The temperature on June 20, 1881 was about 20.9 °C. The air pressure was 3 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 62%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
April 16 » In Dodge City, Kansas, Bat Masterson fights his last gun battle.
May 21 » The American Red Cross is established by Clara Barton in Washington, D.C.
July 1 » General Order 70, the culmination of the Cardwell and Childers reforms of the British Army, comes into effect.
July 2 » Charles J. Guiteau shoots and fatally wounds U.S. President James A. Garfield (who will die of complications from his wounds on September 19).
July 23 » The Boundary Treaty of 1881 between Chile and Argentina is signed in Buenos Aires.
October 13 » First known conversation in modern Hebrew by Eliezer Ben-Yehuda and friends.
Day of marriage August 21, 1912
The temperature on August 21, 1912 was between 10.5 °C and 15.5 °C and averaged 13.1 °C. There was 5.8 mm of rain. There was 7.0 hours of sunshine (49%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
April 14 » The British passenger liner RMSTitanic hits an iceberg in the North Atlantic at 23:40 (sinks morning of April 15th).
May 5 » Pravda, the "voice" of the Communist Party of the Soviet Union, begins publication in Saint Petersburg.
May 18 » The first Indian film, Shree Pundalik by Dadasaheb Torne, is released in Mumbai.
August 14 » U.S. Marines invade Nicaragua to support the U.S.-backed government installed there after José Santos Zelaya had resigned three years earlier.
October 7 » The Helsinki Stock Exchange sees its first transaction.
Day of death August 29, 1964
The temperature on August 29, 1964 was between 8.7 °C and 17.6 °C and averaged 14.6 °C. There was 0.1 mm of rain during 0.2 hours. There was 8.6 hours of sunshine (62%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
March 1 » Villarrica Volcano begins a strombolian eruption causing lahars that destroy half of the town of Coñaripe.
May 2 » First ascent of Shishapangma, the fourteenth highest mountain in the world and the lowest of the Eight-thousanders.
May 2 » Vietnam War: An explosion sinks the American aircraft carrier USNS Card while it is docked at Saigon. Two Viet Cong combat swimmers had placed explosives on the ship's hull. She is raised and returned to service less than seven months later.
May 20 » Discovery of the cosmic microwave background radiation by Robert Woodrow Wilson and Arno Penzias.
August 19 » Syncom 3, the first geostationary communication satellite, was launched.
September 21 » The North American XB-70 Valkyrie, the world's fastest bomber, makes its maiden flight from Palmdale, California.
When copying data from this family tree, please include a reference to the origin: Rob van Koert, "Family tree Van Koert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-koert/I43390.php : accessed January 12, 2026), "Helena Maria Post (1881-1964)".
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