The temperature on October 7, 1875 was about 15.8 °C. The air pressure was 16 kgf/m2 and came mainly from the west-southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 75%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
March 3 » The first ever organized indoor game of ice hockey is played in Montreal, Quebec, Canada as recorded in the Montreal Gazette.
April 4 » Vltava, composed by Czech composer Bedřich Smetana and also known by its German name Die Moldau, premiered in Prague.
June 19 » The Herzegovinian rebellion against the Ottoman Empire begins.
September 27 » The merchant sailing ship Ellen Southard is wrecked in a storm at Liverpool.
October 22 » First telegraphic connection in Argentina.
December 4 » Notorious New York City politician Boss Tweed escapes from prison; he is later recaptured in Spain.
Day of death April 27, 1961
The temperature on April 27, 1961 was between 8.9 °C and 15.0 °C and averaged 11.2 °C. There was 4.5 mm of rain during 2.4 hours. There was 3.2 hours of sunshine (22%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
February 3 » The United States Air Forces begins Operation Looking Glass, and over the next 30 years, a "Doomsday Plane" is always in the air, with the capability of taking direct control of the United States' bombers and missiles in the event of the destruction of the SAC's command post.
May 19 » Venera program: Venera 1 becomes the first man-made object to fly by another planet by passing Venus (the probe had lost contact with Earth a month earlier and did not send back any data).
May 21 » American civil rights movement: Alabama Governor John Malcolm Patterson declares martial law in an attempt to restore order after race riots break out.
June 23 » The Antarctic Treaty System, which sets aside Antarctica as a scientific preserve and limits military activity on the continent, its islands and ice shelves, comes into force.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
November 18 » United States President John F. Kennedy sends 18,000 military advisors to South Vietnam.
Day of cremation May 2, 1961
The temperature on May 2, 1961 was between 10.0 °C and 16.1 °C and averaged 12.2 °C. There was 5.2 mm of rain during 3.9 hours. There was 5.1 hours of sunshine (34%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 27 » The first congress of the Spanish Trade Union Organisation is inaugurated.
June 19 » Kuwait declares independence from the United Kingdom.
September 10 » In the Italian Grand Prix, a crash causes the death of German Formula One driver Wolfgang von Trips and 13 spectators who are hit by his Ferrari, the deadliest accident in F1 history.
September 12 » The African and Malagasy Union is founded.
October 27 » NASA tests the first Saturn I rocket in Mission Saturn-Apollo 1.
November 21 » The "La Ronde" opens in Honolulu, first revolving restaurant in the United States.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I7324.php : accessed December 28, 2025), "LODEWIJK CORNELIS de GROOT (1875-1961)".
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