The temperature on July 11, 1913 was between 7.1 °C and 20.1 °C and averaged 14.4 °C. There was 11.2 hours of sunshine (68%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
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.
March 22 » Mystic Phan Xích Long, the self-proclaimed Emperor of Vietnam, was arrested for organising a revolt against the colonial rule of French Indochina, which was nevertheless carried out by his supporters the following day.
June 1 » The Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
June 24 » Greece and Serbia annul their alliance with Bulgaria.
July 12 » Serbian forces begin their siege of the Bulgarian city of Vidin; the siege is later called off when the war ends.
November 5 » King Otto of Bavaria is deposed by his cousin, Prince Regent Ludwig, who assumes the title Ludwig III.
December 21 » Arthur Wynne's "word-cross", the first crossword puzzle, is published in the New York World.
Day of death June 29, 1981
The temperature on June 29, 1981 was between 9.0 °C and 12.6 °C and averaged 11.3 °C. There was 8.4 mm of rain during 10.1 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 8 » A local farmer reports a UFO sighting in Trans-en-Provence, France, claimed to be "perhaps the most completely and carefully documented sighting of all time".
January 15 » Pope John Paul II receives a delegation from Solidarity (Polish trade union) at the Vatican led by Lech Wałęsa.
February 6 » The National Resistance Army of Uganda launches an attack on a Ugandan Army installation in the central Mubende District to begin the Ugandan Bush War.
February 23 » In Spain, Antonio Tejero attempts a coup d'état by capturing the Spanish Congress of Deputies.
August 1 » MTV begins broadcasting in the United States and airs its first video, "Video Killed the Radio Star" by The Buggles.
December 18 » First flight of the Russian heavy strategic bomber Tu-160, the world's largest combat aircraft, largest supersonic aircraft and largest variable-sweep wing aircraft built.
When copying data from this family tree, please include a reference to the origin: Hans Dunning, "Family tree Dunning", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dunning/R5667.php : accessed February 1, 2026), "Jan van der Sleen (1913-1981)".
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