The temperature on December 3, 1870 was about 3.2 °C. There was 0.3 mm of rain. The air pressure was 5 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
January 6 » The inauguration of the Musikverein in Vienna, Austria.
February 15 » Stevens Institute of Technology is founded in New Jersey, USA and offers the first Bachelor of Engineering degree in Mechanical Engineering.
February 25 » Hiram Rhodes Revels, a Republican from Mississippi, is sworn into the United States Senate, becoming the first African American ever to sit in Congress.
July 1 » The United States Department of Justice formally comes into existence.
September 19 » Franco-Prussian War: The siege of Paris begins. The city will hold out for over four months before surrendering.
October 7 » Franco-Prussian War: Léon Gambetta escapes the siege of Paris in a hot-air balloon.
Day of marriage April 13, 1901
The temperature on April 13, 1901 was between 3.3 °C and 9.1 °C and averaged 5.8 °C. There was 7.3 hours of sunshine (53%). Source: KNMI
January 1 » The British colonies of New South Wales, Queensland, Victoria, South Australia, Tasmania, and Western Australia federate as the Commonwealth of Australia; Edmund Barton is appointed the first Prime Minister.
August 5 » Peter O'Connor sets the first IAAF recognised long jump world record of 24ft 11.75in (7.6137m), a record that would stand for 20 years.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
September 14 » U.S. President William McKinley dies after being mortally wounded on September 6 by anarchist Leon Czolgosz and is succeeded by Vice President Theodore Roosevelt.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
November 13 » The 1901 Caister lifeboat disaster.
Day of death September 19, 1949
The temperature on September 19, 1949 was between 10.3 °C and 20.6 °C and averaged 14.7 °C. There was 6.9 hours of sunshine (55%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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).
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I69013.php : accessed March 15, 2026), "Jan Roelfsema (1870-1949)".
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