Johannesburg is 1 hour ahead of Geneva
Best overlap: 8:00 AM to 5:00 PM in Geneva is 9:00 AM to 6:00 PM in Johannesburg.
Both teams are at their desks between 8:00 AM to 5:00 PM in Geneva and 9:00 AM to 6:00 PM in Johannesburg. A 9-hour overlap gives you real choice here — early or late in the window both work comfortably. Note the seasonal wrinkle: when Geneva is on daylight saving and Johannesburg isn't, the gap between them grows or shrinks by an hour.