There is no time difference between Oslo and Berlin. Both cities use Central European Time (CET/CEST). When it's 12:00 PM in Oslo, it's also 12:00 PM in Berlin.
Both cities observe daylight saving time on the same schedule, so they remain synchronized year-round.
Any time works! Since both cities share the same timezone, you can schedule calls during standard business hours (9:00 AM - 5:00 PM) without any time conversion needed.
Oslo and Berlin are both major Northern European capitals with strong business and cultural ties. Direct flights take about 1.5 hours, making day trips possible for business meetings.