Julian Date Calendar 2025 Converter

Julian Date Calendar 2025 Converter. Julian dates (abbreviated jd) are simply a continuous count of days and fractions since noon universal time on january 1, 4713 bc (on the julian calendar). It took effect the following year, 45 bc (709 auc), and continued to be used as the civil.

The julian calendar is a reform of the roman calendar introduced by julius caesar in 46 bc (708 auc). The calculator below transforms the date from the gregorian calendar to julian and vice versa.