This may or may not be useful, but Zeller's Congruence is just a cool 
thing - useful for validating leap years too, if you follow th logic:

http://en.wikipedia.org/wiki/Zeller's_congruence

Rolf

Brooke Clarke wrote:
> Hi:
>
> I'm looking for a couple of code snippets, one that will retrieve Sun, 
> Mon, Tue, Wed, Thu, Fri, Sat when given the day number and another that 
> will retrieve Jan, Feb. . . . Dec when given the month number.  These 
> will be used to display the ASCII strings on an LCD.  Also looking for 
> calendar code for leap year checking.
>
> Microchip App notes 582 and 587 have code for driving LCDs using the 
> 4-bit mode, but they are buggy.  Is there an app note that works with 
> the 4-bit mode?
>
> Thanks,
>
> Brooke
>
>   

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