Longitude those points (unless on the equator, where these are equal); the difference is less than . A geographical mile is defined to be the length of one minute of arc along the equator (one equatorial minute of longitude), therefore a degree of longitude along the equator is exactly 60 geographical miles or 111.3 kilometers, as there are 60 minutes in a degree. The length of 1 minute of longitude along the equator is 1 geographical mile or , while the length of 1 second of it is 0.016 geographical mile or . Planetary co-ordinate systems are defined relative to their
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