April 25 » Spanish–American War: The United States declares war on Spain.
May 8 » The first games of the Italian football league system are played.
June 11 » The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)
September 2 » Battle of Omdurman: British and Egyptian troops defeat Sudanese tribesmen and establish British dominance in Sudan.
September 13 » Hannibal Goodwin patents celluloid photographic film.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
Day of death September 13, 1963
The temperature on September 13, 1963 was between 10.8 °C and 19.4 °C and averaged 14.5 °C. There was 9.7 hours of sunshine (75%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 13 » Coup d'état in Togo results in the assassination of president Sylvanus Olympio.
February 8 » The regime of Prime Minister of Iraq, Brigadier General Abd al-Karim Qasim is overthrown by the Ba'ath Party.
September 16 » Malaysia is formed from the Federation of Malaya, Singapore, North Borneo (Sabah) and Sarawak. However, Singapore soon leaves this new country.
November 1 » The Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.
November 18 » The first push-button telephone goes into service.
December 22 » The cruise ship Lakonia burns 180 miles (290km) north of Madeira, Portugal with the loss of 128 lives.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I14852.php : accessed February 6, 2026), "Jan van Marum (1898-1963)".
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