The temperature on October 13, 1884 was about 8.9 °C. There was 2 mm of rain. The air pressure was 2 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 89%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 19 » More than sixty tornadoes strike the Southern United States, one of the largest tornado outbreaks in U.S. history.
March 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
July 3 » Dow Jones & Company publishes its first stock average.
December 6 » The Washington Monument in Washington, D.C., is completed.
Day of marriage May 28, 1904
The temperature on May 28, 1904 was between 10.9 °C and 19.8 °C and averaged 15.0 °C. There was 5.4 hours of sunshine (33%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 8 » Battle of Port Arthur: A surprise torpedo attack by the Japanese at Port Arthur, China starts the Russo-Japanese War.
February 9 » Russo-Japanese War: Battle of Port Arthur concludes.
April 8 » The French Third Republic and the United Kingdom of Great Britain and Ireland sign the Entente cordiale.
May 4 » The United States begins construction of the Panama Canal.
May 21 » The Fédération Internationale de Football Association (FIFA) is founded in Paris.
December 3 » The Jovian moon Himalia is discovered by Charles Dillon Perrine at California's Lick Observatory.
Day of death August 30, 1970
The temperature on August 30, 1970 was between 10.4 °C and 25.0 °C and averaged 17.4 °C. There was 11.0 hours of sunshine (80%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
March 10 » Vietnam War: Captain Ernest Medina is charged by the U.S. military with My Lai war crimes.
April 1 » The first of over 670,000 AMC Gremlins are released into North America to compete with foreign imported cars.
April 10 » Paul McCartney announces that he is leaving The Beatles for personal and professional reasons.
July 8 » Richard Nixon delivers a special congressional message enunciating Native American self-determination as official US Indian policy, leading to the Indian Self-Determination and Education Assistance Act of 1975.
July 21 » After 11 years of construction, the Aswan High Dam in Egypt is completed.
October 8 » Aleksandr Solzhenitsyn wins the Nobel Prize in literature.
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/I1625.php : accessed October 5, 2026), "Hielkje Koopmans (1884-1970)".
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