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About: Ex-meridian     Goto   Sponge   NotDistinct   Permalink

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Type: software New Facet based on Instances of this Class

Ex-meridian is a celestial navigation method of calculating an observer's position on Earth. The method gives the observer a position line on which the observer is situated. It is usually used when the Sun is obscured at noon, and as a result, a meridian altitude is not possible. The navigator measures the altitude of the Sun as close to noon as possible and then calculates where the position line lies.