January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
February 27 » Fußball-Club Bayern München is founded.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
June 14 » Hawaii becomes a United States territory.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
Day of marriage November 19, 1937
The temperature on November 19, 1937 was between 0.9 °C and 9.6 °C and averaged 4.9 °C. There was 2.5 mm of rain during 2.4 hours. There was 0.6 hours of sunshine (7%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
March 8 » Spanish Civil War: The Battle of Guadalajara begins.
May 6 » Hindenburg disaster: The German zeppelin Hindenburg catches fire and is destroyed within a minute while attempting to dock at Lakehurst, New Jersey. Thirty-six people are killed.
September 5 » Spanish Civil War: Llanes falls to the Nationalists following a one-day siege.
September 21 » J. R. R. Tolkien's The Hobbit is published.
October 9 » Murder of 9 Catholic priests in Zhengding, China, who protected the local population from the advancing Japanese army.
December 21 » Snow White and the Seven Dwarfs, the world's first full-length animated feature, premieres at the Carthay Circle Theatre.
Day of death June 24, 1971
The temperature on June 24, 1971 was between 8.7 °C and 20.8 °C and averaged 14.8 °C. There was 9.6 hours of sunshine (57%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. Source: KNMI
January 25 » Charles Manson and three female "Family" members are found guilty of the 1969 Tate–LaBianca murders.
May 26 » Bangladesh Liberation War: The Pakistan Army slaughters at least 71 Hindus in Burunga, Sylhet, Bangladesh.
June 7 » The Alcohol, Tobacco, and Firearms Division of the U.S. Internal Revenue Service raids the home of Ken Ballew for illegal possession of hand grenades.
July 11 » Copper mines in Chile are nationalized.
August 15 » President Richard Nixon completes the break from the gold standard by ending convertibility of the United States dollar into gold by foreign investors.
August 27 » An attempted coup d'état fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations.
Day of burial June 29, 1971
The temperature on June 29, 1971 was between 9.1 °C and 17.8 °C and averaged 13.7 °C. There was 12.2 hours of sunshine (73%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
March 12 » The 1971 Turkish military memorandum is sent to the Süleyman Demirel government of Turkey and the government resigns.
March 25 » The Army of the Republic of Vietnam abandon an attempt to cut off the Ho Chi Minh trail in Laos.
July 11 » Copper mines in Chile are nationalized.
August 15 » Bahrain gains independence from the United Kingdom.
August 27 » An attempted coup d'état fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations.
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/I2729.php : accessed March 12, 2026), "Maria Joanna Berlo (1900-1971)".
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