<P> In Antarctica, the US research facility Palmer Station is in UTC − 03: 00, while McMurdo Station and Amundsen--Scott South Pole Station use UTC + 12: 00 in order to coordinate with their main supply base in New Zealand . </P> <P> (Described from north to south along each boundary .) </P> <Ul> <Li> roughly follows the border between Wisconsin (to the south and west) and the Upper Peninsula of Michigan (to the north and east); the Upper Peninsula counties that border Wisconsin (namely Gogebic, Iron, Dickinson, and Menominee counties) observe CT, all other counties in the U.P. observe ET </Li> <Li> follows Lake Michigan </Li> <Li> divides a small portion of Northwestern Indiana near Chicago from the rest of the state </Li> <Li> follows the border between Illinois (west) and Indiana (east) </Li> <Li> divides a small portion of Southwestern Indiana from the rest of the state </Li> <Li> divides Kentucky in half roughly along a line that is west of Louisville, Kentucky running from northwest to southeast . </Li> <Li> divides the region legally defined as East Tennessee, except for four counties adjoining Middle Tennessee, from the rest of Tennessee . </Li> <Li> follows the border between Alabama (west) and Georgia (east) </Li> <Li> divides the Florida Panhandle along the Apalachicola River and Intracoastal Waterway just west of Tallahassee, Florida . </Li> </Ul> <Li> roughly follows the border between Wisconsin (to the south and west) and the Upper Peninsula of Michigan (to the north and east); the Upper Peninsula counties that border Wisconsin (namely Gogebic, Iron, Dickinson, and Menominee counties) observe CT, all other counties in the U.P. observe ET </Li>

Where does the time zone change on the east coast
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