A. The satellites report current time in universal time (Greenwich Mean Time). Your local time is behind or ahead of Universal time depending on where you are in relation to Greenwich, England. All GARMIN GPS units display universal time on the System Setup Page. Subtract (if you are west of Greenwich, England) or add (if your are east of Greenwich, England) the amount of hours difference between your local time and Universal Time, and enter that amount into the appropriate field on the set up page labeled "Local Offset". A chart is provided in your user's manual to assist you in determining the appropriate value for local offset in your area.