In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 23 » The French Riviera is hit by a large earthquake, killing around 2,000.
April 28 » A week after being arrested by the Prussian Secret Police, French police inspector Guillaume Schnaebelé is released on order of William I, German Emperor, defusing a possible war.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
October 1 » Balochistan is conquered by the British Empire.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.
Day of marriage April 20, 1915
The temperature on April 20, 1915 was between 3.3 °C and 12.7 °C and averaged 8.3 °C. There was 1.9 hours of sunshine (13%). 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.
March 20 » Albert Einstein publishes his general theory of relativity.
April 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
April 22 » The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
May 9 » World War I: Second Battle of Artois between German and French forces.
September 12 » French soldiers rescue over 4,000 Armenian Genocide survivors stranded on Musa Dagh.
October 13 » First World War: The Battle of the Hohenzollern Redoubt marks the end of the Battle of Loos.
Day of death June 27, 1959
The temperature on June 27, 1959 was between 13.6 °C and 21.5 °C and averaged 17.0 °C. There was 4.1 mm of rain during 2.3 hours. There was 2.4 hours of sunshine (14%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 6 » Jack Kilby of Texas Instruments files the first patent for an integrated circuit.
March 18 » The Hawaii Admission Act is signed into law.
April 9 » Project Mercury: NASA announces the selection of the United States' first seven astronauts, whom the news media quickly dub the "Mercury Seven".
May 19 » The North Vietnamese Army establishes Group 559, whose responsibility is to determine how to maintain supply lines to South Vietnam; the resulting route is the Ho Chi Minh trail.
August 7 » Explorer program: Explorer 6 launches from the Atlantic Missile Range in Cape Canaveral, Florida.
August 11 » Sheremetyevo International Airport, the second-largest airport in Russia, opens.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I13788.php : accessed February 2, 2026), "Lukas Gerhardus Dreyer (1887-1959)".
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