What is the time difference between Hawaii and Toronto?

Hawaii (Honolulu) is in the Hawaii-Aleutian Time Zone (HAST) and currently observes UTC−10:00. Toronto is in the Eastern Time Zone (ET) and currently observes UTC−05:00. Therefore, the time difference between Hawaii and Toronto is UTC−05:00 − UTC−10:00 = +05:00, which means Toronto is 5 hours ahead of Honolulu.