March 2 » The U.S. Congress passes the Platt Amendment limiting the autonomy of Cuba, as a condition of the withdrawal of American troops.
August 5 » Peter O'Connor sets the first IAAF recognised long jump world record of 24ft 11.75in (7.6137m), a record that would stand for 20 years.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
September 28 » Philippine–American War: Filipino guerrillas kill more than forty American soldiers while losing 28 of their own.
October 24 » Annie Edson Taylor becomes the first person to go over Niagara Falls in a barrel.
November 18 » Britain and the United States sign the Hay–Pauncefote Treaty, which nullifies the Clayton–Bulwer Treaty and withdraws British objections to an American-controlled canal in Panama.
Day of death August 20, 1977
The temperature on August 20, 1977 was between 12.0 °C and 19.0 °C and averaged 14.9 °C. There was 5.1 mm of rain during 2.7 hours. There was 4.2 hours of sunshine (29%). The heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 24 » The Atocha massacre occurs in Madrid during the Spanish transition to democracy.
April 21 » Annie opens on Broadway.
September 7 » The Torrijos–Carter Treaties between Panama and the United States on the status of the Panama Canal are signed. The United States agrees to transfer control of the canal to Panama at the end of the 20th century.
October 17 » The hijacked Lufthansa Flight 181 lands in Mogadishu. The remaining hostages are later rescued.
December 5 » Egypt breaks diplomatic relations with Syria, Libya, Algeria, Iraq and South Yemen. The move is in retaliation for the Declaration of Tripoli against Egypt.
December 13 » Air Indiana Flight 216 crashes near Evansville Regional Airport, killing 29, including the University of Evansville basketball team, support staff, and boosters of the team.
When copying data from this family tree, please include a reference to the origin: Keith Mann Spencer, "Mann Spencer Tree", database, Genealogy Online (https://www.genealogieonline.nl/mann-spencer-tree/P73.php : accessed February 1, 2026), "Beatrice M Mann (1901-1977)".
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