The temperature on November 4, 1915 was between 2.1 °C and 9.7 °C and averaged 5.2 °C. There was 0.6 mm of rain. There was 3.3 hours of sunshine (35%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 19 » Georges Claude patents the neon discharge tube for use in advertising.
January 25 » Alexander Graham Bell inaugurates U.S. transcontinental telephone service, speaking from New York to Thomas Watson in San Francisco.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
May 24 » World War I: Italy declares war on Austria-Hungary, joining the conflict on the side of the Allies.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of marriage June 30, 1945
The temperature on June 30, 1945 was between 12.2 °C and 18.2 °C and averaged 15.0 °C. There was 2.8 mm of rain during 1.9 hours. There was 10.1 hours of sunshine (60%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from February 23, 1945 to June 24, 1945 the cabinet Gerbrandy III, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
March 19 » World War II: Off the coast of Japan, a dive bomber hits the aircraft carrier USSFranklin, killing 724 of her crew. Badly damaged, the ship is able to return to the US under her own power.
April 13 » World War II: German troops kill more than 1,000 political and military prisoners in Gardelegen, Germany.
July 16 » World War II: The heavy cruiser USSIndianapolis leaves San Francisco with parts for the atomic bomb "Little Boy" bound for Tinian Island.
July 30 » World War II: Japanese submarineI-58 sinks the USSIndianapolis, killing 883 seamen. Most die during the following four days, until an aircraft notices the survivors.
August 16 » The National Representatives' Congress, the precursor of the current National Assembly of Vietnam, convenes in Sơn Dương.
September 18 » General Douglas MacArthur moves his command headquarters to Tokyo.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I88416.php : accessed March 4, 2026), "Jan Henderikus Potze (1915-± 1993)".
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