> Would the attached seconds to period routine be of any help?

Thanks, I'll tuck that away for now, for future reference

> Microchip also have time to day code in one of their RTC and Mass
> storage articles

Yes, I used that several years ago. Works well. So does the date-
to-day-name routine. I wrote my own long period timer based primarily
on minutes, with a small routine tacked on later to extend that to
seconds

Joe

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