May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage September 9, 1921
The temperature on September 9, 1921 was between 10.0 °C and 26.2 °C and averaged 17.8 °C. There was 10.9 hours of sunshine (83%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 17 » The Second Polish Republic adopts the March Constitution.
October 5 » The World Series is the first to be broadcast on radio.
October 18 » The Crimean Autonomous Soviet Socialist Republic is formed as part of the Russian Soviet Federative Socialist Republic.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
October 29 » The Link River Dam, a part of the Klamath Reclamation Project, is completed.
November 14 » The Communist Party of Spain is founded, and issues the first edition of Mundo obrero.
Day of death February 12, 1972
The temperature on February 12, 1972 was between 2.9 °C and 6.7 °C and averaged 4.7 °C. There was 2.9 mm of rain during 2.5 hours. There was 0.6 hours of sunshine (6%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. 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.
March 3 » Mohawk Airlines Flight 405 crashes as a result of a control malfunction and insufficient training in emergency procedures.
September 21 » Philippine President Ferdinand Marcos begins authoritarian rule by declaring martial law.
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 11 » Apollo 17 becomes the sixth and final Apollo mission to land on the Moon.
December 13 » Apollo program: Eugene Cernan and Harrison Schmitt begin the third and final extra-vehicular activity (EVA) or "Moonwalk" of Apollo 17. To date they are the last humans to set foot on the Moon.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I79575.php : accessed October 1, 2026), "Antje Holtrop (1897-1972)".
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