Cong. The committee intends to introduce legislation making these activities illegal. Anti-war demonstrators disrupt the meeting and 50 people are arrested.
October 9 » Vietnam War: South Korean troops commit the Binh Tai Massacre.
November 11 » NASA launches Gemini 12.
November 15 » A Boeing 727 carrying Pan Am Flight 708 crashes near Berlin, Germany, killing all three people on board.
December 27 » The Cave of Swallows, the largest known cave shaft in the world, is discovered in Aquismón, San Luis Potosí, Mexico.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I18408.php : accessed January 25, 2026), "Schalk Willem Theron (1890-1966)".
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