Copenhagen is 3 hours behind Karachi
Best overlap: 11:00 AM to 6:00 PM in Karachi is 8:00 AM to 3:00 PM in Copenhagen.
For a call that suits both sides, look at 11:00 AM to 6:00 PM in Karachi / 8:00 AM to 3:00 PM in Copenhagen. With 7 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works. Because Copenhagen and Karachi don't both observe daylight saving, plan to re-check the overlap around March and November.