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PyGnomon
PyGnomon is a software for calendrical calculations with multiple calendars, i.e. Gregorian, Julian etc....
calculations Gregorian calendrical calculations Gregorian calculations Julian calculations
HTML::CalendarMonth::DateTool
Base class for determining which date package to use for calendrical calculations....
DateTime::Event::Chinese
DateTime Extension for Calculating Important Chinese Dates...
calculations Perl module Chinese calendrical calculations calendrical