The temperature on June 17, 1889 was about 18.1 °C. The air pressure was 6 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 66%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 22 » Columbia Phonograph is formed in Washington, D.C.
May 11 » An attack upon a U.S. Army paymaster and escort results in the theft of over $28,000 and the award of two Medals of Honor.
July 11 » Tijuana, Mexico, is founded.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
Day of marriage February 7, 1912
The temperature on February 7, 1912 was between 4.4 °C and 9.6 °C and averaged 6.2 °C. There was 2.7 mm of rain. There was 3.3 hours of sunshine (35%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 8 » The African National Congress is founded, under the name South African Native National Congress (SANNC).
January 17 » British polar explorer Captain Robert Falcon Scott reaches the South Pole, one month after Roald Amundsen.
February 12 » The Xuantong Emperor, the last Emperor of China, abdicates.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
August 6 » The Bull Moose Party meets at the Chicago Coliseum.
September 25 » Columbia University Graduate School of Journalism is founded in New York City.
Day of death June 18, 1975
The temperature on June 18, 1975 was between 10.9 °C and 19.6 °C and averaged 15.1 °C. There was -0.1 mm of rain. There was 4.3 hours of sunshine (26%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
March 11 » Vietnam War: North Vietnamese and Viet Cong guerrilla forces establish control over Buôn Ma Thuột commune from the South Vietnamese army.
April 9 » The first game of the Philippine Basketball Association, the second oldest professional basketball league in the world.
April 17 » The Cambodian Civil War ends. The Khmer Rouge captures the capital Phnom Penh and Cambodian government forces surrender.
April 21 » Vietnam War: President of South Vietnam Nguyễn Văn Thiệu flees Saigon, as Xuân Lộc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.
July 6 » The Comoros declares independence from France.
November 27 » The Provisional IRA assassinates Ross McWhirter, after a press conference in which McWhirter had announced a reward for the capture of those responsible for multiple bombings and shootings across England.
When copying data from this family tree, please include a reference to the origin: Dirk Ham, "Family tree Ham en Dallinga", database, Genealogy Online (https://www.genealogieonline.nl/ham-stamboom/I4604.php : accessed February 22, 2026), "Rommert Groeneveld (1889-1975)".
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