The temperature on August 20, 1890 was about 18.1 °C. There was 0.2 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 84%. Source: KNMI
January 22 » The United Mine Workers of America is founded in Columbus, Ohio.
July 2 » The U.S. Congress passes the Sherman Antitrust Act.
August 7 » Anna Månsdotter became the last woman to be executed in Sweden for the 1889 Yngsjö murder.
September 12 » Salisbury, Rhodesia, is founded.
September 25 » The United States Congress establishes Sequoia National Park.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
Day of marriage November 9, 1911
The temperature on November 9, 1911 was between 2.7 °C and 9.4 °C and averaged 5.9 °C. There was 1.4 mm of rain. There was 4.8 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
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.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
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.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
Day of death December 15, 1960
The temperature on December 15, 1960 was between -1.4 °C and 0.8 °C and averaged -0.3 °C. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
February 1 » Four black students stage the first of the Greensboro sit-ins at a lunch counter in Greensboro, North Carolina.
May 16 » Theodore Maiman operates the first optical laser (a ruby laser), at Hughes Research Laboratories in Malibu, California.
August 9 » South Kasai secedes from the Congo.
August 13 » The Central African Republic declares independence from France.
August 20 » Senegal breaks from the Mali Federation, declaring its independence.
November 3 » The land that would become the Great Swamp National Wildlife Refuge was established by an Act of Congress after a year-long legal battle that pitted local residents against Port Authority of New York and New Jersey officials wishing to turn the Great Swamp into a major regional airport for jet aircraft.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I79293.php : accessed January 29, 2026), "Geert Kloppenburg (1890-1960)".
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