Convert Calendar Dates

Our Julian Date Converter helps you convert between standard calendar dates and Julian dates. This is particularly useful for:

  • Astronomical calculations
  • Scientific research
  • Historical date analysis
  • Database time tracking
  • Satellite operations

How to Use Our Julian Date Converter

  1. Enter a Gregorian calendar date (year, month, day)
  2. Get the corresponding Julian date
  3. Or enter a Julian date
  4. Get the corresponding Gregorian calendar date
  5. View additional time information

The calculator provides:

  • Julian Date (JD)
  • Modified Julian Date (MJD)
  • Reduced Julian Date (RJD)
  • Truncated Julian Date (TJD)

Note: The Julian Date system counts continuous days from noon on January 1, 4713 BCE (on the Julian calendar). This system is widely used in astronomy and computer programming for precise time calculations.

Julian Date Converter