Obviously, there is no overlapping trading time between Hong Kong and New York, as New York is 12 hours behind the Hong Kong market. The trading hours at Hong Kong Stock Exchange has two sessions. The auction session starts at 9:00 am, and ends at 9:30 am. Continuous trading sessions would be followed up after the auction session, starting from 9:30 am to 4:00 pm. New York Stock Exchange also opens from Monday through Friday 9:30 am to 4:00 pm. Neither of the stock exchanges have lunch breaks.