Time zones of United States

United States
North America

Time zone of Aleutian Islands: UTC-10
HAST — Hawaii - Aleutian Standard Time

Time zone of Hawaii Islands: UTC-10
HAST — Hawaii - Aleutian Standard Time

Time zone of Alaska: UTC-9
AKST — Alaska Standard Time

Time zone of Alaska (summer time): UTC-8
Summer time: Start — second Sunday in March, End — first Sunday in November.

Time zone of Pacific USA: UTC-8
PST — Pacific Standard Time

Time zone of Pacific USA (summer time): UTC-7
Summer time: Start — second Sunday in March, End — first Sunday in November.

Time zone of Western USA: UTC-7
MST — Mountain Standard Time

Time zone of Western USA (summer time): UTC-6
Summer time: Start — second Sunday in March, End — first Sunday in November.

Time zone of Arizona: UTC-7
MST — Mountain Standard Time

Time zone of Central USA: UTC-6
CST — Central Standard Time

Time zone of Central USA (summer time): UTC-5
Summer time: Start — second Sunday in March, End — first Sunday in November.

Time zone of Eastern USA: UTC-5
EST — Eastern Standard Time

Time zone of Eastern USA (summer time): UTC-4
Summer time: Start — second Sunday in March, End — first Sunday in November.

Time zone of Eastern Indiana: UTC-5
EST — Eastern Standard Time