The temperature on February 25, 1884 was about 4.0 °C. The air pressure was 1 kgf/m2 and came mainly from the west-northwest. The airpressure was 75 cm mercury. The atmospheric humidity was 97%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
July 5 » Germany takes possession of Cameroon.
August 5 » The cornerstone for the Statue of Liberty is laid on Bedloe's Island (now Liberty Island) in New York Harbor.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
Day of marriage November 30, 1907
The temperature on November 30, 1907 was between -0.9 °C and 9.1 °C and averaged 3.8 °C. There was 5.0 hours of sunshine (61%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
April 15 » Triangle Fraternity is founded at the University of Illinois at Urbana–Champaign.
June 14 » The National Association for Women's Suffrage succeeds in getting Norwegian women the right to vote in parliamentary elections.
July 21 » The passenger steamer SS Columbia sinks after colliding with the steam schooner San Pedro off Shelter Cove, California, killing 88 people.
August 31 » Russia and the United Kingdom sign the Anglo-Russian Convention, by which the UK recognizes Russian preeminence in northern Persia, while Russia recognizes British preeminence in southeastern Persia and Afghanistan. Both powers pledge not to interfere in Tibet.
September 26 » Four months after the 1907 Imperial Conference, New Zealand and Newfoundland are promoted from colonies to dominions within the British Empire.
December 8 » King Gustaf V of Sweden accedes to the Swedish throne.
Day of death July 21, 1968
The temperature on July 21, 1968 was between 11.1 °C and 19.1 °C and averaged 15.2 °C. There was 6.8 hours of sunshine (42%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
September 15 » The Soviet Zond 5 spaceship is launched, becoming the first spacecraft to fly around the Moon and re-enter the Earth's atmosphere.
October 2 » Mexican President Gustavo Díaz Ordaz orders soldiers to suppress a demonstration of unarmed students, ten days before the start of the 1968 Summer Olympics.
October 16 » Kingston, Jamaica is rocked by the Rodney riots, inspired by the barring of Walter Rodney from the country.
October 16 » Tommie Smith and John Carlos are ejected from the US Olympic team for participating in the Olympics Black Power salute.
November 5 » Richard Nixon is elected as 37th President of the United States.
December 9 » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the computer mouse, hypertext, and the bit-mapped graphical user interface using the oN-Line System (NLS).
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I104455.php : accessed March 3, 2026), "Maria Oltmans (1884-1968)".
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