Montreal is 7 hours behind Riyadh
Best overlap: 3:00 PM to 6:00 PM in Riyadh is 8:00 AM to 11:00 AM in Montreal.
Book within 3:00 PM to 6:00 PM Riyadh time (8:00 AM to 11:00 AM in Montreal) and both teams will be at work. Montreal is 7 hours behind Riyadh, so the practical overlap is about 3 hours — generous enough for meetings, tight enough to be worth booking ahead. Don't be caught out by clock changes — Montreal observes daylight saving and Riyadh doesn't, so the offset varies by an hour through the year.