The temperature on May 9, 1884 was about 14.8 °C. The air pressure was 11 kgf/m2 and came mainly from the southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 83%. 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 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
August 5 » The cornerstone for the Statue of Liberty is laid on Bedloe's Island (now Liberty Island) in New York Harbor.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
Day of death April 29, 1928
The temperature on April 29, 1928 was between 10.8 °C and 16.9 °C and averaged 14.3 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 3 » The Jinan incident begins with the deaths of twelve Japanese civilians by Chinese forces in Jinan, China, which leads to Japanese retaliation and the deaths of over 2,000 Chinese civilians in the following days.
September 18 » Juan de la Cierva makes the first autogyro crossing of the English Channel.
September 27 » The Republic of China is recognized by the United States.
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
October 28 » The "Indonesia Raya", now the national anthem, is first played during the Second Indonesian Youth Congress.
November 18 » Release of the animated short Steamboat Willie, the first fully synchronized sound cartoon, directed by Walt Disney and Ub Iwerks, featuring the third appearances of cartoon characters Mickey Mouse and Minnie Mouse. This is considered by the Disney corporation to be Mickey's birthday.
When copying data from this family tree, please include a reference to the origin: Leo Witkamp, "Family tree Witkamp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-witkamp/I0455.php : accessed January 19, 2026), "Trijntje Jans Koopmans (1864-1928)".
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.