February 2 » The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
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.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
September 13 » Henry Bliss is the first person in the United States to be killed in an automobile accident.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
December 11 » Second Boer War: In the Battle of Magersfontein the Boers commanded by general Piet Cronjé inflict a defeat on the forces of the British Empire commanded by Lord Methuen trying to relieve the Siege of Kimberley.
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
March 21 » Apartheid: Sharpeville massacre, South Africa: Police open fire on a group of black South African demonstrators, killing 69 and wounding 180.
April 21 » Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
May 6 » More than 20million viewers watch the first televised royal wedding when Princess Margaret marries Anthony Armstrong-Jones at Westminster Abbey.
May 27 » In Turkey, a military coup removes President Celâl Bayar and the rest of the democratic government from office.
August 19 » Sputnik program: Korabl-Sputnik 2: The Soviet Union launches the satellite with the dogs Belka and Strelka, 40 mice, two rats and a variety of plants.
September 22 » The Sudanese Republic is renamed Mali after the withdrawal of Senegal from the Mali Federation.
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 January 17, 2026), "Pieter Johannes Wytze Kalksma (1899-1960)".
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