Calendar Converter is a simple tool for converting a date in one calendar to the date(s) in the others by using the functions provided by macOS. The following calendars are supported. ?Gregorian ?Buddhist ?Chinese (Sexagenary cycle) ?Coptic ?Ethiopic ?Ethiopic (Amete Alem) ?Hebrew ?Indian National ?Islamic (Astronomical) ?Islamic (Tabular, Friday origin) ?Islamic (Tabular, Thursday origin) ?Islamic (Umm al-Qura) ?Japanese ?Persian ?Republic of China