<Tr> <Td> Other colors </Td> <Td> UTC − 05: 00 </Td> <Td> UTC − 04: 00 </Td> <Td> Eastern Time </Td> </Tr> <P> The U.S. state of Indiana is divided between Eastern and Central time zones . The official dividing line has moved progressively west from its original location on the Indiana--Ohio border, to a position dividing Indiana down the middle, and finally to its current location along much of the Indiana--Illinois border . Being on the western frontier of the Eastern time zone resulted in opposition from many in the state to observing daylight saving time for decades . The 2005 decision by the Indiana General Assembly to implement daylight saving time remains controversial . </P> <P> Indiana observes Eastern Time, except for twelve of its ninety - two counties, which observe Central Time . Six of these counties are in northwestern Indiana, near Chicago (which observes Central Time), and six are in southwestern Indiana, near Evansville, where the metro area includes portions of southeastern Illinois and western Kentucky, which also observe Central Time . The twelve counties are: </P> <Ul> <Li> Northwestern Indiana (Chicago - Gary metropolitan area): <Ul> <Li> Jasper </Li> <Li> Lake </Li> <Li> LaPorte </Li> <Li> Newton </Li> <Li> Porter </Li> <Li> Starke </Li> </Ul> </Li> <Li> Southwestern Indiana (Evansville Metro Area): <Ul> <Li> Gibson </Li> <Li> Perry </Li> <Li> Posey </Li> <Li> Spencer </Li> <Li> Vanderburgh </Li> <Li> Warrick </Li> </Ul> </Li> </Ul>

Where does the eastern time zone start in indiana
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