The temperature on December 6, 1914 was between 1.0 °C and 6.8 °C and averaged 3.9 °C. There was 0.6 mm of rain. There was 2.4 hours of sunshine (30%). 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.
February 13 » Copyright: In New York City the American Society of Composers, Authors and Publishers is established to protect the copyrighted musical compositions of its members.
June 23 » Mexican Revolution: Pancho Villa takes Zacatecas from Victoriano Huerta.
August 1 » The German Empire declares war on the Russian Empire at the opening of World War I. The Swiss Army mobilizes because of World War I.
August 17 » World War I: Battle of Stallupönen: The German army of General Hermann von François defeats the Russian force commanded by Paul von Rennenkampf near modern-day Nesterov, Russia.
August 28 » World War I: German troops take the city of Namur in Belgium.
November 13 » Zaian War: Berber tribesmen inflict the heaviest defeat of French forces in Morocco at the Battle of El Herri.
Day of death June 30, 1943
The temperature on June 30, 1943 was between 11.7 °C and 20.9 °C and averaged 16.1 °C. There was 2.2 mm of rain during 0.3 hours. There was 7.5 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 18 » Warsaw Ghetto Uprising: The first uprising of Jews in the Warsaw Ghetto.
February 3 » The SSDorchester is sunk by a German U-boat. Only 230 of 902 men aboard survive.
March 4 » World War II: The Battle of the Bismarck Sea in the south-west Pacific comes to an end.
August 17 » World War II: The U.S. Seventh Army under General George S. Patton arrives in Messina, Italy, followed several hours later by the British 8th Army under Field Marshal Bernard Montgomery, thus completing the Allied conquest of Sicily.
August 23 » World War II: Kharkiv is liberated by the Soviet Union after the Battle of Kursk.
December 5 » World War II: Allied air forces begin attacking Germany's secret weapons bases in Operation Crossbow.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I579162.php : accessed January 23, 2026), "Roelof Johan Jacobs (1914-1943)".
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