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On land, the league is most commonly defined as three miles (4.83 km), although the length of a mile could vary from place to place as well as depending on the era. At sea, a league is three nmi (3.452 mi; 5.556 km). English usage also included many of the other leagues mentioned below (for example, in discussing the Treaty of Tordesillas).
Posidonius calculated the Earth's circumference by reference to the position of the star Canopus.As explained by Cleomedes, Posidonius observed Canopus on but never above the horizon at Rhodes, while at Alexandria he saw it ascend as far as 7 + 1 ⁄ 2 degrees above the horizon (the meridian arc between the latitude of the two locales is actually 5 degrees 14 minutes).
40–65 miles per hour (64–105 km/h) [fn 22] Restrictions only in some states, typically 5–15 mph lower. None formally, though jurisdiction-dependent Venezuela: 40–60 kilometres per hour (25–37 mph) 120 [fn 23] 60–120: 80: 40–60: 5 mph (8 km/h) Vietnam [72] 50–60: 120 (100) 60–90: 60–80: 60–80: 20 km/h Zimbabwe: 60 ...
Kincheloe flew 2000 miles per hour (3,200 km/h) at 126,000 feet (38,500 m), or 24 miles up. At this altitude and speed, aerodynamic lift still carries 98 percent of the weight of the plane, and only two percent is carried by inertia, or Kepler force , as space scientists call it.
As of November 9, 2020, Singapore Airlines Flights 23 and 24 is the world's longest active commercial flight between Singapore and New York–JFK, covering 15,349 km (9,537 mi; 8,288 nmi) in around 18 hours and 40 minutes, operated by an Airbus A350-900ULR.
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The USA Cross Country Championships, first held in 1890, include six races: masters women (8 km), masters men (8 km), junior women (6 km), junior men (8 km), open women (8 km) and open men (12 km). In addition to crowning national champions, the championships serve as the trials race to select the Team USA squad for the IAAF World Cross Country ...
Lexington had one of the highest recorded wind speeds from Friday’s historic storm.