Julian-Gregorian-Dee Date Calculator

Windows software to convert between Julian, Gregorian, Dee and Dee-Cecil calendar dates in various formats, and to add and subtract a number of days, weeks, months and years to or from a given date. Also displays a sequence of Gregorian and Dee (or Dee-Cecil) dates, and dates and times of vernal equinoxes in the Gregorian and Dee(-Cecil) calendars. Times of vernal equinoxes may be calculated on the basis either of mean solar time or apparent solar time.
LicenseFree to try
File Size1.57 MB
Operating System Windows NT Windows 8 Windows Server 2008 Windows 10 Windows 2003 Windows 98 Windows Windows Me Windows XP Windows 2000 Windows Vista Windows 7