Indiana Time Zone

The Indiana Time Zone refers to the time zone division of Indiana, and to the state's historical response to the innovation of daylight saving time. The official dividing line between Eastern Time and Central Time has, over time, progressively moved west, from the Indiana–Ohio border, to a position where it divided Indiana down the middle, to the Indiana–Illinois border as it is today.

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The portions of the state observe the Central Time Zone while other portions observe the Eastern Time Zone.