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Ontario is divided among a part that switches between Central Standard Time and Central Daylight Saving Time (CST/CDT or UTC-6/UTC-5), two areas that stay on Eastern Standard Time (EST or UTC-5) all year, and a part that switches between Eastern Standard Time and Eastern Daylight Saving Time (EST/EDT or UTC-5/UTC-4). Hawaii is on Hawaii-Aleutian Standard Time (HAST or UTC-10) all year.

CST is four hours ahead of HAST.
CDT and EST are five hours ahead of HAST.
EDT is six hours ahead of HAST.

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8y ago

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