February 22 » Filipino forces led by General Antonio Luna launch counterattacks for the first time against the American forces during the Philippine–American War. The Filipinos fail to regain Manila from the Americans.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 6 » Bayer registers "Aspirin" as a trademark.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
July 29 » The First Hague Convention is signed.
Day of death May 13, 1960
The temperature on May 13, 1960 was between 11.2 °C and 24.1 °C and averaged 16.3 °C. There was 4.0 mm of rain during 1.6 hours. There was 1.1 hours of sunshine (7%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 24 » Algerian War: Some units of European volunteers in Algiers stage an insurrection known as the "barricades week", during which they seize government buildings and clash with local police.
March 4 » The French freighter La Coubre explodes in Havana, Cuba, killing 100.
April 19 » Students in South Korea hold a nationwide pro-democracy protest against president Syngman Rhee, eventually forcing him to resign.
May 7 » Cold War: U-2 Crisis of 1960: Soviet leader Nikita Khrushchev announces that his nation is holding American U-2 pilot Gary Powers.
May 9 » The Food and Drug Administration announces it will approve birth control as an additional indication for Searle's Enovid, making Enovid the world's first approved oral contraceptive pill.
August 1 » Islamabad is declared the federal capital of the Government of Pakistan.
When copying data from this family tree, please include a reference to the origin: Dirk Kalksma, "Family tree Kalksma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kalksma/I528.php : accessed March 16, 2026), "Pieter Johannes Wytze Kalksma (1899-1960)".
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