The temperature on July 19, 1953 was between 12.2 °C and 19.6 °C and averaged 16.1 °C. There was 0.5 mm of rain during 0.3 hours. There was 10.5 hours of sunshine (65%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
April 13 » CIA director Allen Dulles launches the mind-control program Project MKUltra.
May 18 » Jackie Cochran becomes the first woman to break the sound barrier.
May 29 » Edmund Hillary and Sherpa Tenzing Norgay become the first people to reach the summit of Mount Everest, on Tenzing Norgay's (adopted) 39th birthday.
July 17 » The largest number of United States midshipman casualties in a single event results from an aircraft crash in Florida, killing 44.
November 21 » The Natural History Museum, London announces that the "Piltdown Man" skull, initially believed to be one of the most important fossilized hominid skulls ever found, is a hoax.
December 24 » Tangiwai disaster: In New Zealand's North Island, at Tangiwai, a railway bridge is damaged by a lahar and collapses beneath a passenger train, killing 151 people.
When copying data from this family tree, please include a reference to the origin: Johan Beekman, "Family tree Beekman", database, Genealogy Online (https://www.genealogieonline.nl/beekman-stamboom/I22.php : accessed March 3, 2026), "Herma Johanna Beekman (1953-2021)".
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