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.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
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.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
October 1 » Balochistan is conquered by the British Empire.
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.
January 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
March 20 » Albert Einstein publishes his general theory of relativity.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
July 7 » The First Battle of the Isonzo comes to an end.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
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 10 » Tibetan uprising: Fearing an abduction attempt by China, thousands of Tibetans surround the Dalai Lama's palace to prevent his removal.
April 8 » A team of computer manufacturers, users, and university people led by Grace Hopper meets to discuss the creation of a new programming language that would be called COBOL.
June 9 » The USSGeorge Washington is launched. It is the first nuclear-powered ballistic missile submarine.
June 23 » Convicted Manhattan Project spy Klaus Fuchs is released after only nine years in prison and allowed to emigrate to Dresden, East Germany where he resumes a scientific career.
December 13 » Archbishop Makarios III becomes the first President of Cyprus.
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 1, 2026), "Lukas Gerhardus Dreyer (1887-1959)".
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