Six counties near Chicago (Lake, Porter, LaPorte, Jasper, Newton and Starke) and six counties near Evansville (Posey, Vanderburgh, Warrick, Spencer, Gibson and Pike) were placed in the central time zone respecting daylight saving time. In the late 1940s, the use of daylight saving time, known as fast time, became popular in cities. Indiana is officially in the central time zone, but some communities choose to follow fast time throughout the year, essentially aligning with the Eastern time zone. Although it began as a Central Time state, Eastern Time has been dominant in Indiana since the early 1970s.
Following the Fulton County bus stop accident that killed three children in late October, Indiana lawmakers are resuming debate on changing Indiana to Central Time across the state.