The temperature on May 11, 1890 was about 13.8 °C. There was 2 mm of rain. The air pressure was 5 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 78%. Source: KNMI
January 1 » Eritrea is consolidated into a colony by the Italian government.
January 22 » The United Mine Workers of America is founded in Columbus, Ohio.
January 25 » Nellie Bly completes her round-the-world journey in 72 days.
April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
October 1 » Yosemite National Park is established by the U.S. Congress.
December 30 » Following the Wounded Knee Massacre, the United States Army and Lakota warriors face off in the Drexel Mission Fight.
Day of marriage May 24, 1911
The temperature on May 24, 1911 was between 9.7 °C and 15.4 °C and averaged 13.1 °C. There was 0.6 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
August 14 » United States Senate leaders agree to rotate the office of President pro tempore of the Senate among leading candidates to fill the vacancy left by William P. Frye's death.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
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.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of death September 28, 1969
The temperature on September 28, 1969 was between 2.2 °C and 15.3 °C and averaged 9.6 °C. There was 9.9 hours of sunshine (83%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
March 19 » The 385-metre-tall (1,263ft) TV-mast at Emley Moor transmitting station, United Kingdom, collapses due to ice build-up.
April 3 » Vietnam War: United States Secretary of Defense Melvin Laird announces that the United States will start to "Vietnamize" the war effort.
May 26 » Apollo program: Apollo 10 returns to Earth after a successful eight-day test of all the components needed for the forthcoming first manned moon landing.
October 9 » In Chicago, the National Guard is called in as demonstrations continue over the trial of the "Chicago Eight".
October 21 » The 1969 Somali coup d'état establishes a Marxist–Leninist administration.
November 13 » Vietnam War: Anti-war protesters in Washington, D.C. stage a symbolic March Against Death.
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/I76399.php : accessed January 1, 2026), "Hendrik Johan Zwart (1890-1969)".
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