March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
May 17 » Second Boer War: British troops relieve Mafeking.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 25 » The United Kingdom annexes the Transvaal.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage February 14, 1931
The temperature on February 14, 1931 was between -0.1 °C and 7.2 °C and averaged 2.1 °C. There was 0.2 mm of rain during 0.2 hours. There was 5.4 hours of sunshine (55%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 13 » The British Raj completes its transfer from Calcutta to New Delhi.
April 14 » The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic.
July 1 » United Airlines begins service (as Boeing Air Transport).
July 16 » Emperor Haile Selassie signs the first constitution of Ethiopia.
October 21 » A secret society in the Imperial Japanese Army launches an abortive coup d'état attempt.
December 5 » Cathedral of Christ the Saviour in Moscow was destroyed on orders from Joseph Stalin.
Day of death April 11, 1972
The temperature on April 11, 1972 was between 3.1 °C and 11.7 °C and averaged 6.5 °C. There was 2.4 mm of rain during 2.3 hours. There was 2.9 hours of sunshine (21%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
March 2 » The Pioneer 10 space probe is launched from Cape Canaveral, Florida with a mission to explore the outer planets.
April 20 » Apollo program: Apollo 16 lunar module, commanded by John Young and piloted by Charles Duke, lands on the moon.
May 21 » Michelangelo's Pietà in St. Peter's Basilica in Rome is damaged by a vandal, the mentally disturbed Hungarian geologist Laszlo Toth.
August 16 » In an unsuccessful coup d'état attempt, the Royal Moroccan Air Force fires upon Hassan II of Morocco's plane while he is traveling back to Rabat.
November 10 » Southern Airways Flight 49 from Birmingham, Alabama is hijacked and, at one point, is threatened with crashing into the nuclear installation at the Oak Ridge National Laboratory. After two days, the plane lands in Havana, Cuba, where the hijackers are jailed by Fidel Castro.
December 29 » Eastern Air Lines Flight 401 (a Lockheed L-1011 TriStar) crashes in the Florida Everglades on approach to Miami International Airport, Florida, killing 101 of the 176 people on board.
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/I6813.php : accessed January 20, 2026), "Andrew Peter (Andries Petrus) Dreyer b4c2d5e3f1g6 (1900-1972)".
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