Hawaii-Aleutian Standard Time - HAST (GMT-10)
Hawaii-Aleutian Daylight Time - HADT (GMT-9)
Newfoundland Standard Time - NST (GMT-3:30)
Newfoundland Daylight Time - NDT (GMT-2:30)
Alaska Standard Time - AKST (GMT-9)
Alaska Daylight Time - AKDT (GMT-8)
Atlantic Standard Time - AST (GMT-4)
Atlantic Daylight Time - ADT (GMT-3)
Pacific Standard Time - PST (GMT-8)
Pacific Daylight Time - PDT (GMT-7)
Mountain Standard Time - MST (GMT-7)
Mountain Daylight Time - MDT (GMT-6)
Central Standard Time - CST (GMT-6)
Central Daylight Time - CDT (GMT-5)
Eastern Standard Time - EST (GMT-5)
Eastern Daylight Time - EDT (GMT-4)