Julian Calendar Converter 2025

Julian Calendar Converter 2025. This utility converts from calendar date and time to julian date, and vice versa. The calculator converts a gregorian date to a julian date.

Enter a valid date or julian date, and click ‘convert’. Julian dates (abbreviated jd) are simply a contiguous count of days and fractions since noon universal time on 1st january, 4713 bce (on the julian calendar).