Budhaditya Yoga Calculator
Budhaditya Yoga — from Budha (Mercury) and Aditya (the Sun) — forms when these two planets sit **conjunct in the same house**. It is one of the most commonly cited yogas for intellectual sharpness, since Mercury can never be more than roughly one sign away from the Sun, making this conjunction genuinely frequent. This calculator checks whether it forms in your chart, and whether combustion weakens it.
Ayanamsa: Lahiri (Chitrapaksha) · Houses: Whole Sign · Rule: Sun and Mercury conjunct in the same house; combustion checked for strength
Creator
James WhitfieldReviewers
Sarah Mitchell, M.A. in Cultural Astronomy & Astrology and Marcus Reynolds, Professional Astrologer & Astronomer
Last updated:
What Is Budhaditya Yoga?
The Sun represents authority, willpower, and vitality; Mercury represents intellect, analysis, and communication. Their conjunction is classically read as fusing solar confidence with mercurial sharpness — a combination associated with articulate speech, quick analytical thinking, and an aptitude for scholarship, strategy, or precise technical work.
The Combustion Caveat
Because Mercury orbits close to the Sun, this conjunction always risks combustion — Mercury sitting too near the Sun to be classically considered "visible," which is read as weakening its natural significations even while the conjunction itself still holds. This calculator flags combustion separately from mere presence, since a combust Budhaditya Yoga is traditionally read as intellect that is present but somewhat clouded or held back, rather than absent.
Why the Exact Degree Gap Matters
Classical texts generally place the combustion threshold for Mercury within roughly 12-14 degrees of the Sun (with a tighter allowance when retrograde). A conjunction with a wider degree gap between the two planets is read as a cleaner, stronger expression of the yoga than one where Mercury sits almost exactly on top of the Sun.
Budhaditya Yoga Calculator FAQs
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