Full sun, part sun, part shade, full shade

I've always rather wondered what that means, so I finally googled it.

Full sun: six hours of direct sunlight a day, or more.

Part sun, part shade: three to six hours of direct sunlight a day. The two terms are more or less equivalent.

Full shade: less than three hours of direct sunlight a day.

Well, that was easy. Now I just need to sit on my balcony all day and chart the progress of the shade. Fun times!