The Canadian dollar is available to trade 24 hours a day, five days a week – from 10pm (GMT) on Sunday evening to 10pm (GMT) on Friday night.
The best time of day to trade CAD will depend on which pairing you decide to focus on. As a rule, each pair will see the most movement when its sessions overlap, but this is less of a concern for the most traded CAD pair, as USD/CAD shares most of the same timezones.