The temperature on March 22, 1876 was about 2.0 °C. The air pressure was 1 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 83%. 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).
February 26 » Japan and Korea sign a treaty granting Japanese citizens extraterritoriality rights, opening three ports to Japanese trade, and ending Korea's status as a tributary state of Qing dynasty China.
March 10 » The first successful test of a telephone is made by Alexander Graham Bell.
May 10 » The Centennial Exposition is opened in Philadelphia.
November 17 » Pyotr Ilyich Tchaikovsky's "Slavonic March" is given its premiere performance in Moscow, Russia.
December 23 » First day of the Constantinople Conference which resulted in agreement for political reforms in the Balkans.
December 29 » The Ashtabula River railroad disaster occurs, leaving 64 injured and 92 dead at Ashtabula, Ohio.
Day of marriage May 31, 1895
The temperature on May 31, 1895 was about 22.9 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 61%. Source: KNMI
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
June 20 » The Kiel Canal, crossing the base of the Jutland peninsula and the busiest artificial waterway in the world, is officially opened.
June 28 » The United States Court of Private Land Claims rules James Reavis’s claim to Barony of Arizona is "wholly fictitious and fraudulent."
October 21 » The Republic of Formosa collapses as Japanese forces invade.
October 22 » In Paris an express train derails after overrunning the buffer stop, crossing almost 30 metres (100ft) of concourse before crashing through a wall and falling 10 metres (33ft) to the road below.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of death July 21, 1961
The temperature on July 21, 1961 was between 12.9 °C and 15.8 °C and averaged 14.2 °C. There was 0.5 mm of rain during 0.9 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
February 14 » Discovery of the chemical elements: Element 103, Lawrencium, is first synthesized at the University of California.
March 14 » A USAF B-52 bomber crashes near near Yuba City, California whilst carrying nuclear weapons.
May 4 » American civil rights movement: The "Freedom Riders" begin a bus trip through the South.
July 23 » The Sandinista National Liberation Front is founded in Nicaragua.
August 13 » Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started.
December 9 » Tanganyika becomes independent from Britain.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I46079.php : accessed February 16, 2026), "Ties Jan Koek (1876-1961)".
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