The temperature on May 12, 1861 was about 14.5 °C. There was 13 mm of rain. The airpressure was 76 cm mercury. The atmospheric humidity was 96%. Source: KNMI
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
February 9 » American Civil War: Jefferson Davis is elected the Provisional President of the Confederate States of America by the Confederate convention at Montgomery, Alabama.
February 18 » In Montgomery, Alabama, Jefferson Davis is inaugurated as the provisional President of the Confederate States of America.
March 19 » The First Taranaki War ends in New Zealand.
May 13 » The Great Comet of 1861 is discovered by John Tebbutt of Windsor, New South Wales, Australia.
June 1 » American Civil War: The Battle of Fairfax Court House is fought.
August 28 » American Civil War: Union forces attack Cape Hatteras, North Carolina in the Battle of Hatteras Inlet Batteries which lasts for two days.
Day of marriage October 7, 1887
The temperature on October 7, 1887 was about 12.7 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 81%. 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.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
July 6 » David Kalākaua, monarch of the Kingdom of Hawaii, is forced to sign the Bayonet Constitution, which transfers much of the king's authority to the Legislature of the Kingdom of Hawaii.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.
Day of death February 20, 1942
The temperature on February 20, 1942 was between -5.5 °C and -2.6 °C and averaged -3.7 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 31 » World War II: Allied forces are defeated by the Japanese at the Battle of Malaya and retreat to Singapore.
March 1 » World War II: Japanese forces land on Java, the main island of the Dutch East Indies, at Merak and Banten Bay (Banten), Eretan Wetan (Indramayu) and Kragan (Rembang).
March 17 » Holocaust: The first Jews from the Lvov Ghetto are gassed at the Belzec death camp in what is today eastern Poland.
April 19 » World War II: In Poland, the Majdan-Tatarski ghetto is established, situated between the Lublin Ghetto and a Majdanek subcamp.
August 13 » Major General Eugene Reybold of the U.S. Army Corps of Engineers authorizes the construction of facilities that would house the "Development of Substitute Materials" project, better known as the Manhattan Project.
November 12 » World War II: Naval Battle of Guadalcanal between Japanese and American forces begins near Guadalcanal. The battle lasts for three days and ends with an American victory.
When copying data from this family tree, please include a reference to the origin: Rik Plomp, "Pedigree Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plomp/I5403.php : accessed March 7, 2026), "Huibertje Heikoop (1861-1942)".
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