Detroit is 1 hour ahead of Indianapolis. Indianapolis uses Eastern Time (ET, UTC-5/-4) while Detroit also uses Eastern Time but is in Michigan. Actually, both cities are in Eastern Time, so there is no difference. When it's 12:00 PM in Indianapolis, it's also 12:00 PM in Detroit.
Both cities observe daylight saving time on the same schedule, so they remain synchronized year-round.
Any time works! Since both cities share the same timezone, you can schedule calls during standard business hours (9:00 AM - 6:00 PM) without any time conversion needed.
Indianapolis and Detroit are major Midwest cities with strong automotive connections. Detroit is the historic center of the American auto industry, while Indianapolis is famous for the Indy 500. The drive between them takes about 4.5 hours.