The Lunar Calendar
The Chinese Lunar New Year is the longest chronological record in history, dating from 2600BC, when the Emperor Huang Ti introduced the first cycle of the zodiac. Like the Western calendar, The Chinese Lunar Calendar is a yearly one, with the start of the lunar year being based on the cycles of the moon. Therefore, because of this cyclical dating, the beginning of the year can fall anywhere between late January and the middle of February. This year it falls on February 12th. A complete cycle takes 60 years and is made up of five cycles of 12 years each.
The Chinese Lunar Calendar names each of the twelve years after an animal. Legend has it that the Lord Buddha summoned all the animals to come to him before he departed from earth. Only twelve came to bid him farewell and as a reward he named a year after each one in the order they arrived. The Chinese believe the animal ruling the year in which a person is born has a profound influence on personality, saying: "This is the animal that hides in your heart."
from http://www.new-year.co.uk/chinese/calendar.htmThe Chinese calendar combines the lunar and solar systems together. The Year and Day cycles use the solar system. However, there are two different Month cycles in the Chinese calendar. One uses the lunar system and the other uses the solar system. In the lunar system of Month, the new moon day is the first day of a lunar month. The length of a lunar month is the length of time between two new moon days. The name of a lunar Month is taken from the solar system. The Chinese solar months are not like the months of a modern calendar. The Chinese calendar divides the year into 24 solar segments according to the sun positions on the tropical zodiac (Similar to western astrology). Each segment's name was given for ancient Chinese farmers' use.
from http://www.chinesefortunecalendar.com/clc/LunarCalendar.htm
Lunar Calendar - Western Calendar Conversion
from http://www.chinesefortunecalendar.com