DashaHQThe DashaHQ journal
The navagraha: seven wanderers and two points
Published 2026-09-30
The Vedic scheme runs on nine grahas, and the Sanskrit word already tells you the theory. Graha comes from a root meaning to seize: grahas are the grabbers, forces that take hold of a life and pull. Seven of the nine are things you can see without a telescope. The other two are not things at all, and the tradition has always said so.
The seven wanderers
The Sun and the Moon count as grahas even though astronomy files one as a star and the other as a satellite; the tradition classifies by role, and both roles are structural. Then come the five planets any ancient skywatcher knew personally: Mercury, Venus, Mars, Jupiter, Saturn, the lights that wander against the fixed stars.
The weekdays still carry the same seven in the same order. Sunday is the Sun's, Monday the Moon's, Tuesday Mars, Wednesday Mercury, Thursday Jupiter, Friday Venus, Saturday Saturn. English buried most of these names under Norse substitutes, but French kept the Latin straight: mardi is Mars's day, mercredi Mercury's, jeudi Jupiter's, vendredi Venus's. The Vedic weekday lords and the Roman ones are the same bodies in the same sequence, one piece of ancient astronomy that both civilizations kept.
Rahu and Ketu: intersections with consequences
The last two grahas are the north and south nodes of the Moon: the two spots where the Moon's tilted orbit crosses the Sun's apparent path. Nothing sits at those degrees. They are intersections, and eclipses are how the sky points at them, because a solar or lunar eclipse happens only when the Sun and Moon line up near one of these crossings.
The old story holds the same geometry. During the churning of the ocean, the asura Svarbhanu sneaked a sip of the nectar of immortality; the Sun and Moon pointed him out, the discus fell, and the two halves lived on forever. Rahu, the head, and Ketu, the body, have chased the two luminaries ever since, swallowing them now and then. As eclipse mythology goes, it is remarkably precise: the villain of the story is a crossing point, and the crime is an alignment.
The lap that never ends
Both nodes slide backward along the zodiac, a full circuit in about 18.6 years. That is why the engine lists them as retrograde almost always: regression is their entire motion. Vimshottari gives Rahu an eighteen-year chapter, and the near-match between the eighteen years and the node's own lap is the kind of echo people who love this system point at with delight.
How we use it
The engine computes both nodes from the mean node, the smoothed path of the crossing points, and holds Ketu at exactly 180 degrees from Rahu. Some lineages compute a true node that wobbles around the mean one; that choice is a convention, stated openly here. On the dashboard they are the Ra and Ke tags, and in a reflection they appear like any placement: named, given a texture, and turned into a question.
- Navagraha: seven visible bodies and two computed points. Graha means seizer.
- Rahu and Ketu are the Moon's orbital crossings. Eclipses are their signature.
- The engine uses the mean nodes; Ketu sits opposite Rahu by construction.
Curious what season your own chart is in? Start the 7-day trial — a daily reflection, computed from your birth data, for entertainment and self-reflection.