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  •  Julian period -- in the 1500s, people used a 28-year solar cycle (when the combination of calendar date and the day of the week starts to repeat), a 19-year lunar cycle of "Golden Numbers" (when the moon's phases start to repeat on the same calendar dates), and a 15 year "indiction" cycle involving Roman taxes.  Joseph Justus Scaliger combined them into one cycle of 7980 years. (7980 is 28 times 19 times 15).  Since Jesus Christ's birth (according to Dionysius Exiguus) was characterized by "9" in the solar cycle, by Golden Number "1" and by "3" in the indiction cycle, he determined that year 9, 1, 3 was year 4713.  Year 1, 1, 1 is 4713 B.C
  •  Julian Day 2452299 [ 1/24/02] -- The first Julian period began with Year 1 on -4712-01-01 (Julian) and will end after 7980 years on 3267-12-31 (Julian), which is 01-22-3268 (Gregorian). 01-01-3268 J is the first day of Year 1 of the next Julian period
 
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last edited Tuesday, December 16, 2008