Richards, E. G. Mapping Time (0192862057)
Mapping Time is an account for the general reader of the history and underlying basis of each of the most important calendars of the world, from antiquity to modern times. There are descriptions of prehistoric calendars, of those devised by the Egyptians, the Mayans, the Aztecs, and other civilizations, of the short-lived French Republican calendar, which introduced a ten-day week, and of our present-day Gregorian calendar. This fascinating and highly entertaining book is the perfect guide to understanding the background of time in the run up to the millennium. 'an easily accessible mine of material' TLS 'Richards makes even the most arcane complications arising from the accident of Earth's spin and orbit seem fascinating' New Scientist
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