Yes. Don't consider me an expert in the api for the rtc but it seemed that on startup if I just opened and then called calendarTimeGet repeatedly, I always got the same time back. It wasn't until I performed the sequence open, calendarTimeGet, calendarTimeSet that the rtc appears to finally start updating with repeated calls to calendarTimeGet. The only time lost may be from the time between the first open to set - not sure if the open or powerup is what causes it to stop momentarily. Maybe we'll both learn something new here...
Tim