Adding Time and Date

[hoffman at hdsvx1.UUCP]

> Is there also a simple routine that will allow me to calculate
> what day of the week an arbitrary date falls on?
> 
> 			Bruce

Real simple.  Just take any day as a reference point, note its Julian
Day and the day of the week on which it fell.  To find the day of the
week for some other day, take the difference between the two Julian
Days, mod 7.
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