Montreal is 7 hours behind Doha
Best overlap: 3:00 PM to 6:00 PM in Doha is 8:00 AM to 11:00 AM in Montreal.
3:00 PM to 6:00 PM in Doha is when Montreal is also working, at 8:00 AM to 11:00 AM their time. Montreal is 7 hours behind Doha. That leaves about 3 hours of common time — enough for a meeting or two, so use it deliberately. Because only Montreal changes its clocks, the overlap above isn't fixed; expect a one-hour shift when Montreal enters or leaves daylight saving.