Calgary is 2 hours ahead of Anchorage
Best overlap: 8:00 AM to 4:00 PM in Anchorage is 10:00 AM to 6:00 PM in Calgary.
Shoot for 8:00 AM to 4:00 PM in Anchorage; your Calgary colleagues will see that as 10:00 AM to 6:00 PM. The overlap is wide at 8 hours, so you can protect mornings for deep work and still find plenty of meeting time.