eclipse yearThe period of time between two successive passages of the Sun through the same node of the Moon's orbit. It is equal to 346.620 days, being less than the sidereal year because of regression of the Moon's nodes. There are almost exactly 19 eclipse years in one saros.
eclipse year[i′klips ‚yir]
The interval between two successive conjunctions of the sun with the same node of the moon's orbit, equal to 346.62 days. Also known as draconic year; nodical year.