The temperature on September 11, 1912 was between 7.3 °C and 14.4 °C and averaged 10.5 °C. There was 18.2 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
February 12 » The Xuantong Emperor, the last Emperor of China, abdicates.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
October 7 » The Helsinki Stock Exchange sees its first transaction.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of death August 9, 1914
The temperature on August 9, 1914 was between 14.6 °C and 24.3 °C and averaged 18.5 °C. There was 7.7 hours of sunshine (51%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
May 17 » The Protocol of Corfu is signed, recognising full autonomy to Northern Epirus under nominal Albanian sovereignty.
August 6 » World War I: First Battle of the Atlantic: Two days after the United Kingdom had declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea.
August 23 » World War I: The British Expeditionary Force and the French Fifth Army begin their Great Retreat before the German Army.
September 17 » World War I: The Race to the Sea begins.
September 22 » A German submarine sinks three British cruisers over a seventy-minute period, killing almost 1500 sailors.
December 14 » Lisandro de la Torre and others found the Democratic Progressive Party (Partido Demócrata Progresista, PDP) at the Hotel Savoy, Buenos Aires, Argentina.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I44770.php : accessed January 23, 2026), "Jannetje Leijenhorst (1912-1914)".
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