April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 14 » James Cash Penney opens his first store in Kemmerer, Wyoming.
April 20 » Pierre and Marie Curie refine radium chloride.
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.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
Day of marriage September 8, 1939
The temperature on September 8, 1939 was between 14.0 °C and 25.6 °C and averaged 19.5 °C. There was 9.7 hours of sunshine (73%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
May 14 » Lina Medina becomes the youngest confirmed mother in medical history at the age of five.
May 17 » The Columbia Lions and the Princeton Tigers play in the United States' first televised sporting event, a collegiate baseball game in New York City.
September 2 » World War II: Following the start of the invasion of Poland the previous day, the Free City of Danzig (now Gdańsk, Poland) is annexed by Nazi Germany.
September 9 » World War II: The Battle of Hel begins, the longest-defended pocket of Polish Army resistance during the German invasion of Poland.
September 17 » World War II: The Soviet invasion of Poland begins.
September 22 » World War II: A joint German–Soviet military parade in Brest-Litovsk is held to celebrate the successful invasion of Poland.
Day of death November 16, 1980
The temperature on November 16, 1980 was between 10.3 °C and 13.7 °C and averaged 12.2 °C. There was 1.3 mm of rain during 1.6 hours. There was -0.1 hours of sunshine (0%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 27 » Silver Thursday: A steep fall in silver prices, resulting from the Hunt Brothers attempting to corner the market in silver, leads to panic on commodity and futures exchanges.
July 5 » Swedish tennis player Björn Borg wins his fifth Wimbledon final and becomes the first male tennis player to win the championships five times in a row (1976–1980).
July 19 » Opening of the Summer Olympics in Moscow.
September 30 » Ethernet specifications are published by Xerox working with Intel and Digital Equipment Corporation.
November 20 » Lake Peigneur drains into an underlying salt deposit. A misplaced Texaco oil probe had been drilled into the Diamond Crystal Salt Mine, causing water to flow down into the mine, eroding the edges of the hole.
November 23 » The 6.9 Mw Irpinia earthquake shakes southern Italy with a maximum Mercalli intensity of X (Extreme), killing 2,483–4,900, and injuring 7,700–8,934.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I8766.php : accessed March 6, 2026), "Willem Vinkes (1902-1980)".
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