The temperature on June 25, 1911 was between 10.5 °C and 19.1 °C and averaged 14.1 °C. There was 4.5 mm of rain. There was 9.5 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
January 15 » Palestinian Arabic-language Falastin newspaper founded.
May 15 » In Standard Oil Co. of New Jersey v. United States, the United States Supreme Court declares Standard Oil to be an "unreasonable" monopoly under the Sherman Antitrust Act and orders the company to be broken up.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
Day of marriage May 10, 1937
The temperature on May 10, 1937 was between 7.9 °C and 18.0 °C and averaged 12.9 °C. There was 4.9 hours of sunshine (32%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
February 21 » The League of Nations bans foreign national "volunteers" in the Spanish Civil War.
March 18 » The New London School explosion in New London, Texas, kills 300 people, mostly children.
August 1 » Josip Broz Tito reads the resolution "Manifesto of constitutional congress of KPH" to the constitutive congress of KPH (Croatian Communist Party) in woods near Samobor.
August 13 » Second Sino-Japanese War: The Battle of Shanghai begins.
August 14 » The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when six Japanese bombers are shot down by Chinese fighters while raiding Chinese air bases.
September 22 » Spanish Civil War: Peña Blanca is taken, ending the Battle of El Mazuco.
Day of death September 12, 1989
The temperature on September 12, 1989 was between 12.5 °C and 23.1 °C and averaged 17.7 °C. There was 27.5 mm of rain during 2.4 hours. There was 5.7 hours of sunshine (44%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 3 » A military coup overthrows Alfredo Stroessner, dictator of Paraguay since 1954.
August 20 » The pleasure boat Marchioness sinks on the River Thames following a collision. Fifty-one people are killed.
November 27 » Avianca Flight 203: A Boeing 727 explodes in mid-air over Colombia, killing all 107 people on board and three people on the ground. The Medellín Cartel will claim responsibility for the attack.
December 13 » The Troubles: Attack on Derryard checkpoint: The Provisional Irish Republican Army launches an attack on a British Army temporary vehicle checkpoint near Rosslea, Northern Ireland. Two British soldiers are killed and two others are wounded.
December 16 » Romanian Revolution: Protests break out in Timișoara, Romania, in response to an attempt by the government to evict dissident Hungarian pastor László Tőkés.
December 16 » U.S. Appeals Court Judge Robert Smith Vance is assassinated by a mail bomb sent by Walter Leroy Moody, Jr.
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/I3408.php : accessed March 16, 2026), "Monica (Minke) Hettinga (1911-1989)".
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