Ottawa is 2 hours behind Montevideo
Best overlap: 10:00 AM to 6:00 PM in Montevideo is 8:00 AM to 4:00 PM in Ottawa.
Your shared working hours run 10:00 AM to 6:00 PM in Montevideo (8:00 AM to 4:00 PM in Ottawa). Ottawa is 2 hours behind Montevideo, and with 8 hours of overlap you can even run back-to-back calls without stepping outside business hours. Watch the DST gap — when Ottawa changes its clocks and Montevideo stays the same, this window slides by an hour.