Vancouver is 9 hours behind Oslo
Best overlap: 5:00 PM to 6:00 PM in Oslo is 8:00 AM to 9:00 AM in Vancouver.
The overlap falls at 5:00 PM to 6:00 PM in Oslo, or 8:00 AM to 9:00 AM if you're in Vancouver. There's roughly 1 hour to share, so keep agendas lean and meet at 5:00 PM in Oslo (8:00 AM in Vancouver) to use every minute.