how to calculate julian date

Because the starting point or reference epoch is so long ago, numbers in the Julian day can be quite large and cumbersome. Go to source. Coming back to this one now… long delay. A formula for determining the year of the Julian Period given its character involving three four-digit numbers was published by Jacques de Billy in in the Philosophical Transactions of the Royal Society its first year. Question feed. That paper gives algorithms in Fortran. Not sure, if you are looking at a complete Julian date calendar, then following approach will not help you.

HOW TO CALCULATE JULIAN DATE / janiceclark.net

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