The temperature on June 15, 1953 was between 11.7 °C and 18.9 °C and averaged 15.0 °C. There was 1.6 mm of rain during 1.1 hours. There was 4.6 hours of sunshine (28%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
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.
June 2 » The coronation of Queen Elizabeth II, who is crowned Queen of the United Kingdom, Canada, Australia, New Zealand and Her Other Realms and Territories & Head of the Commonwealth, the first major international event to be televised.
June 18 » A United States Air Force C-124 crashes and burns near Tachikawa, Japan, killing 129.
June 18 » The Egyptian revolution of 1952 ends with the overthrow of the Muhammad Ali dynasty and the declaration of the Republic of Egypt.
August 17 » Addiction: First meeting of Narcotics Anonymous takes place, in Southern California.
August 19 » Cold War: The CIA and MI6 help to overthrow the government of Mohammad Mosaddegh in Iran and reinstate the Shah Mohammad Reza Pahlavi.
Day of death May 12, 1975
The temperature on May 12, 1975 was between 3.2 °C and 14.1 °C and averaged 9.5 °C. There was -0.1 mm of rain. There was 9.8 hours of sunshine (63%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
April 2 » Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops.
June 1 » The Patriotic Union of Kurdistan was founded by Jalal Talabani, Nawshirwan Mustafa, Fuad Masum and others.
June 5 » The Suez Canal opens for the first time since the Six-Day War.
July 31 » The Troubles: Three members of a popular cabaret band and two gunmen are killed during a botched paramilitary attack in Northern Ireland.
September 28 » The Spaghetti House siege, in which nine people are taken hostage, takes place in London.
November 11 » Australian constitutional crisis of 1975: Australian Governor-General Sir John Kerr dismisses the government of Gough Whitlam, appoints Malcolm Fraser as caretaker Prime Minister and announces a general election to be held in early December.
When copying data from this family tree, please include a reference to the origin: Guido Davus , "Jannis family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-jannis/I4232.php : accessed January 24, 2026), "Clement Mertens (1953-1975)".
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