Hamburg is 4 hours ahead of Rio de Janeiro
Best overlap: 8:00 AM to 2:00 PM in Rio de Janeiro is 12:00 PM to 6:00 PM in Hamburg.
Shoot for 8:00 AM to 2:00 PM in Rio de Janeiro; your Hamburg colleagues will see that as 12:00 PM to 6:00 PM. This is one of the easier pairings: 6 hours of shared time means flexible, low-stress scheduling. Don't be caught out by clock changes — Hamburg observes daylight saving and Rio de Janeiro doesn't, so the offset varies by an hour through the year.