Astronomy, Calendars and Religion

  • Article (PDF)
  • 10 pages
  • Level: all audiences

This article is a chapter from the book The Heavens Proclaim: Astronomy and the Vatican, written by Fr. Juan Casanovas, S. J., an astronomer with the Vatican Observatory.  It gives an explanation of how our religious and civil calendar has changed over time, from the lunisolar Hebrew calendar to the Gregorian calendar, and comments on proposed future reforms.

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