Longitude by chronometer highest point, diminish the accuracy of determining longitude by chronometer as a method of celestial navigation. Accuracies of less than error in position are difficult to achieve using the "longitude by chronometer" method. Other celestial navigation methods involving more extensive use of both the Nautical Almanac and sight reduction tables are used by navigators to achieve accuracies of one nautical mile (1.9 km) or less. This only calculates a longitude at the assumed latitude though a position line can be drawn. The observer is somewhere along the position line. Time sight is a general method for determining longitude by celestial
How Many Miles to Babylon? (novel) and careful description" to depict the chaotic environment created by war. The novel also includes small abstracts from poetry and songs. The title of the novel is derived from a traditional nursery Rhyme, How Many Miles to Babylon?: <poem> </poem> When re-reviewing the novel in 2011, Philip Womack described the novel as "slim but emotionally hefty." For Womack, it's a poignant retelling of how the First World War erased lines of class, and its emotional toil: "Johnston's novel conveys both the insanity of war and the poignancy of unspoken tenderness." In 1982 it was adapted for television by the BBC,