Nautical mile Nautical mile A nautical mile (also known as an air mile) is a unit of measurement defined as exactly . Historically, it was defined as one minute of latitude, which is one sixtieth of a degree of latitude – i.e. since a minute of a degree is x = , the Earth's polar circumference is approximately 21,600 nautical miles. It is a non-SI unit which today has a continued use in both air and marine navigation, and for the definition of territorial waters. There is no single internationally agreed symbol. While using M itself, the International Bureau of Weights and
How Many Miles to Babylon? (novel) How Many Miles to Babylon? (novel) How Many Miles to Babylon? is a novel by Irish writer Jennifer Johnston, first published in 1974. The novel explores the relationship of two men, an Anglo-Irish aristocrat, Alexander Moore, and a lower class son of a labourer on his lands, Jerry, as they experience the First World War. The story is the complex tale of a friendship between two boys in Ireland prior to and during World War I. Alec, the son of Anglo-Irish parents grows up lonely and friendless on his parents' estate in Wicklow during the early years of the 20th