The temperature on May 21, 1889 was about 21.9 °C. The air pressure was 8 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 56%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
February 9 » US president Grover Cleveland signs a bill elevating the United States Department of Agriculture to a Cabinet-level agency.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
September 23 » Nintendo Koppai (Later Nintendo Company, Limited) is founded by Fusajiro Yamauchi to produce and market the playing card game Hanafuda.
November 8 » Montana is admitted as the 41st U.S. state.
November 23 » The first jukebox goes into operation at the Palais Royale Saloon in San Francisco.
Day of death January 10, 1971
The temperature on January 10, 1971 was between -0.9 °C and 7.9 °C and averaged 2.5 °C. There was -0.1 mm of rain. There was 5.9 hours of sunshine (73%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 31 » The Winter Soldier Investigation, organized by the Vietnam Veterans Against the War to publicize war crimes and atrocities by Americans and allies in Vietnam, begins in Detroit.
March 12 » The 1971 Turkish military memorandum is sent to the Süleyman Demirel government of Turkey and the government resigns.
July 31 » Apollo program: Apollo 15 astronauts become the first to ride in a lunar rover.
September 15 » The first Greenpeace ship sets sail to protest against nuclear testing on Amchitka Island.
November 14 » Mariner 9 enters orbit around Mars.
December 5 » Battle of Gazipur: Pakistani forces stand defeated as India cedes Gazipur to Bangladesh.
Day of burial January 13, 1971
The temperature on January 13, 1971 was between -0.8 °C and 6.3 °C and averaged 2.2 °C. There was 0.2 mm of rain. There was 2.5 hours of sunshine (31%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east. Source: KNMI
September 20 » Having weakened after making landfall in Nicaragua the previous day, Hurricane Irene regains enough strength to be renamed Hurricane Olivia, making it the first known hurricane to cross from the Atlantic Ocean into the Pacific.
October 25 » The People's Republic of China replaces the Republic of China at the United Nations.
October 28 » Prospero becomes the only British satellite to be launched by a British rocket.
November 15 » Intel releases the world's first commercial single-chip microprocessor, the 4004.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
December 3 » Indo-Pakistani War of 1971: Pakistan launches a pre-emptive strike against India and a full-scale war begins.
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/I87418.php : accessed December 29, 2025), "Elsje Hendrika Pot (1889-1971)".
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