February 14 » The United States Department of Commerce and Labor is established (later split into the Department of Commerce and the Department of Labor).
April 26 » Atlético Madrid Association football club is founded
August 18 » German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
November 17 » The Russian Social Democratic Labour Party splits into two groups: The Bolsheviks (Russian for "majority") and Mensheviks (Russian for "minority").
December 14 » The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina.
Day of death August 13, 1981
The temperature on August 13, 1981 was between 10.7 °C and 23.8 °C and averaged 17.8 °C. There was 3.6 hours of sunshine (24%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the ??. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 19 » Iran hostage crisis: United States and Iranian officials sign an agreement to release 52 American hostages after 14 months of captivity.
March 27 » The Solidarity movement in Poland stages a warning strike, in which at least 12 million Poles walk off their jobs for four hours.
May 13 » Mehmet Ali Ağca attempts to assassinate Pope John Paul II in St. Peter's Square in Rome. The Pope is rushed to the Agostino Gemelli University Polyclinic to undergo emergency surgery and survives.
June 24 » The Humber Bridge opens to traffic, connecting Yorkshire and Lincolnshire. It remained the world's longest bridge span for 17years.
June 25 » Microsoft is restructured to become an incorporated business in its home state of Washington.
September 26 » Nolan Ryan sets a Major League record by throwing his fifth no-hitter.
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/I139119.php : accessed February 13, 2026), "Pieter Ladenius (1903-1981)".
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