Johannesburg is 1 hour ahead of Berlin (winter) or the same time (summer). When it's 12:00 PM in Berlin, it's 1:00 PM in Johannesburg (winter). South Africa does not observe DST.
Berlin uses CET/CEST while Johannesburg uses SAST (South Africa Standard Time).
Optimal window: 9:00 AM - 5:00 PM Berlin time works perfectly for Johannesburg business hours. The minimal time difference makes communication seamless.
Germany is one of South Africa's largest trading partners, with strong automotive industry ties.