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| | The Saros Interval |
 | | The term is known as the "Saros" and refers to an interval of 223 lunar months after which the earth, sun and moon return almost exactly to their same relative positions. |
 | | After three saros cycles 54 years 34 days 150; the eclipse would be back to its original longitude, but it would have shifted, on the average, about 6 miles (1,000 km) northward or southward, taking totality and even major partiality out of view for the original observer. |
 | | A saros period truly does predict with accuracy that a solar eclipse will happen, but it would have been extremely hard for an ancient astronomer to confirm that the predicted eclipse had taken place and thus difficult for the astronomer or those he served to retain confidence in his solar eclipse predictions. |
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