What is the Wells cycle and how long does it last?

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SUMMARY

The Wells cycle, proposed by Garrick Wells, is an eclipse cycle lasting 51,649 days, suggesting that an eclipse observed from a specific location will likely recur after this period. This cycle spans 17 centuries with only one recorded failure. The discussion references the Saros cycle and Poincaré's recurrence theorem, indicating a mathematical relationship between these cycles and lunar phases. The total number of days in the cycle is derived from complex calculations involving lunar months and years.

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Helios
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I discovered an eclipse cycle. It will be called the Wells cycle ( Garrick Wells ). It is simply a cycle of 51649 days. I believe that if you see an eclipse, then 51649 days later, another will likely be seen from your same location. I've have indeed found an example of this while probing the NASA Phases-of-the-Moon web site. The series lasted seventeen centuries, with just one fail. Should someone offer some explanation, I'd love to hear it.
 
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I found a discussion of thirteen-month calandars in which the figure in the OP falls naturally out of the conversation:

The total number of days is 2,014,311 = 3 * (13^2) * 29 * 137.
So not only is the number (39) of 1749-month cycles is divisible by 13,
but the number of days (51649) in each 1749-month cycle.
Each 1749-month cycle
= 107 yerms
= 1749 months
= 3979 trecena
= 32 drifts over 29-day cycle
= 51649 days
= 2 yerm eras

http://www.nabble.com/Re:-5515-Year-Luni-Solar-Cycle-p20917812.html
 

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