The summer solstice is significant to passive solar building because they are built to take advantage of the sun’s predictable path through the sky.
This helps them to stay cool in the summer and warm in the winter.
Here are photos of the sun’s path in the sky on the winter (top) and summer (below) solstices.
The Earth is rotating around the sun, however, as our planet spins and rotates around the sun, it appears to the inhabitants of Earth that the sun is moving across the sky. Thus, it is often referred to as the ‘movement of the sun’.