Quote Originally Posted by catymag View Post
Save gmaptz.img in the Garmin folder on your device

Garmin will automatically determine your current time zone. From your location, it will calculate which time zone you are in, thanks to a small map file in the unit's memory. This is a nice feature if you frequently change time zones, because your GPS's time will update automatically.
Is there a list of units which support this feature? My 855 doesn't seem to....

TIA,
R.