May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 16 » Roald Amundsen leaves Oslo, Norway, to commence the first east–west navigation of the Northwest Passage.
September 11 » The first race at the Milwaukee Mile in West Allis, Wisconsin is held. It is the oldest major speedway in the world.
October 13 » The Boston Red Sox win the first modern World Series, defeating the Pittsburgh Pirates in the eighth game.
December 14 » The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina.
December 17 » The Wright brothers make the first controlled powered, heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
Day of death October 20, 1969
The temperature on October 20, 1969 was between 4.2 °C and 20.3 °C and averaged 12.3 °C. There was 0.4 mm of rain during 0.6 hours. There was 6.4 hours of sunshine (61%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. Source: KNMI
January 5 » The Venera 5 space probe is launched at 06:28:08 UTC from Baikonur.
January 18 » United Airlines Flight 266 crashes into Santa Monica Bay killing all 32 passengers and six crew members.
March 3 » Apollo program: NASA launches Apollo 9 to test the lunar module.
July 21 » Apollo program: At 02:56 UTC, astronaut Neil Armstrong becomes the first person to walk on the Moon.
July 24 » Apollo program: Apollo 11 splashes down safely in the Pacific Ocean.
July 25 » Vietnam War: U.S. President Richard Nixon declares the Nixon Doctrine, stating that the United States now expects its Asian allies to take care of their own military defense. This is the start of the "Vietnamization" of the war.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I9961.php : accessed February 7, 2026), "Sieuwke Witteveen (1903-1969)".
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