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Testimonials |
Chinese Calendrics not only converts between Chinese and European dates, it is also an indispensible tool for the study of the structure of the Chinese Calendar. Here is a sample screenshot:
When the cursor is over a date a small box appears with a verbose expression of that date, as shown below.
This Chinese Calendrics software can be used:
- To get the current date in the Chinese Calendar.
- To convert between dates in the Chinese solar and lunar calendars and dates in the Common Era (Gregorian) and Julian calendars.
- To calculate the date of New Year's Day in the Chinese lunar calendar.
- To ascertain the Western dates of the starts of all lunar months in a Chinese year.
- To find leap months in the lunar calendar.
- To find the Western dates corresponding to Chinese anniversaries (e.g., birthdays).
- To move forward or backward from a given date (and time) either by a period such as a month (Western or Chinese) or by any number of days.
- To calculate the phase of the Moon for any time within a 6000-year period.
- To search for the next or previous full moon, dark moon, lunar quarter, solar term or solstice or equinox of a certain type.
- To search for a solstice or an equinox in combination with a dark moon or a full moon.
- To search for the next or previous (relative to any given date) day , month or year with a certain element-animal correspondence (e.g., the next water-rabbit year or the next fire-dragon day).
- To search for the next or previous day with the same element-animal for the day and the month.
- To search for the next or previous day with a certain element-animal for the day, month and year (e.g., the next fire-dog day in a wood-rat month in a water-ox year).
- To find days for which the element-animal is the same for day, month and year.
- To study the effect of changes in the prime meridian (120 degrees East, 116, 109, etc.) on the calendar.
How to obtain the software: A demo version of Chinese Calendrics can be downloaded from this website. Click on the link below for further information:
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Refund: A refund will be provided promptly up to 30 days after purchase if the software does not perform satisfactorily.
Updates: Purchasers of a user license for this software are entitled to an update to any later version at no additional cost.
Acknowledgements: This software was developed by Peter Meyer in 2003 and revised in 2004 and 2008. For the theory of the Chinese Calendar he relied mostly on Prof. Helmer Aslaksen's The Mathematics of the Chinese Calendar and to a lesser extent on L. E. Doggett's Calendars and Claus Tøndering's The Chinese Calendar. The dark moon times are calculated using a translation into C of a FORTRAN routine which was originally written by astronomer Robert van Gent (based on astronomer Jean Meeus's Astronomical Algorithms, Willmann-Bell Inc. Richmond, 1991, pp. 319-324 & 349-358). Thanks to Robert van Gent for providing the FORTRAN routine. The calculation of the solstices and equinoxes is based on formulas by Jan Meeus. The calculation of the times of the solar terms is based on the solstice and equinox times so calculated and on a translation into C of a FORTRAN routine for the geocentric longitude of the Sun which was also originally written by Robert van Gent.
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