The temperature on July 30, 1913 was between 11.1 °C and 20.7 °C and averaged 16.0 °C. There was 11.6 hours of sunshine (74%). 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 3 » Thousands of women march in the Woman Suffrage Procession in Washington, D.C.
March 18 » King George I of Greece is assassinated in the recently liberated city of Thessaloniki.
April 8 » The 17th Amendment to the United States Constitution, requiring direct election of Senators, becomes law.
May 30 » The Treaty of London is signed, ending the First Balkan War; Albania becomes an independent nation.
June 1 » The Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
October 10 » U.S. President Wilson triggers the explosion of the Gamboa Dike, completing major construction on the Panama Canal.
Day of death June 18, 1915
The temperature on June 18, 1915 was between 4.7 °C and 16.6 °C and averaged 11.0 °C. There was 2.8 hours of sunshine (17%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
May 7 » The Republic of China accedes to 13 of the 21 Demands, extending the Empire of Japan's control over Manchuria and the Chinese economy.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
October 13 » First World War: The Battle of the Hohenzollern Redoubt marks the end of the Battle of Loos.
October 14 » World War I: Bulgaria joins the Central Powers.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I15574.php : accessed December 25, 2025), "Sophia Ludovica Julietta de Roeck (1913-1915)".
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