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