UNITED STATES TIME ZONES

There are nine time zones in the United States. The time zones are as follows:

1. Atlantic Time Zone,
2. Eastern Time Zone,
3. Central Time Zone,
4. Mountain Time Zone,
5. Pacific Time Zone,
6. Alaska Time Zone,
7. Hawaii-Aleutian Time Zone,
8. Samoa Time Zone and
9. Chamorro Time Zone

US Time Zones Map

Current time in US Time Zones

Current Local Times and TimeZone by State

Daylight

As of 2007, Daylight Saving Time begins in the United States on the second Sunday of March and concludes on the first Sunday of November. This is due to the fact that during the warmer months, clocks are advanced so that darkness falls later.

Daylight Saving Time causes changes in the names and acronyms used to identify the current local time in each time zone.

Eastern Standard Time (EST) changes to Eastern Daylight Time (EDT), Mountain Standard Time (MST) becomes Mountain Daylight Time (MDT), and so on.

Exceptions to the US clock change rules

Arizona (except Navajo Indian Reservation), Puerto Rico, Hawaii, the US Virgin Islands, and American Samoa do not observe Daylight Saving Time.

When is dailight saving in 2025?

• Daylight Saving Time starts on Sunday, March 9 at 2:00 A.M. The clocks went forward by one hour.
• Daylight Saving Time ends on Sunday, November 2 at 2:00 A.M. The clock time will go back one hour.

How many time zones are there in the US?

The United States and its dependents are legally divided into nine time zones. Adding the time zones of two uninhabited US territory, Howland Island and Baker Island, raises the total number of time zones to 11. See the boundaries.