How many time zones are there between Montreal and Rome?

Answer 1

Montreal, Canada, is in the -5 time zone, whereas Rome, Italy, is in the +1 time zone. Therefore, there are 5 time zones in between Montreal and Rome, being the -4, -3, -2, -1 and +-0 time zones that are between, and not including, those of the two cities.

Answer 2

There is a 5-hour time difference between Montreal, Canada (Eastern Time Zone) and Rome, Italy (Central European Time Zone).