The temperature on May 30, 1888 was about 17.2 °C. There was 0.8 mm of rain. The air pressure was 27 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. 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.
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.
March 23 » In England, The Football League, the world's oldest professional association football league, meets for the first time.
June 15 » Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire. Due to the death of his predecessors Wilhelm I and Frederick III, 1888 is the Year of the Three Emperors.
September 8 » Isaac Peral's submarine is first tested.
September 22 » The first issue of National Geographic Magazine is published.
October 21 » Foundation of the Swiss Social Democratic Party.
October 30 » The Rudd Concession is granted by Matabeleland to agents of Cecil Rhodes.
Day of death April 20, 1969
The temperature on April 20, 1969 was between -0.3 °C and 9.3 °C and averaged 4.7 °C. There was 5.8 hours of sunshine (41%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
January 17 » Black Panther Party members Bunchy Carter and John Huggins are killed during a meeting in Campbell Hall on the campus of UCLA.
May 13 » May 13 Incident involving sectarian violence in Kuala Lumpur, Malaysia.
July 16 » Apollo program: Apollo 11, the first mission to land astronauts on the Moon, is launched from the Kennedy Space Center at Cape Kennedy, Florida.
August 11 » The Apollo 11 astronauts are released from a three-week quarantine following their liftoff from the moon.
November 21 » The first permanent ARPANET link is established between UCLA and SRI.
December 24 » Nigerian troops capture Umuahia, the Biafran capital.
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I1017.php : accessed February 25, 2026), "Jan Blaauboer (1888-1969)".
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