January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
March 2 » In New York City the Martha Washington Hotel opens, becoming the first hotel exclusively for women.
June 16 » Roald Amundsen leaves Oslo, Norway, to commence the first east–west navigation of the Northwest Passage.
August 18 » German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.
October 13 » The Boston Red Sox win the first modern World Series, defeating the Pittsburgh Pirates in the eighth game.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
Day of death May 16, 1971
The temperature on May 16, 1971 was between 11.4 °C and 18.2 °C and averaged 13.9 °C. There was 16.9 mm of rain during 5.4 hours. There was 2.2 hours of sunshine (14%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
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/I138928.php : accessed December 28, 2025), "Jan Krommenhoek (1903-1971)".
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