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Abstract: The analemma is a figure-eight – shaped graphic representation of the earth’s annual path around the sun. It provides the user with values of declination and equation of time for every day of the year. In the first half of the twentieth century, the analemma was a standard feature on any globe or map of the world. In recent years, however, it has all but disappeared. This paper resurrects the analemma. The construction and use of the analemma are explained, and some modern source materials are provided. A complete scheme for navigating by the sun, in which the analemma is used in conjunction with other low-tech methods, is outlined.
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 49, Number 1
Pages: 1 - 6
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