I believe Sandi is correct. While at one time the part of Indiana that was in Eastern time did not observe daylight savings time and thus did not spring ahead or fall back, that is no longer the case. All of Indiana now observes DST which means all of Indiana will fall back on the designated date. So the two parts of Indiana that are in Central time (NW Indiana/Gary) (SW Indiana/Evansville) will remain one hour behind Indy.
Oh,and Tia, in the old days when DST was not observed in the Eastern time portion of Indiana, it would be now that your time and Indy time was the same. After the fall back, that was when there was an hour difference.
BobK/Orlando