February 27 » King George I of Greece survives an assassination attempt.
April 21 » Spanish–American War: The United States Navy begins a blockade of Cuban ports. When the U.S. Congress issued a declaration of war on April 25, it declared that a state of war had existed from this date.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
August 28 » Caleb Bradham's beverage "Brad's Drink" is renamed "Pepsi-Cola".
September 13 » Hannibal Goodwin patents celluloid photographic film.
Day of marriage July 18, 1917
The temperature on July 18, 1917 was between 13.9 °C and 19.4 °C and averaged 17.5 °C. There was 8.6 mm of rain. There was 0.5 hours of sunshine (3%). The average windspeed was 3 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.
May 21 » The Imperial War Graves Commission is established through royal charter to mark, record, and maintain the graves and places of commemoration of the British Empire's military forces.
June 7 » World War I: Battle of Messines: Allied soldiers detonate a series of mines underneath German trenches at Messines Ridge, killing 10,000 German troops.
August 6 » World War I: Battle of Mărășești between the Romanian and German armies begins.
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
December 6 » World War I: USSJacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SMU-53.
Day of death October 17, 1968
The temperature on October 17, 1968 was between 5.6 °C and 14.0 °C and averaged 9.9 °C. There was 7.1 mm of rain during 2.2 hours. There was 0.4 hours of sunshine (4%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
July 23 » The only successful hijacking of an El Al aircraft takes place when a Boeing 707 carrying ten crew and 38 passengers is taken over by three members of the Popular Front for the Liberation of Palestine. The aircraft was en route from Rome, to Lod, Israel.
August 21 » James Anderson Jr. posthumously receives the first Medal of Honor to be awarded to an African American U.S. Marine.
September 2 » Operation OAU begins during the Nigerian Civil War.
October 14 » The first live TV broadcast by American astronauts in orbit is performed by the Apollo 7 crew.
November 17 » Viewers of the Raiders–Jets football game in the eastern United States are denied the opportunity to watch its exciting finish when NBC broadcasts Heidi instead, prompting changes to sports broadcasting in the U.S.
December 9 » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the computer mouse, hypertext, and the bit-mapped graphical user interface using the oN-Line System (NLS).
Day of burial October 21, 1968
The temperature on October 21, 1968 was between 5.7 °C and 15.7 °C and averaged 9.7 °C. There was 6.1 hours of sunshine (59%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. Source: KNMI
March 12 » Mauritius achieves independence from the United Kingdom.
June 5 » Presidential candidate Robert F. Kennedy is assassinated by Sirhan Sirhan.
August 21 » James Anderson Jr. posthumously receives the first Medal of Honor to be awarded to an African American U.S. Marine.
October 16 » Tommie Smith and John Carlos are ejected from the US Olympic team for participating in the Olympics Black Power salute.
December 9 » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the computer mouse, hypertext, and the bit-mapped graphical user interface using the oN-Line System (NLS).
December 22 » Cultural Revolution: People's Daily posted the instructions of Mao Zedong that "The intellectual youth must go to the country, and will be educated from living in rural poverty."
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I79338.php : accessed January 23, 2026), "Jannetje Schroef (1898-1968)".
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