The lunar calendar has a sixty year cycle. In the Chinese
horoscope, the five basic elements of Metal, Water, Wood, Fire and Earth, which
make up all matter, are combined with the twelve animal signs of Rat, Ox, Tiger,
Rabbit, Dragon, Snake, Horse, Lamb, Monkey, Rooster, Dog and Pig to form the
sixty year cycle. One's Chinese horoscope is based on which lunar year in this
sixty year cycle one was born. [Click here to learn more about the Chinese
Zodiac]
These books are excellent if you want to learn more
about the Chinese Zodiac: