Stockholm is 5 hours ahead of Montevideo
Best overlap: 8:00 AM to 1:00 PM in Montevideo is 1:00 PM to 6:00 PM in Stockholm.
Your shared working hours run 8:00 AM to 1:00 PM in Montevideo (1:00 PM to 6:00 PM in Stockholm). Stockholm is 5 hours ahead of Montevideo. That leaves about 5 hours of common time — enough for a meeting or two, so use it deliberately. Just remember Stockholm changes its clocks for daylight saving and Montevideo doesn't, so confirm the overlap whenever the seasons turn.