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Re: Julian Day Numbers

J.D. Smith (jdsmith@astro.cornell.edu) writes:
> IDL just cribbed the code from Numerical recipes, which itself cribbed
> the code from somewhere else.  They state: "A convenient reference
> points is that Julian Day 2440000 began at noon of May 23, 1968".  If
> you give that a try, you find IDL has correctly implemented the NR
> routine.  This leaves the question of the Astronomical Almanac.  Since
> virtually everyone agrees (there are hundreds of julian calculators on
> the net) on the julian scale but AA, we have to presume (horrors), that
> it is in error.

Maybe we should hand count the days until we get it right. :-)


David Fanning, Ph.D.
Fanning Software Consulting
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