The temperature on November 14, 1884 was about -0.5 °C. The air pressure was 2 kgf/m2 and came mainly from the east. The airpressure was 77 cm mercury. The atmospheric humidity was 92%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
March 27 » A mob in Cincinnati, Ohio, attacks members of a jury which had returned a verdict of manslaughter in what was seen as a clear case of murder; over the next few days the mob would riot and eventually destroy the courthouse.
May 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
July 3 » Dow Jones & Company publishes its first stock average.
July 5 » Germany takes possession of Cameroon.
October 6 » The Naval War College of the United States is founded in Rhode Island.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
Day of marriage October 21, 1911
The temperature on October 21, 1911 was between 8.2 °C and 17.2 °C and averaged 12.8 °C. There was 1.3 mm of rain. There was 3.6 hours of sunshine (35%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
August 14 » United States Senate leaders agree to rotate the office of President pro tempore of the Senate among leading candidates to fill the vacancy left by William P. Frye's death.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of death June 2, 1950
The temperature on June 2, 1950 was between 8.9 °C and 24.0 °C and averaged 17.5 °C. There was 13.5 hours of sunshine (82%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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).
February 8 » Cold War: The Stasi, the secret police of East Germany, is established.
March 12 » The Llandow air disaster kills 80 people when the aircraft they are travelling in crashes near Sigingstone, Wales. At the time this was the world's deadliest air disaster.
July 4 » Cold War: Radio Free Europe first broadcasts.
July 11 » Pakistan joins the International Monetary Fund and the International Bank.
July 24 » Cape Canaveral Air Force Station begins operations with the launch of a Bumper rocket.
December 17 » The F-86 Sabre's first mission over Korea.
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I18308.php : accessed February 14, 2026), "Joannes Augustinus de Roover (1884-1950)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.