The temperature on April 9, 1889 was about 12.2 °C. The air pressure was 4 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 64%. Source: KNMI
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
June 3 » The first long-distance electric power transmission line in the United States is completed, running 14 miles (23km) between a generator at Willamette Falls and downtown Portland, Oregon.
August 4 » The Great Fire of Spokane, Washington destroys some 32 blocks of the city, prompting a mass rebuilding project.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 23 » The first jukebox goes into operation at the Palais Royale Saloon in San Francisco.
Day of death April 25, 1963
The temperature on April 25, 1963 was between 5.8 °C and 9.1 °C and averaged 7.6 °C. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
April 30 » The Bristol Bus Boycott is held in Bristol to protest the Bristol Omnibus Company's refusal to employ Black or Asian bus crews, drawing national attention to racial discrimination in the United Kingdom.
May 15 » Project Mercury: The launch of the final Mercury mission, Mercury-Atlas 9 with astronaut Gordon Cooper on board. He becomes the first American to spend more than a day in space, and the last American to go into space alone.
July 1 » The British Government admits that former diplomat Kim Philby had worked as a Soviet agent.
July 1 » ZIP codes are introduced for United States mail.
July 26 » The Organisation for Economic Co-operation and Development votes to admit Japan.
October 9 » In Italy, a large landslide a causes a giant wave to overtop the Vajont Dam, killing over 2,000.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I492996.php : accessed January 6, 2026), "Jan Kampstra (1889-1963)".
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