The Chinese Calendar:
Dates of New Years, Dark Moons
and Solar Terms

Hermetic Systems

Windows Software for Chinese Calendar date conversion
and for the scholarly study of the Chinese Lunisolar Calendar

This software is fully-functional and not time-limited.  It runs on any version of Windows.

Click here for how to get this software by donation.

The Chinese Calendar tells you about upcoming Chinese new years and converts Chinese and European calendar dates (and also dates in the Archetypes Calendar). It provides exact times of dark moons and solar terms and is thus an indispensible tool for any serious study of the Chinese Calendar.

Here is a typical screenshot (with longitude 120°E for the Chinese Calendar selected):


The Chinese Calendar screenshot

When the cursor is over a date a small box appears with a verbose expression of that date, as shown below.

Tooltip text



The Chinese Calendar software can be used:


Click on this link for
The User Manual



"The Best Chinese Calendar Software"

Many people try to write a program for the Chinese calendar without first really understanding the astronomical rules. The author of this program has done his homework, and the result is impressive.

Since the Chinese calendar is very complex, and this program does not shy away from the details, it may seem overwhelming to a casual user. But if power, accuracy and reliability are important, this is the program for you.

If you are interested in doing careful analysis of the Chinese calendar, for historical, astronomical or astrological purposes, there is no other alternative.

— Helmer Aslaksen, Professor of Mathematics, Singapore National University