Kalatra Bhava — marriage, partnership, business alliances, the other
The Sun opposite the ascendant places ego in the seat of partnership. It is excellent for public dealing and for work requiring a face, and harder in marriage, where two centres compete for the same ground. The traditional reading is that the partner is capable and independent — which is a gift or a friction depending entirely on whether the native can share authority.
The 7th house is how you meet an equal, governing marriage, partnership, business alliances, the other. Sun (Surya) is a mild malefic that burns as much as it illuminates and signifies soul, father, authority, vitality, government; its drive is to be seen, to lead, and to express a distinct self.
The 7th is a kendra (angle), one of the four pillars of the chart, where planets act visibly and strongly. Planets in kendras gain Dig Bala (directional strength) depending on which angle they occupy, and their effects are prominent in the life rather than hidden.
Three things modify this placement more than anything else: the sign Sun occupies (see Sun through the signs), the aspects it receives — Jupiter's aspect can rescue a difficult placement and Saturn's can sober an easy one — and the strength of the 7th house lord. Read this as one factor, not a verdict.
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