The temperature on May 25, 1891 was about 13.1 °C. There was 9 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the south. The airpressure was 75 cm mercury. The atmospheric humidity was 70%. Source: KNMI
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
January 31 » History of Portugal: The first attempt at a Portuguese republican revolution breaks out in the northern city of Porto.
March 10 » Almon Strowger patents the Strowger switch, a device which led to the automation of telephone circuit switching.
May 15 » Pope Leo XIII defends workers' rights and property rights in the encyclical Rerum novarum, the beginning of modern Catholic social teaching.
May 20 » History of cinema: The first public display of Thomas Edison's prototype kinetoscope.
July 26 » France annexes Tahiti.
December 22 » Asteroid 323 Brucia becomes the first asteroid discovered using photography.
Day of marriage July 29, 1919
The temperature on July 29, 1919 was between 9.4 °C and 18.2 °C and averaged 13.8 °C. There was 3.4 hours of sunshine (22%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
May 27 » The NC-4 aircraft arrives in Lisbon after completing the first transatlantic flight.
June 15 » John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
September 4 » Mustafa Kemal Atatürk, who founded the Republic of Turkey, gathers a congress in Sivas to make decisions as to the future of Anatolia and Thrace.
September 18 » The Netherlands gives women the right to vote.
October 28 » The U.S. Congress passes the Volstead Act over President Wilson's veto, paving the way for Prohibition to begin the following January.
Day of death April 9, 1952
The temperature on April 9, 1952 was between 5.1 °C and 21.5 °C and averaged 14.2 °C. There was 0.1 mm of rain. There was 8.1 hours of sunshine (60%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
March 15 » In Cilaos, Réunion, 1870mm (73inches) of rain falls in a 24-hour period, setting a new world record (March 15 through March 16).
July 3 » The SSUnited States sets sail on her maiden voyage to Southampton. During the voyage, the ship takes the Blue Riband away from the RMSQueen Mary.
September 6 » A prototype aircraft crashes at the Farnborough Airshow in Hampshire, England, killing 29 spectators and the two on board.
September 8 » The Canadian Broadcasting Corporation makes its first televised broadcast on the second escape of the Boyd Gang.
October 14 » Korean War: The Battle of Triangle Hill is the biggest and bloodiest battle of 1952.
November 25 » Korean War: After 42 days of fighting, the Battle of Triangle Hill ends with Chinese victory, American and South Korean units abandon their attempt to capture the "Iron Triangle".
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/I3310.php : accessed January 18, 2026), "Johannes Albertus Hettinga (1891-1952)".
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