The temperature on January 27, 1955 was between -0.8 °C and 4.1 °C and averaged 1.7 °C. There was 3.1 hours of sunshine (35%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
May 14 » Cold War: Eight Communist bloc countries, including the Soviet Union, sign a mutual defense treaty called the Warsaw Pact.
May 25 » First ascent of Mount Kangchenjunga: A British expedition led by Charles Evans, Joe Brown and George Band reaches the summit of the third-highest mountain in the world (8,586 meters); Norman Hardie and Tony Streather join them the following day.
May 25 » In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.
July 27 » El Al Flight 402 is shot down by two fighter jets after straying into Bulgarian air space. All 58 people onboard are killed.
August 28 » Black teenager Emmett Till is brutally murdered in Mississippi, galvanizing the nascent civil rights movement.
September 20 » The Treaty on Relations between the USSR and the GDR is signed.
When copying data from this family tree, please include a reference to the origin: Simon Opstal, "Family tree Opstal", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opstal/I2467.php : accessed January 21, 2026), "Willem Hendrik van der wal (1955-2019)".
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