Hong Kong is 13 hours ahead of Toronto during Eastern Standard Time (or 12 hours during EDT). Toronto uses Eastern Time (ET, UTC-5/-4) while Hong Kong uses Hong Kong Time (HKT, UTC+8). When it's 12:00 PM in Toronto, it's 1:00 AM the next day in Hong Kong.
Toronto observes daylight saving time while Hong Kong does not. This means the difference varies between 12 and 13 hours throughout the year.
Best calling time: 7:00 PM - 10:00 PM Toronto time. This corresponds to 8:00 AM - 11:00 AM in Hong Kong (during EST), catching morning business hours in Hong Kong.
Toronto has one of the largest Hong Kong diaspora communities outside Asia. Many Canadian banks and financial institutions have significant operations in Hong Kong, and there's strong business traffic between these two financial centers. Evening calls from Toronto reach Hong Kong's morning business hours.