The temperature on November 25, 1915 was between -0.1 °C and 6.3 °C and averaged 2.8 °C. There was 3.3 mm of rain. There was 0.4 hours of sunshine (5%). The average windspeed was 4 Bft (moderate breeze) 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 21 » Kiwanis International is founded in Detroit.
July 25 » RFC Captain Lanoe Hawker becomes the first British pursuit aviator to earn the Victoria Cross.
September 15 » The Empire Picture Theatre (now The New Empire Cinema), the oldest running cinema in mainland Australia, opens in Bowral, New South Wales.
September 25 » World War I: The Second Battle of Champagne begins.
October 12 » World War I: British nurse Edith Cavell is executed by a German firing squad for helping Allied soldiers escape from Belgium
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of marriage August 10, 1940
The temperature on August 10, 1940 was between 13.1 °C and 20.2 °C and averaged 16.2 °C. There was 1.0 mm of rain during 0.1 hours. There was 1.2 hours of sunshine (8%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
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.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
May 9 » World War II: The German submarine U-9 sinks the French coastal submarine Doris near Den Helder.
May 28 » World War II: Norwegian, French, Polish and British forces recapture Narvik in Norway. This is the first allied infantry victory of the War.
June 18 » Appeal of 18 June by Charles de Gaulle.
July 10 » World War II: Six days before Adolf Hitler issues his Directive 16 to the combined Wehrmacht armed forces for Operation Sea Lion, the Kanalkampf shipping attacks against British maritime convoys begin, in the leadup to initiating the Battle of Britain.
July 19 » Field Marshal Ceremony: First occasion in World War II that Adolf Hitler appoints field marshals due to military achievements.
November 25 » World War II: First flights of both the de Havilland Mosquito and Martin B-26 Marauder.
Day of death November 23, 1989
The temperature on November 23, 1989 was between -2.8 °C and 7.1 °C and averaged 3.3 °C. There was 2.0 mm of rain during 1.1 hours. There was 1.5 hours of sunshine (18%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 4 » Second Gulf of Sidra incident: A pair of Libyan MiG-23 "Floggers" are shot down by a pair of US Navy F-14 Tomcats during an air-to-air confrontation.
February 14 » Iranian leader Ruhollah Khomeini issues a fatwa encouraging Muslims to kill Salman Rushdie, author of The Satanic Verses.
June 16 » Revolutions of 1989: Imre Nagy, the former Hungarian prime minister, is reburied in Budapest following the collapse of Communism in Hungary.
July 17 » Holy See–Poland relations are restored.
August 19 » Polish president Wojciech Jaruzelski nominates Solidarity activist Tadeusz Mazowiecki to be the first non-communist prime minister in 42 years.
September 8 » Partnair Flight 394 dives into the North Sea, killing 55 people. The investigation showed that the tail of the plane vibrated loose in flight due to sub-standard connecting bolts that had been fraudulently sold as aircraft-grade.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I229899.php : accessed February 15, 2026), "Siefko Julius (1915-1989)".
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