What Are the U.S. Time Zones?
To obtain
Atlantic Daylight Time
subtract 3 hours from UTC
Atlantic Standard Time
subtract 4 hours from UTC
Eastern Daylight Time
subtract 4 hours from UTC
Eastern Standard Time
subtract 5 hours from UTC
Central Daylight Time
subtract 5 hours from UTC
Central Standard Time
subtract 6 hours from UTC
Mountain Daylight Time
subtract 6 hours from UTC
Mountain Standard Time
subtract 7 hours from UTC
Pacific Daylight Time
subtract 7 hours from UTC
Pacific Standard Time
subtract 8 hours from UTC
Alaska Daylight Time
subtract 8 hours from UTC
Alaska Standard Time
subtract 9 hours from UTC
Hawaii-Aleutian Daylight Time
subtract 9 hours from UTC
Hawaii-Aleutian Standard Time
subtract 10 hours from UTC
Samoa Standard Time
subtract 11 hours from UTC
