Calgary is 8 hours behind Copenhagen
Best overlap: 4:00 PM to 6:00 PM in Copenhagen is 8:00 AM to 10:00 AM in Calgary.
Keep meetings inside 4:00 PM to 6:00 PM in Copenhagen — that maps to 8:00 AM to 10:00 AM in Calgary. Calgary is 8 hours behind Copenhagen, so you only get about 2 hours of overlap a day — worth locking in a standing time like 4:00 PM in Copenhagen (8:00 AM in Calgary) before it slips.