The temperature on December 14, 1915 was between 0.9 °C and 4.2 °C and averaged 2.6 °C. There was 1.7 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. 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.
March 20 » Albert Einstein publishes his general theory of relativity.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
June 29 » The North Saskatchewan River flood of 1915 is the worst flood in Edmonton history.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
September 5 » The pacifist Zimmerwald Conference begins.
Day of death June 25, 1999
The temperature on June 25, 1999 was between 6.4 °C and 19.9 °C and averaged 14.3 °C. There was 15.5 hours of sunshine (93%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 3 » The Mars Polar Lander is launched by NASA.
April 9 » Kosovo War: The Battle of Košare begins.
April 20 » Columbine High School massacre: Eric Harris and Dylan Klebold kill 13 people and injure 24 others before committing suicide at Columbine High School in Columbine, Colorado.
October 12 » The World Population reaches 6 billion.
December 3 » NASA loses radio contact with the Mars Polar Lander moments before the spacecraft enters the Martian atmosphere.
December 26 » The storm Lothar sweeps across Central Europe, killing 137 and causing US$1.3 billion in damage.
When copying data from this family tree, please include a reference to the origin: Andre Schwitzner, "Schwitzner family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-schwitzner/I99.php : accessed February 15, 2026), "Berta Schwitzner (1915-1999)".
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