February 23 » Cuba leases Guantánamo Bay to the United States "in perpetuity".
March 2 » In New York City the Martha Washington Hotel opens, becoming the first hotel exclusively for women.
July 4 » The Philippine–American War is officially concluded.
August 29 » The Slava, the last of the five Borodino-class battleships, is launched.
November 17 » The Russian Social Democratic Labour Party splits into two groups: The Bolsheviks (Russian for "majority") and Mensheviks (Russian for "minority").
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
Day of death September 23, 1961
The temperature on September 23, 1961 was between 14.9 °C and 23.5 °C and averaged 17.7 °C. There was 4.0 hours of sunshine (33%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
April 30 » K-19, the first Soviet nuclear submarine equipped with nuclear missiles, is commissioned.
May 30 » The long-time Dominican dictator Rafael Trujillo is assassinated in Santo Domingo, Dominican Republic.
May 31 » The South African Constitution of 1961 becomes effective, thus creating the Republic of South Africa, which remains outside the Commonwealth of Nations until 1 June 1994, when South Africa is returned to Commonwealth membership.
August 13 » Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started.
August 15 » Border guard Conrad Schumann flees from East Germany while on duty guarding the construction of the Berlin Wall.
September 18 » CONCACAF is established as the governing body for association football in North America, Central America and the Caribbean.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I451.php : accessed September 27, 2026), "August Bernard Riské (1903-1961)".
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