Atlanta is 6 hours behind Geneva
Best overlap: 2:00 PM to 6:00 PM in Geneva is 8:00 AM to 12:00 PM in Atlanta.
Target 2:00 PM to 6:00 PM in Geneva, which lands at 8:00 AM to 12:00 PM for the Atlanta side. A 4-hour overlap gives you a workable daily window; aim for earlier in it to avoid clipping the end of someone's day.