DaveJ: Most of the state of Indiana doesn't change; however, some parts of the state do change because they're near major metropolitan areas in other states with other time-zone habits. Here are the details, copied from this page (scroll down to see the map and chart at the bottom of this page as well); this oughta make it as clear as mud: http://webexhibits.org/daylightsaving/f.html


By State Law, most of Indiana is on Eastern Standard Time (EST) all year long.

The statute creates three different time arrangements in the Hoosier State:
1. 77 counties (including state capital Indianapolis) are in the Eastern Time Zone but do not change to Daylight time in April; instead they remain on Standard Time all year long; [yellow on map and chart]
2. 10 counties -- five near Chicago, IL, and five near Evansville, IN, are in the Central Time Zone and use both Central Standard and Central Daylight; [green on map and chart] and
3. Five other counties -- two near Cincinnati, OH, and three near Louisville, KY -- are in the Eastern Time Zone but use both Eastern Standard and Eastern Daylight. [pink on map and chart]

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What Time Is It When It's Noon in Indiana's Capital?

1. Central Indiana (Indianapolis, and most of Indiana, including Bloomington) = Noon, Eastern Standard Time (EST) all year

2. Western portions of Indiana (near Chicago, IL – Jasper, Lake, LaPorte, Newton, and Porter counties; also Evansville, IN and Gibson, Posey, Spencer, Vanderburgh, and Warrick counties) = 11:00 AM, Central Standard Time (CST) during US standard time; Noon, Central Daylight Time (CDT) during US Daylight Saving Time

3. Eastern portions of Indiana (near Cincinnati, OH – Dearborn and Ohio counties; and near Louisville, KY – Clark, Floyd and Harrison counties) = Noon, EST; 1:00 PM EDT

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Many believe that Indiana changes time zones in the Summer. Part of the confusion stems from the fact that in the Winter, most of Indiana is the same time as New York (which is also Eastern), and in the Summer, Indiana is the same time as Chicago (which is Central).

Actually, by going to Daylight time in April, the Central Zone Springs ahead from Central Standard (CST) to Central Daylight (CDT), which is the same as Eastern Standard (EST) (Indiana time). By switching from Eastern Daylight (EDT) to Standard in October, the rest of the Eastern Zone falls back to EST (Indiana time). [The rest of] Indiana, [plus] Arizona and Hawaii are constants -- always Standard time.

Courtesy the Monroe County Community School Corporation, Bloomington, IN 47401. Please send questions or comments specifically about Indiana to webmaster@mccsc.edu.