The daily energy comes in after twelve midnight on a given day and leaves before twelve midnight of next day. Rat' means that the daily energy contains strong wood plus the energy of the rat. Rat' energy for 1993 was given on February 12, 1993. Rat contains water. Ox contains earth, metal, and water.
Tiger contains strong wood, strong fire, and strong earth.
Hare contains wood. Dragon contains strong earth, wood, and water. Snake contains strong fire, strong earth, and strong metal. Horse contains fire and earth. Sheep contains earth, fire, and wood.