Vastu and Astrology (Jyotish) Correlations
What this domain tests
This domain examines the traditional links between Vastu and Jyotish: directional rulership, muhurta, and the use of the owner's chart. The exam tests correlation, not the claim that astrology replaces site analysis.
Core rules and concepts
- Directional associations used in Vastu: Sun east, Moon northwest, Mars south, Mercury north, Jupiter northeast, Venus southeast, Saturn west. Rahu and Ketu are assigned southwest and northeast in many traditions.
- These associations help explain why an entrance or room may be preferred for a particular activity, but they do not override plot shape, slope, or structural defects.
- Muhurta is used for bhoomi pujan and griha pravesh. Auspicious days and nakshatras are chosen; eclipses and inauspicious periods are avoided.
- Ayadi includes a nakshatra formula. That formula result is not the owner's janma nakshatra, and the two should not be confused.
Worked example
A client has a north-facing house with a north entrance. North is associated with Mercury. If Mercury is benefic and well placed in the client's chart, the north entrance is supported. If Mercury is weak, the consultant may prefer an east or northeast entrance after checking the plot. The reasoning is that the chart is a secondary filter; a northeast cut or a southwest toilet still takes priority.
Traps that cost marks
Do not say Vastu is a branch of Jyotish. Do not fix the entrance only by the Moon sign. Do not confuse the ayadi nakshatra with the janma nakshatra. Do not ignore a structural dosha because the owner's chart is favourable.