an Entity references as follows:
Lunar eclipses are grouped by their saros number, each series lasts between 1200 and 1600 years and contains from 69 to 89 lunar eclipses. Lunar eclipses in even series exist at the ascending node of the Moon's orbit, and odd series occur at the descending nodes. Series have been indexed as −20 to 183 (active between 2000 BCE and 3000 CE), with events summarized:
![[RDF Data]](/fct/images/sw-rdf-blue.png)
