Julian Date Converter Convert between Gregorian calendar dates and Julian Day Numbers (JDN). Gregorian → JDN JDN → Gregorian Enter Gregorian Date and Time: Convert to Julian Day Number Conversion Results Julian Day Number (JDN): Modified Julian Date (MJD): Download PDF Enter Julian Day Number (e.g., 2460123.5): Convert to Gregorian Date Gregorian Conversion Result Gregorian Date: Download PDF
