The temperature on February 21, 1911 was between 1.3 °C and 7.4 °C and averaged 4.6 °C. There was 3.1 mm of rain. There was 1.7 hours of sunshine (16%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 6 » During the Battle of Deçiq, Dedë Gjon Luli Dedvukaj, leader of the Malësori Albanians, raises the Albanian flag in the town of Tuzi, Montenegro, for the first time after George Kastrioti (Skanderbeg).
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
Day of death May 28, 1979
The temperature on May 28, 1979 was between 7.5 °C and 18.9 °C and averaged 14.6 °C. There was 10.6 hours of sunshine (65%). 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 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.
July 11 » America's first space station, Skylab, is destroyed as it re-enters the Earth's atmosphere over the Indian Ocean.
July 19 » The Sandinista rebels overthrow the government of the Somoza family in Nicaragua.
July 25 » In accord with the Egypt–Israel Peace Treaty, Israel begins its withdrawal from the Sinai Peninsula.
October 17 » Mother Teresa is awarded the Nobel Peace Prize.
December 3 » Ayatollah Ruhollah Khomeini becomes the first Supreme Leader of Iran.
December 21 » Lancaster House Agreement: An independence agreement for Rhodesia is signed in London by Lord Carrington, Sir Ian Gilmour, Robert Mugabe, Joshua Nkomo, Bishop Abel Muzorewa and S.C. Mundawarara.
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/I118877.php : accessed February 15, 2026), "Trientje Couperus (1911-1979)".
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