Pillar article
What a Sun Transit Actually Does
The Sun changes sidereal sign about once a month. That month belongs to one house in your chart. Status, health of the question, and the father-karaka all take their cue from that house.
One sign, one house, about a month
The effect of a Sun transit is the house the Sun enters, counted from the lagna on a Lahiri sidereal chart, while the year's larger timing remains the Vimshottari dasha already running. The Sun spends roughly a month in each sign. Call that a solar month, a sankranti to the next sankranti, and do not paste a civil date on it here. While he occupies a house he brings visibility, authority, and the father-karaka's tone to that department. In the 1st the body and the name are on display. In the 10th the career is. In the 7th the marriage and the open partnerships are. In the 4th the home is. These are four different effects of 'the Sun changed sign,' and a column that gives all twelve Sun signs the same paragraph has skipped the count.
The dasha can refuse the month
A solar month in the 10th during the dasha of the 10th lord is a career month you can plan around. The same solar month during a dasha of the 12th lord, with the 10th lord asleep, is a month when work is visible and the deeper plot is elsewhere. People feel cheated by sun-transit forecasts because the forecast never asked which mahadasha they were in. Natal condition matters too. A fallen Sun in Libra will transit his exaltation in Aries once a year and still be a fallen Sun in the birth chart the other eleven months, and even during that Aries month the natal fall remains the resident. Use transits to time a house that the dasha has already opened. Do not use them to discover a new personality.
What the Sun does not transit into being
He does not choose a gemstone. Ruby waits for a birth chart that names the Sun. He does not diagnose illness. The 6th house can be the month's topic if he is transiting the 6th, and a physician still names a condition. He does not marry you. If he transits the 7th, the 7th house and the D9 Navamsa are still the marriage, and a month of solar attention is not a spouse. He does not ruin a sign. 'The Sun is in your sign, be careful' is a birthday-column sentence. On a Lahiri chart the careful question is which house that sign is, whether the sign lord is a friend of the Sun, and whether your dasha cares. Answer those three and the transit has an effect you can use.
Frequently asked questions
Does the Sun's transit cause the birthday month's luck?
The birthday is the Sun returning to his natal sign. That lights one house from the lagna. Luck is not the category. The house and the dasha are.
Is sankranti the whole day or the moment?
The ingress is a moment. Festivals often observe the civil day around it. For a chart, the effect is the month he then spends in the new sign.
Do all planets transit this way?
Each planet's transit is a house counted from the lagna. The Sun is simply the fastest of the seven and the one tied to the month.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.