Chinese Calendrics
The Chinese Lunar Calendar is a solilunar calendar, consisting of months corresponding exactly to lunar cycles and years which stay more-or-less in sync with seasonal years. The structure of the calendar depends on the exact times of certain astronomical events, principally dark moons and winter... Chinese Calendrics is used to do the following: To convert between dates in the Chinese solar and lunar calendars and dates in the Common Era and Julian calendars. ... To calculate the phase of the Moon for any time within a 6000-year period.
http://www.hermetic.ch/chcal/chcal_setup.zip - 2Mb - Download - Screenshot