Re: Concalendrical reference point
| From: | Maarten van Beek <dungeonmaster@...> |
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| Date: | Tuesday, May 28, 2002, 7:11 |
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> Van: John Cowan
> Onderwerp: Re: Concalendrical reference point
>
> The point here is that the Julian calendar
> repeats itself every 28 years, the moon phases every 19 years (19 years
> = 255 lunar months almost exactly), and the Roman Imperial taxes
> repeated every 15 years. 4173 B.C.E. is the moment when all three
> of these cycles are in the first year. So Jan 1, 4173 B.C.E. is a
> Sunday and a full moon and the first year of the indiction (tax) cycle.
And since the least common multiple of 28, 19 and 15 is equal to 7980, the
next time all "should" be in their first year would be -4173+7980+1= 3808
AD.
The +1 is added since there is no 0 year.
Maarten