Reykjavik is 5 hours ahead of Montreal
Best overlap: 8:00 AM to 1:00 PM in Montreal is 1:00 PM to 6:00 PM in Reykjavik.
Your shared working hours run 8:00 AM to 1:00 PM in Montreal (1:00 PM to 6:00 PM in Reykjavik). Because Reykjavik is 5 hours ahead of Montreal, the 5-hour overlap is your golden hours — 8:00 AM in Montreal maps to 1:00 PM in Reykjavik for a dependable slot. Heads up: because Montreal changes its clocks and Reykjavik doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.