The temperature on September 29, 1911 was between 2.7 °C and 14.7 °C and averaged 8.6 °C. There was 4.3 mm of rain. There was 4.1 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
September 24 » His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
Day of marriage June 29, 1943
The temperature on June 29, 1943 was between 11.6 °C and 17.4 °C and averaged 14.1 °C. There was 0.1 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. 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.
January 11 » Italian-American anarchist Carlo Tresca is assassinated in New York City.
January 24 » World War II: Franklin D. Roosevelt and Winston Churchill conclude a conference in Casablanca.
February 23 » A fire breaks out at Saint Joseph's Orphanage, County Cavan, Ireland, killing 35 children and one adult.
March 4 » World War II: The Battle of Fardykambos, one of the first major battles between the Greek Resistance and the occupying Royal Italian Army, begins. It ends on 6 March with the surrender of an entire Italian battalion and the liberation of the town of Grevena.
October 1 » World War II: After the Four Days of Naples, Allied troops enter the city.
December 24 » World War II: U.S. General Dwight D. Eisenhower is named Supreme Allied Commander for the Invasion of Normandy.
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/I39005.php : accessed March 16, 2026), "Jan Weinand de Jonge (1911-)".
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