#1) Even on the Nav equipped Prius, the dash clock is not connected to the GPS. #2) You can offset the time on the dash clock and it stays offset. Any common WWV clock would synchronize to the actual time. #3) That leaves this option. Tom
I still have an uncommonly accurate clock on my 2007 Prius. I've now gone through 10 standard time/daylight savings time changes, and the only thing I have had to adjust is the hour number. Haven't had to change the minutes number ever. * * * * * * * * I wish the radio buttons and controls would work as well as the clock.