How Vihaga Yoga forms
This is the exact condition the check above applies.
| Condition | Requirement |
|---|---|
| The grahas | All seven, Sun through Saturn |
| The houses | Only the 4th and the 10th |
| Empty | The other ten houses, including the Lagna |
| How often it occurs | Did not occur in a 398-chart sample |
Śakaṭa's counterpart: the same two-house confinement, on the other axis.
What Sārāvalī says Vihaga Yoga gives
Sārāvalī gives a wandering disposition, mean habits, work as a messenger, living through sexual dealings, shamelessness and a fondness for quarrels.
The bird is the image — never settled, always between two points. With the 1st and 7th empty, there is no fixed self and no fixed partner; everything the chart has oscillates between the base and the summit.
The unattractive clauses are the source's and are given here as written. What survives translation is the structural claim: constant movement between two poles, with nothing anchoring either end.
Ākṛti yogas — the shape the grahas make
Vihaga is the other, on the perpendicular axis — and both are read badly.
We measured it rather than guessed, and Vihaga did not occur once in a sample of 398 charts. That follows from what it asks — all seven grahas in the 4th and 10th only. — which the seven grahas almost never satisfy together. A "not present" result here is close to certain, and carries no bad news.
The twenty Ākṛti yogas are named for the figure the seven grahas trace across the houses — a boat, a parasol, a bow, a lotus. Sārāvalī gives the class its own result before the individual ones: a person with any Ākṛti yoga is satisfied with their own fortune, earns through authority, is dear to those in power, and is famous. The individual yoga then says what kind of person that is.
Two things true of every Nābhasa yoga
They run continuously — Sārāvalī says the Nābhasa yogas are "effective at all times independent of Daśās", which sets them apart from almost every other yoga in Jyotiṣa. And they constrain all seven grahas at once, so most charts carry only a few and a "not present" result is the ordinary answer.
How this check works
Your chart is computed from an astronomical ephemeris on the Lahiri (Citrapakṣa) ayanāṁśa, and the formation rule stated on this page is tested against it directly — the same rule, not a paraphrase. Where the classical texts disagree about a condition, the page names the reading we follow.