I fail to see how this is a FE question. The answer is the same regardless of which model you subscribe to.
A solar day is just under 24 hours. A lunar day is about 24 hours and 50 minutes. Since the two are not perfectly in sync, there will be times when both are located above you at the same time.
Perhaps you could tell us what, exactly, makes "literally no sense"? Normally, we'd expect newcomers to put at least a modicum of effort into their posts.