where is the time zone change from eastern to central
Eastern Time Zone The boundary between time zones is set forth in the Code of Federal Regulations, with the boundary between the Eastern and Central Time Zones being specifically detailed at 49 CFR 71.[6]
Time in Australia Australia uses three main time zones: Australian Western Standard Time (AWST; UTC+08:00), Australian Central Standard Time (ACST; UTC+09:30), and Australian Eastern Standard Time (AEST; UTC+10:00).[1] Time is regulated by the individual state governments,[2] some of which observe daylight saving time (DST). Australia's external territories observe different time zones.