I'm no expert, but I think as the moon gradually moves away from the earth the instance of the tides accuring at the moons transit will fall further behind. I'm assuming millions of years ago high tide did coincide with the transit.
Matt
Oh and the pics I think just make it easier for people to understand the gravitational effect the moon has. If they put the moon where you have placed it, I think would confuse confuse more people then just yourself
