March 22 » Before the Société pour L'Encouragement à l'Industrie, brothers Auguste and Louis Lumière demonstrate movie film technology publicly for the first time.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
June 27 » The inaugural run of the Baltimore and Ohio Railroad's Royal Blue from Washington, D.C., to New York City, the first U.S. passenger train to use electric locomotives.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
October 22 » In Paris an express train derails after overrunning the buffer stop, crossing almost 30 metres (100ft) of concourse before crashing through a wall and falling 10 metres (33ft) to the road below.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage August 1, 1917
The temperature on August 1, 1917 was between 13.2 °C and 17.3 °C and averaged 15.3 °C. There was 62.3 mm of rain. The average windspeed was 4 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.
January 17 » The United States pays Denmark $25 million for the Virgin Islands.
February 5 » The Congress of the United States passes the Immigration Act of 1917 over President Woodrow Wilson's veto.
February 5 » The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
April 2 » World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
July 20 » World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia.
September 14 » The Russian Empire is formally replaced by the Russian Republic.
Day of death December 5, 1944
The temperature on December 5, 1944 was between 3.4 °C and 7.1 °C and averaged 5.1 °C. There was 1.5 mm of rain during 1.3 hours. There was 3.3 hours of sunshine (41%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. 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.
June 4 » World War II: The United States Fifth Army captures Rome, although much of the German Fourteenth Army is able to withdraw to the north.
August 4 » The Holocaust: A tip from a Dutch informer leads the Gestapo to a sealed-off area in an Amsterdam warehouse, where they find and arrest Jewish diarist Anne Frank, her family, and four others.
August 25 » World War II: Paris is liberated by the Allies.
October 18 » World War II: The state funeral of Field Marshal Erwin Rommel takes place in Ulm Germany.
December 22 » World War II: The Vietnam People's Army is formed to resist Japanese occupation of Indochina, now Vietnam.
December 30 » King George II of Greece declares a regency, leaving the throne vacant.
When copying data from this family tree, please include a reference to the origin: Berkhout, "Family tree Berkhout", database, Genealogy Online (https://www.genealogieonline.nl/berkhout-stamboom/I294.php : accessed January 28, 2026), "jacob van keulen (1895-1944)".
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