"Don Enrique says a full moon pulls up the highest tides of the month, at midday and midnight. And it pulls them down to their lowest ebb when it is rising or setting. So says a man in a frock coat and breeches who, if he tried to row a boat, would fall out instantly and drown. But Leandro said the same thing about the moon and high tide, so it might be true.
How can you know if the moon is going toward full, or disappearing?
This evening the moon was half, and Leandro said it's dying away. You can tell because it's shaped like the letter C, not curved forward like D. He says when the moon is D like Dios, it is growing to fill God's sky. When dying away it is C, like Cristo on the cross."
-- Barbara Kingolver, The Lacuna