The temperature on June 13, 1953 was between 12.3 °C and 20.2 °C and averaged 15.4 °C. There was 46.7 mm of rain during 4.5 hours. There was 1.9 hours of sunshine (11%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
February 28 » James Watson and Francis Crick announce to friends that they have determined the chemical structure of DNA; the formal announcement takes place on April 25 following publication in April's Nature (pub. April 2).
April 25 » Francis Crick and James Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA.
August 17 » Addiction: First meeting of Narcotics Anonymous takes place, in Southern California.
October 1 » A Mutual Defense Treaty Between the United States and the Republic of Korea is concluded in Washington, D.C.
December 6 » Vladimir Nabokov completes his controversial novel Lolita.
December 10 » British Prime Minister Winston Churchill receives the Nobel Prize in literature.
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/I182685.php : accessed October 19, 2026), "Bernardus van der Ploeg (± 1938-1953)".
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