The temperature on March 8, 1875 was about 10.4 °C. The air pressure was 11 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 89%. 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).
January 5 » The Palais Garnier, one of the most famous opera houses in the world, is inaugurated in Paris.
February 24 » The SSGothenburg hits the Great Barrier Reef and sinks off the Australian east coast, killing approximately 100, including a number of high-profile civil servants and dignitaries.
March 15 » Archbishop of New York John McCloskey is named the first cardinal in the United States.
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 marriage May 19, 1897
The temperature on May 19, 1897 was about 14.9 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 75%. Source: KNMI
January 31 » Czechoslav Trade Union Association is founded in Prague.
February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
Day of death June 16, 1949
The temperature on June 16, 1949 was between 8.5 °C and 15.4 °C and averaged 11.3 °C. There was 3.3 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) 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).
January 2 » Luis Muñoz Marín is inaugurated as the first democratically elected Governor of Puerto Rico.
January 26 » The Hale telescope at Palomar Observatory sees first light under the direction of Edwin Hubble, becoming the largest aperture optical telescope (until BTA-6 is built in 1976).
May 6 » EDSAC, the first practical electronic digital stored-program computer, runs its first operation.
May 20 » In the United States, the Armed Forces Security Agency, the predecessor to the National Security Agency, is established.
September 30 » The Berlin Airlift ends.
December 27 » Indonesian National Revolution: The Netherlands officially recognizes Indonesian independence. End of the Dutch East Indies.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I104501.php : accessed February 15, 2026), "Jan Riemersma (1875-1949)".
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