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 3 » A gun battle in the East End of London left two dead and sparked a political row over the involvement of then-Home Secretary Winston Churchill.
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
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
January 20 » Franklin D. Roosevelt and John Nance Garner are sworn in for their second terms as U.S. President and U.S. Vice President; it is the first time a Presidential Inauguration takes place on January 20 since the 20th Amendment changed the dates of presidential terms.
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
March 21 » Ponce massacre: Nineteen people in Ponce, Puerto Rico are gunned down by police acting on orders of the US-appointed Governor, Blanton C. Winship.
June 11 » Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders.
July 29 » Tōngzhōu Incident: In Tōngzhōu, China, the East Hopei Army attacks Japanese troops and civilians.
December 29 » The Irish Free State is replaced by a new state called Ireland with the adoption of a new constitution.
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.
April 26 » People's Daily publishes the April 26 Editorial which inflames the nascent Tiananmen Square protests.
July 5 » Iran–Contra affair: Oliver North is sentenced by U.S. District Judge Gerhard A. Gesell to a three-year suspended prison term, two years probation, $150,000 in fines and 1,200 hours community service. His convictions are later overturned.
July 20 » Burma's ruling junta puts opposition leader Daw Aung San Suu Kyi under house arrest.
September 8 » Partnair Flight 394 dives into the North Sea, killing 55 people. The investigation showed that the tail of the plane vibrated loose in flight due to sub-standard connecting bolts that had been fraudulently sold as aircraft-grade.
September 13 » Largest anti-Apartheid march in South Africa, led by Desmond Tutu.
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.
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 January 25, 2026), "Monica (Minke) Hettinga (1911-1989)".
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