The lunar nodes are not actual planets, but rather imaginary points used for astronomical calculations. These points are essential in determining the occurrence of solar and lunar eclipses, which happen when the Sun and Moon align with one of these nodes. The ephemerides notes the nodes' positions, which mark where a planet transitions from south to north latitude.
Symbolically, the nodal axis represents a relationship between time and space, similar to the ascendant-descendant axis. In Hindu astrology, the Dragon's Head (Rahu) and the Dragon's Tail (Ketu) are respectively assigned as the north and south nodes, associated with the qualities of Jupiter and Saturn. Interpretations of the nodal axis vary, with some considering the north node as indicative of growth and development, while the south node represents skills developed through karma. Conjunctions with the nodal axis could signify significant transitions in life, while transits to the axis could indicate the entrance of new individuals or pivotal events involving others.