There is no time difference between Atlanta and Charlotte. Both cities use Eastern Time (EST, UTC-5 in winter and EDT, UTC-4 in summer). When it's 9:00 AM in Atlanta, it's also 9:00 AM in Charlotte.
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 - 5:00 PM) without any time conversion needed.
Atlanta and Charlotte are both major business hubs in the Southeast United States. The drive between them is about 4 hours, and flights take just over an hour.