The Chinese calendar is a lunisolar calendar which reckons years, months and days according to astronomical phenomena. It is used for traditional activities in China and overseas Chinese communities. It determines the dates of traditional Chinese holidays, and guides Chinese people in selecting the luckiest days for weddings, travel, moving, or beginning a business.
In the Chinese calendar, the days begin and end at midnight. The months begin on the day with the new moon.
The present Chinese calendar is the product of centuries of
evolution. Many astronomical and seasonal factors were added by ancient
scientists, and people can reckon the date of natural phenomena such as
the moon phase and tide upon the Chinese calendar.
The above is derived from Wikipedia here.
The following are my own views:
I ever heard people say that during the 1st and 15th Day of Chinese Month, important events and disasters tend to happen, true enough, the 2004 Tsunami happened on the 15th Day in November of the Chinese Calendar (Boxing Day in 2004). This is because on the 1st and 15th Day, there will always be high tide. So people usually avoid taking the ferry on these days.
Sometimes Chinese Calendar can be super accurate in predicting which day there will be heavy rain, I was surprised to see my Chinese Calendar predict that tonight there will be heavy rain and true enough it rained the whole day today. So the Chinese Calendar also functions as a weather forecaster here.
Funny side of it, I ever saw in the Chinese Calendar that says certain days are auspicious days to take a bath, don't we take a bath everyday and do we have to select an auspicious day to take a bath, muahaha.
I like to study the Chinese Calendar and I have a Chinese Calendar App in my mobile phone.
How about you, do you believe in Chinese Calendar?