Eclipses (both solar and lunar) occur multiple times a year, but some of these may be partial or only viewable in places that are remote and unpopulated.
The 18 year cycle, to which you are referring, is the Saros, which has to do with patterns of eclipses. After approximately 18 years, the pattern of eclipses repeats itself. https://en.wikipedia.org/wiki/Saros_(astronomy)
There are other e
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