Indianapolis is 1 hour ahead of Chicago. Chicago uses Central Time (CT, UTC-6/-5) while Indianapolis uses Eastern Time (ET, UTC-5/-4). When it's 12:00 PM in Chicago, it's 1:00 PM in Indianapolis.
Both cities observe daylight saving time on the same schedule, so the 1-hour difference remains constant year-round.
Best calling time: 8:00 AM - 5:00 PM Chicago time. This corresponds to 9:00 AM - 6:00 PM in Indianapolis, covering standard business hours.
Chicago and Indianapolis are neighboring Midwestern cities with strong business connections. The drive between them is about 3 hours on I-65. Indianapolis is known for the Indianapolis 500 and pharmaceutical industry, while Chicago is a major financial and transportation hub.