Julian Day Number (JDN) calculations

Day counting (numbering) is a useful method to add and subtract dates, and for data storage of dates. Day counters can easily be changed to counters of seconds or other units.

Input type:
Input value:

Output result:

Gregorian Date: -
Julian Date: -
eXtended Day Number (XDN): -
Julian Day Number (JDN): -
Rationalized Day Number (RDN): -
Modified Julian Day (MJD): -
Day of Week: -
Gregorian Day of Year: -
Gregorian Week of Year: -

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