There is a reason why: it depends on the different calendars for different cultures. The Chinese New Year (Yuan Dan) is always on the same date according to the Chinese Calendar, but it changes from one year to another according to our calendar. Click on the link below and you'll know about this topic and when is 2.014 Chinese New Year. For example, you can know that we are going to start the Year of the horse, according to the Chinese Zodiac.
And you can also surf from this page following the links you get there to know more about it if you like.
CHINESE NEW YEAR