The distance between buildings is 28 meters, the building in front is the ninth floor, and I am on the third floor, 2.9 meters high. How long can the third floor get sunshine in winter? How about the

The distance between buildings is 28 meters, the building in front is the ninth floor, and I am on the third floor, 2.9 meters high. How long can the third floor get sunshine in winter? How about the lighting? If you want good lighting, live high. The third floor may not see the sun for several hours, and it may not meet the national sunshine requirements or our requirements for lighting! To estimate how many hours the sun shines, you need to know the specific cornice height, specific location, width and other detailed data of your city and 9 floors south of your home. It is impossible to estimate how long the solar energy lasts in winter. The data is slightly biased and the error is too big.