The temperature on December 29, 1891 was about 6.9 °C. There was 5 mm of rain. The air pressure was 8 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 88%. 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.
February 15 » Allmänna Idrottsklubben (AIK) (Swedish Sports Club) is founded.
March 17 » SSUtopia collides with HMSAnson in the Bay of Gibraltar and sinks, killing 562 of the 880 passengers on board.
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.
October 28 » The Mino–Owari earthquake is the largest inland earthquake in Japan's history.
Day of death May 11, 1956
The temperature on May 11, 1956 was between 6.9 °C and 16.0 °C and averaged 12.1 °C. There was 3.4 mm of rain during 1.6 hours. There was 1.3 hours of sunshine (8%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 30 » African-American civil rights leader Martin Luther King, Jr.'s home is bombed in retaliation for the Montgomery Bus Boycott.
May 1 » A doctor in Japan reports an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease.
June 28 » in Poznań, workers from HCP factory go to the streets, sparking one of the first major protests against communist government both in Poland and Europe.
September 27 » USAF Captain Milburn G. Apt becomes the first person to exceed Mach 3. Shortly thereafter, the Bell X-2 goes out of control and Captain Apt is killed.
October 21 » The Mau Mau Uprising in Kenya is defeated.
November 7 » Hungarian Revolution: János Kádár returns to Budapest in a Soviet armored convoy, officially taking office as the next Hungarian leader. By this point, most armed resistance has been defeated.
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/I80264.php : accessed December 26, 2025), "Hendrik Slaaf (1891-1956)".
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.