The temperature on February 17, 1911 was between 7.2 °C and 10.6 °C and averaged 8.7 °C. There was 0.3 hours of sunshine (3%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
January 15 » Palestinian Arabic-language Falastin newspaper founded.
January 26 » Glenn Curtiss flies the first successful American seaplane.
April 6 » During the Battle of Deçiq, Dedë Gjon Luli Dedvukaj, leader of the Malësori Albanians, raises the Albanian flag in the town of Tuzi, Montenegro, for the first time after George Kastrioti (Skanderbeg).
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
Day of marriage February 6, 1935
The temperature on February 6, 1935 was between -2.0 °C and 4.6 °C and averaged 1.6 °C. There was 0.1 mm of rain. There was 0.9 hours of sunshine (10%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
March 21 » Shah of Iran Reza Shah Pahlavi formally asks the international community to call Persia by its native name, Iran.
March 23 » Signing of the Constitution of the Commonwealth of the Philippines.
April 1 » India's central banking institution, The Reserve Bank of India, is formed.
September 2 » The Labor Day Hurricane, the most intense hurricane to strike the United States, makes landfall at Long Key, Florida, killing at least 400.
December 27 » Regina Jonas is ordained as the first female rabbi in the history of Judaism.
Day of death April 11, 1980
The temperature on April 11, 1980 was between -1.0 °C and 12.1 °C and averaged 6.4 °C. There was 3.0 hours of sunshine (22%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I448043.php : accessed January 22, 2026), "Petrus de Jong (1911-1980)".
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