Three or four qualifying windows inside the decade when everyone studies. This is what an uninformative rule looks like once you count it.

The slowest trigger of the twelve, attached to the house that means loss and distant lands at the same time.

Every other question here costs you a year of misplaced hope when it goes wrong. This one can cost considerably more.

Combustion means a planet is lost in the Sun's glare and cannot be seen from earth at all. Putting Surya in the house of the invisible makes that literal meaning the best available description of the whole placement.

Labha Bhava is the house of everything that arrives, and a Sun in it makes the arriving conditional on standing. The network is real, the friendships are professional, and the distinction takes most natives a while to notice.

Work out the three dignity ascendants for this placement and every one of them turns out to form a Vipareeta Raja Yoga, a different named yoga each time. No other house in the cluster does that even once across all three.

Surya casts one aspect and one only, the seventh, so from the marriage house it lands squarely on the ascendant. This is the single placement in the cluster where the Sun spends a lifetime looking back at the native.

Surya signifies the father and the ninth house is the father's house, which is the exact configuration Parashara warns about. The ninth gets off more lightly than the first because it has a second karaka to share the load.

Directional strength peaks for Surya at the top of the chart, sixty virupas out of sixty. The karaka rule applies here too, and it is the one house where the arithmetic says it barely matters.

Directional strength is measured from a graha's weakest point, and for the Sun that point is the fourth house exactly. This is the only placement in the cluster where Surya contributes nothing at all to the strength count.

The fifth house asks a graha to be generous with what it produces, and Surya is not a generous graha. The intelligence is real and it arrives ahead of the children, sometimes by a decade.

The second house governs what a person says and what they have kept, and a Sun sitting in it ties both to standing. Money follows position here, and the voice carries an authority that helps in a boardroom and wounds at a dinner table.