As others have mentioned, changes you make to the time don't stick. My clock is always off an hour. Someone suggested changing the time zone setting to compensate for this. I've tried multiple time zones and the clock is always off an hour (either fast or slow). Any other Florida Ottonavi owners figure out what time zone we should use? The GPS clock is always correct (obviously).
Must have something to do with daylight savings, maybe it'll show the right time in winter? It annoys me too!
Yes, my Ottonavi HU has same issue and I just offset the time zone on the system clock to work around the issue.
Same problem, and solution, with the Advent unit (Primo navigation). Must be an issue with the way Primo handles DST. I didn't have the problem before I switched to Primo.