| | The Dispatch - Serving the Lexington, NC - News (Site not responding. Last check: 2007-10-28) |
 | | Eclipse cycles have a period in which a certain number of synodic months closely equals an integer or half-integer number of draconic months: one such period after an eclipse, a syzygy (new moon or full moon) takes place again near a node of the Moon's orbit on the ecliptic, and an eclipse can occur again. |
 | | However, the synodic and draconic months are incommensurate: their ratio is not an integer number. |
 | | The ratio of synodic months per half eclipse year and per eclipse year yields the same series: 5.868831091 = synodic months/half, /full eclipse years 5+1/ 5/1 1+1/ 6/1 semester 6+1/ 41/7 1+1/ 47/8 47/4 1+1/ 88/15 1+1/ 135/23 tritos 1+1/ 223/38 223/19 Saros 1+1/ 358/61 Inex 11+1/ 4161/709 1+... |
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