Lathem ATX - Manual (Page 7)

ATX Installation and User’s Guide
Page 2
3. Set Time Zone: Press and release the Set button for less than 1
second. The Time Zone will flash on the display. Use the Up or
Down buttons to select the proper Time Zone (see list of zones
below) and press Set.
Available Time Zones
Time Zone Offset Display
Atlantic Time -4Hrs
Eastern Time -5Hrs
Central Time -6Hrs
Mountain Time -7Hrs
Pacific Time -8Hrs
Alaska -9Hrs
Hawaii -10Hrs