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Home > Society and Social Sciences > Society and culture: general > Gregorian Calendar, Including: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm
Gregorian Calendar, Including: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm

Gregorian Calendar, Including: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm


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About the Book

Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book is a collaboration focused on Gregorian calendar.More info: The Gregorian calendar, also known as the Western calendar or the Christian calendar, is the internationally accepted civil calendar. It was introduced by Pope Gregory XIII, after whom the calendar was named, by a decree signed on 24 February 1582, a papal bull known by its opening words Inter gravissimas. The reformed calendar was adopted later that year by a handful of countries, with other countries adopting it over the following centuries. The motivation for the Gregorian reform was that the Julian calendar assumes that the time between vernal equinoxes is 365.25 days, when in fact it is about 11 minutes less. The accumulated error between these values was about 10 days when the reform was made, resulting in the equinox occurring on March 11 and moving steadily earlier in the calendar. Since the equinox was tied to the celebration of Easter, the Roman Catholic Church considered that this steady movement was undesirable.


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Product Details
  • ISBN-13: 9781242757402
  • Publisher: Hephaestus Books
  • Publisher Imprint: Hephaestus Books
  • Height: 246 mm
  • Sub Title: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm
  • Width: 189 mm
  • ISBN-10: 1242757406
  • Publisher Date: 25 Aug 2011
  • Binding: Paperback
  • Spine Width: 9 mm
  • Weight: 299 gr


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Gregorian Calendar, Including: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm
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Gregorian Calendar, Including: Common Year Starting on Sunday, Common Year Starting on Friday, Common Year Starting on Monday, Dominical Letter, Leap Year Starting on Sunday, Comm
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