What is uttarayan, and does it reverse the zone energies described?
There are uttarayan and dakshinayan suns. When the Sun is uttarayan its composition is more energetic, so all auspicious ceremonies are done then; the dakshinayan Sun's composition is not as good. The zone layout does not become wrong; the Sun's composition at each angle of inclination explains which energy is needed for which work.
Related questions
A client's location shows coordinates. What do I do with them?
Copy them and paste them into the Google Earth search bar, which takes you to the place. Then draw a straight line along a wall of the building to get the degree. A degree taken from the centre is wrong; the centre only tells you which direction a room is in.
Apart from gridding the house, should the kitchen be gridded separately?
Yes. Interior vastu means zoning each room separately with its own grid and then designing its interior accordingly.
Are three doors in a straight row inauspicious?
They can be either. In the South and West, from where negative energy comes, three doors in a row on padas where doors should not be are inauspicious. In the North and East they are auspicious: temples, all built facing North or East, have three or five doors in a row, as do royal palaces, so the blanket belief that they are bad is a myth.
At what degree do the corner directions (vidisha) fall?
North-East, South-East, South-West and North-West fall exactly 45 degrees from the main directions. Where they fall in your own flat becomes clear once you do the zoning.
At what time does the West direction show its greatest energy?
After sunset. Its power is felt from sandhya kaal onward and increases as the night advances, which is why people do sadhana at night and worship Lakshmi at night for wealth.
Can wooden flooring and wooden ceilings be used in any zone?
Yes, wood can be used in every zone and direction, just as wooden doors are used everywhere. Similarly, white or ivory can be used in all directions when the whole house is painted in that one colour.