January 1 » New York, New York annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25 by Staten Island to create the modern city of five boroughs.
February 15 » The battleship USSMaine explodes and sinks in Havana harbor in Cuba, killing 274. This event leads the United States to declare war on Spain.
March 16 » In Melbourne the representatives of five colonies adopted a constitution, which would become the basis of the Commonwealth of Australia.
April 25 » Spanish–American War: The United States declares war on Spain.
June 10 » Spanish–American War: In the Battle of Guantánamo Bay, U.S. Marines begin the American invasion of Spanish-held Cuba.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
Day of marriage September 15, 1917
The temperature on September 15, 1917 was between 5.9 °C and 19.5 °C and averaged 12.7 °C. There was 0.1 mm of rain. There was 9.7 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
June 4 » The first Pulitzer Prizes are awarded: Laura E. Richards, Maude H. Elliott, and Florence Hall receive the first Pulitzer for biography (for Julia Ward Howe). Jean Jules Jusserand receives the first Pulitzer for history for his work With Americans of Past and Present Days. Herbert B. Swope receives the first Pulitzer for journalism for his work for the New York World.
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
August 28 » Ten Suffragettes are arrested while picketing the White House.
November 2 » The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
November 25 » World War I: German forces defeat Portuguese army of about 1,200 at Negomano on the border of modern-day Mozambique and Tanzania.
Day of death January 25, 1963
The temperature on January 25, 1963 was between -8.5 °C and 0.1 °C and averaged -2.3 °C. There was 0.6 hours of sunshine (7%). The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west. Source: KNMI
January 22 » The Élysée Treaty of cooperation between France and Germany is signed by Charles de Gaulle and Konrad Adenauer.
January 29 » The first inductees into the Pro Football Hall of Fame are announced.
April 21 » The first election of the Universal House of Justice is held, marking its establishment as the supreme governing institution of the Bahá'í Faith.
May 30 » A protest against pro-Catholic discrimination during the Buddhist crisis is held outside South Vietnam's National Assembly, the first open demonstration during the eight-year rule of Ngo Dinh Diem.
June 21 » Cardinal Giovanni Battista Montini is elected as Pope Paul VI.
August 22 » X-15 Flight 91 reaches the highest altitude of the X-15 program (107.96km (67.08mi) (354,200 feet)).
When copying data from this family tree, please include a reference to the origin: Tjitze Koster, "Family tree Koster Twijslerheide e.o.", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster/I1277.php : accessed February 19, 2026), "Sjoerd Mijnheer (1898-1963)".
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