Cuspal Interlinks (KP)

The idea

A cusp is not just a boundary line. In KP it is a longitude, and any longitude resolves into a chain of lords: the sign it falls in, the nakshatra it falls in, and then a nest of ever-finer sub-divisions inside that nakshatra.

Each of those lords is a planet. Each of those planets signifies houses. So a single cusp — the 7th, say — reaches out through its chain and touches a set of houses somewhere else in the chart. That reach is the interlink.

The Cuspal Interlinks table, or KCIL, is that computation carried out for all twelve cusps at once.

What the table contains

Twelve rows, one per cusp. Each row carries the cusp number, its longitude in degrees-minutes-seconds, its sign, and then six lords:

And for every one of those lords, three things:

• occupies — the single house that planet sits in (or blank if it is not a computed planet in this chart);
• owns — the houses whose cusp-signs it rules;
• signifies — its full Grah Nirdeshan house set.

That third column is the one that carries the weight. It is not a shortcut list of “occupies plus owns” — it is the complete ranked significator computation for that planet, star lord and all, flattened to the set of houses it reaches.

How the chain is built

The nakshatra is 13°20′ wide and belongs to its star lord. That span is then cut into nine subs, in proportion to the Vimshottari dasha years — Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19, Mercury 17, out of 120 — starting from the star lord itself and running in Vimshottari order.

Then each sub divides the same way into sub-subs. Each sub-sub into sookshmas. Each sookshma into pranas. The lord found at one level becomes the starting lord of the level below it, and that level’s span becomes the new total.

So the subs are unequal. A Venus sub occupies twenty-one-hundred-and-twentieths of its nakshatra; a Sun sub barely a twentieth. This is why two cusps a degree apart can have completely different sub lords, and why KP demands a birth time you actually trust.

Star lord, sub lord

The two that carry the reading:

• The star lord is the source. It shows where the matter comes from — which houses are in play at all.
• The sub lord is the decider. It says yes or no.

This is the KP move that a Vedic reading has no direct equivalent for. A cusp whose star lord signifies all the right houses, but whose sub lord signifies the houses that obstruct them, is a promise denied — not diluted, denied. The sub lord has the last word.

The app’s event judgement implements exactly this and nothing more: it takes the event’s primary cusp, reads that cusp’s sub lord, computes the sub lord’s signified houses, and checks them against the event’s positive and negative house groups. Positive hits and no negative hits reads as promised; both reads as mixed; only negative reads as denied; neither reads as unclear. That is the entire rule. There is no hidden scoring.

The traversal, and where it lives

In KP writing, “cuspal interlink” often means more than the matrix above — it means the traversal. The 7th cusp’s sub lord deposited in the star of a planet signifying the 2nd and 11th, so the chain 7 → 2 → 11 closes and marriage is structurally promised.

For a long time this page said, correctly, that the app laid out every fact that traversal needs and did not perform it. That is no longer true, and the honest correction is worth more than the old caveat: the app now computes the cusp-to-cusp linkage two different ways, and they are genuinely different instruments rather than one feature shown twice.

• The house-wise link table (क.ई.लि (सब)) counts, for each cusp, which other cusps carry its deciding lord’s star, sub and sub-sub lords in their own chain slots. It is a strict, literal reading — appearances in chain slots and nothing else — and it is the one closest to what Khullar’s own text describes.
• The Interlink Graph resolves each chain lord all the way to its significations instead, producing a weighted edge for every cusp pair. Because significations are broad, this graph is much denser: ten to twelve targets per cusp against the table’s six or seven.

Neither contains the other, which is exactly why both exist. The table answers “does this promise appear in that cusp’s chain”; the graph answers “how strongly does this cusp reach that one”. Reading the dense graph as though it were the strict table would find promises everywhere.

The third view, क.ई.लि (सब सब), is the same links read from the planet end: for each graha, the cusps it is involved in, commits to, and culminates in.

One thing we still do not claim

The link tables are structural. They tell you which cusps are tied to which — not when, and not whether a given tie is the one that fires.

The one place the app draws a verdict from a cusp’s chain is the event judgement described above: a single cusp, its sub lord, one house-group test. That is deliberately narrow. A full KCIL reading combines the links with dashas, transits and ruling planets, and that combination is still the astrologer’s to make.

Depth, and empty rows

Two things will show up blank, and both are meaningful:

• Sookshma and prana are absent unless the KP depth setting reaches them. The chain resolves as deep as you ask and no deeper — at sub-sub depth those two columns simply are not there. The default reaches prana.
• A lord with no data — a chain lord that is not among the chart’s computed planets — returns a row with the planet named but nothing occupied, owned or signified. Read it as unknown, not as signifies no houses.

The settings that are not yours

Worth repeating on every KP page: the KP pages force the KP ayanamsha and Placidus houses, whatever you have chosen in Advanced Settings.

This is not us ignoring you. The sub lord of a cusp is a KP-ayanamsha quantity — computing it against a Lahiri cusp longitude and then reading it by KP rules would produce a chart that is not consistent with either system. The same reasoning is why the KP dasha dates differ from the app’s main Dasha tab by roughly a fortnight: the Moon they are computed from is a KP-ayanamsha Moon. That gap is deliberate and it is pinned by a test.

And the cusps are Placidus, with the cusp taken as the start of the bhava rather than its middle — the KP convention, not the Vedic Sripati one.

Where to go next

• Grah Nirdeshan — the significator engine every lord in this table is resolved through.
• Bhaav Nirdeshan — who can deliver each house.
• KP Horary — the same machinery driven by a number from 1 to 249 instead of a birth time.