Ottawa is 8.5 hours behind Tehran
Best overlap: 5:00 PM to 6:00 PM in Tehran is 8:30 AM to 9:30 AM in Ottawa.
Both teams are at their desks between 5:00 PM to 6:00 PM in Tehran and 8:30 AM to 9:30 AM in Ottawa. You've got roughly 1 hour — enough for a focused daily check-in if you hold it at 5:00 PM in Tehran (8:30 AM in Ottawa). A quick caveat — Ottawa's clocks move for daylight saving and Tehran's don't, so the times here are right for only part of the year.