The temperature on April 6, 1877 was about 13.1 °C. The air pressure was 8 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 61%. 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).
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
January 8 » Crazy Horse and his warriors fight their last battle against the United States Cavalry at Wolf Mountain, Montana Territory.
May 6 » Chief Crazy Horse of the Oglala Lakota surrenders to United States troops in Nebraska.
May 9 » A magnitude 8.8 earthquake off the coast of Peru kills 2,541, including some as far away as Hawaii and Japan.
September 5 » American Indian Wars: Oglala Sioux chief Crazy Horse is bayoneted by a United States soldier after resisting confinement in a guardhouse at Fort Robinson in Nebraska.
September 24 » The Battle of Shiroyama is a decisive victory of the Imperial Japanese Army over the Satsuma Rebellion.
November 29 » Thomas Edison demonstrates his phonograph for the first time.
Day of death April 12, 1951
The temperature on April 12, 1951 was between -0.4 °C and 11.0 °C and averaged 6.6 °C. There was 0.2 mm of rain. There was 3.4 hours of sunshine (25%). The partly or heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
In The Netherlands , there was from March 15, 1951 to September 2, 1952 the cabinet Drees I, with Dr. W. Drees (PvdA) as prime minister.
January 27 » Nuclear testing at the Nevada Test Site begins with Operation Ranger.
March 31 » Remington Rand delivers the first UNIVAC I computer to the United States Census Bureau.
May 16 » The first regularly scheduled transatlantic flights begin between Idlewild Airport (now John F Kennedy International Airport) in New York City and Heathrow Airport in London, operated by El Al Israel Airlines.
June 14 » UNIVAC I is dedicated by the U.S. Census Bureau.
October 16 » The first Prime Minister of Pakistan, Liaquat Ali Khan, is assassinated in Rawalpindi.
December 22 » The Selangor Labour Party is founded in Selangor, Malaya.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3379.php : accessed January 9, 2026), "Johannes Hettinga (1877-1951)".
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