The temperature on December 7, 1878 was about 1.3 °C. The air pressure was 1 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 November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
February 28 » The Second Boer War: The 118-day "Siege of Ladysmith" is lifted.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
December 18 » The Upper Ferntree Gully to Gembrook, Victoria Narrow-gauge (2ft 6 in or 762mm) Railway (now the Puffing Billy Railway) in Victoria, Australia is opened for traffic.
Day of death December 23, 1954
The temperature on December 23, 1954 was between 1.4 °C and 10.4 °C and averaged 6.0 °C. There was 11.4 mm of rain during 8.3 hours. There was 0.4 hours of sunshine (5%). The partly or heavily clouded was. The average windspeed was 7 Bft (strong wind) and was prevailing from the west-northwest. Source: KNMI
February 28 » The first color television sets using the NTSC standard are offered for sale to the general public.
April 1 » United States President Dwight D. Eisenhower authorizes the creation of the United States Air Force Academy in Colorado.
May 13 » The original Broadway production of The Pajama Game opens and runs for another 1,063 performances. Later received three Tony Awards for Best Musical, Best Performance by a Featured Actress in a Musical, and Best Choreography.
June 14 » U.S. President Dwight D. Eisenhower signs a bill into law that places the words "under God" into the United States Pledge of Allegiance.
July 7 » Elvis Presley makes his radio debut when WHBQ Memphis played his first recording for Sun Records, "That's All Right".
November 22 » The Humane Society of the United States is founded.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I13616.php : accessed January 27, 2026), "Jan Heijkoop (1878-1954)".
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