Melanie, I remember you bagging them in another RTC thread.
My use of Maxim/Dallas RTCs is 0.056 per year, but that figure might be rising

I wonder if the calender on the RTC can solve the problem of converting UTC time to a local time where the date is different for part of the day.
Best example is it's 1:00 am, 1st of March but to convert to local time I might
have to decrement the date and be left wondering if it is a leap year, etc.
Does the possibility exist of using the RTC to test for a valid date just by trying to set it?