The temperature on April 30, 1890 was about 9.9 °C. The air pressure was 1 kgf/m2 and came mainly from the east-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. Source: KNMI
June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
July 2 » The U.S. Congress passes the Sherman Antitrust Act.
July 10 » Wyoming is admitted as the 44th U.S. state.
August 6 » At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair.
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 September 21, 1912
The temperature on September 21, 1912 was between 2.5 °C and 15.1 °C and averaged 9.0 °C. There was 9.5 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
January 23 » The International Opium Convention is signed at The Hague.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
April 20 » Opening day for baseball's Tiger Stadium in Detroit, and Fenway Park in Boston.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
December 3 » Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with the Ottoman Empire, temporarily halting the First Balkan War. (The armistice will expire on February 3, 1913, and hostilities will resume.)
Day of death April 26, 1971
The temperature on April 26, 1971 was between -3.3 °C and 9.4 °C and averaged 4.9 °C. There was 2.0 mm of rain during 3.0 hours. There was 7.2 hours of sunshine (49%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 25 » Idi Amin leads a coup deposing Milton Obote and becomes Uganda's president.
March 26 » East Pakistan declares its independence from Pakistan to form Bangladesh and the Bangladesh Liberation War begins.
June 30 » The crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve.
August 22 » J. Edgar Hoover and John Mitchell announce the arrest of 20 of the Camden 28.
November 23 » Representatives of the People's Republic of China attend the United Nations, including the United Nations Security Council, for the first time.
December 4 » The Indian Navy attacks the Pakistan Navy and Karachi.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I167110.php : accessed October 15, 2026), "Jan Dam (1890-1971)".
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