The temperature on January 9, 1875 was about 1.6 °C. The air pressure was 2 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 85%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
March 3 » Georges Bizet's opera Carmen receives its première at the Opéra-Comique in Paris.
April 4 » Vltava, composed by Czech composer Bedřich Smetana and also known by its German name Die Moldau, premiered in Prague.
May 17 » Aristides wins the first Kentucky Derby with the jockey Oliver Lewis (2:37.75)
May 20 » Signing of the Metre Convention by 17 nations leading to the establishment of the International System of Units.
August 22 » The Treaty of Saint Petersburg between Japan and Russia is ratified, providing for the exchange of Sakhalin for the Kuril Islands.
October 22 » First telegraphic connection in Argentina.
Day of death January 12, 1969
The average temperature on January 12, 1969 was 3.0 °C. There was 1.0 mm of rain during 2.9 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
April 22 » The formation of the Communist Party of India (Marxist-Leninist) is announced at a mass rally in Calcutta.
July 16 » Apollo program: Apollo 11, the first mission to land astronauts on the Moon, is launched from the Kennedy Space Center at Cape Kennedy, Florida.
August 15 » The Woodstock Music & Art Fair opens in upstate New York, featuring some of the top rock musicians of the era.
November 19 » Apollo program: Apollo 12 astronauts Pete Conrad and Alan Bean land at Oceanus Procellarum (the "Ocean of Storms") and become the third and fourth humans to walk on the Moon.
December 17 » Project Blue Book: The United States Air Force closes its study of UFOs.
December 24 » Nigerian troops capture Umuahia, the Biafran capital.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I14543.php : accessed January 18, 2026), "Wilhelmus Hercules Viljoen (1875-1969)".
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