April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 20 » Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
December 14 » The Commercial Pacific Cable Company lays the first Pacific telegraph cable, from San Francisco to Honolulu.
Day of death June 18, 1973
The temperature on June 18, 1973 was between 10.8 °C and 22.5 °C and averaged 17.1 °C. There was -0.1 mm of rain. There was 13.8 hours of sunshine (82%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
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 4 » A Lockheed C-141 Starlifter, dubbed the Hanoi Taxi, makes the last flight of Operation Homecoming.
April 6 » Launch of Pioneer 11 spacecraft.
April 19 » The Portuguese Socialist Party is founded in the German town of Bad Münstereifel.
September 24 » Guinea-Bissau declares its independence from Portugal.
October 20 » "Saturday Night Massacre": United States President Richard Nixon fires U.S. Attorney General Elliot Richardson and Deputy Attorney General William Ruckelshaus after they refuse to fire special prosecutor Archibald Cox, who is finally fired by Robert Bork.
November 22 » The Italian Fascist organization Ordine Nuovo is disbanded.
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/I169725.php : accessed October 16, 2026), "Albertus Hartman (1902-1973)".
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