Most of Arizona and Hawaii don't use DST. In addition the uninhabited atolls of Baker Island (AoE) and Wake Island (WAKT) add to the time zone count, making 11 the total number of time zones in the US.Īlmost all states in the US use Daylight Saving Time (DST). There are 9 official time zones according to the law. The time zones in the law are defined by their offset from Coordinated Universal Time (UTC). Code, Title 15, Chapter 6, Subchapter IX - Standard Time. Time zones in the USA are defined in the U.S. Since 1967, the US Department of Transportation (DOT) has been responsible for governing time zones in the country. The US was divided into 4 standard time zones on November 18, 1883, and jurisdiction for the zones was given to the Interstate Commerce Commission (ICC). Convert time between multiple locations, check timezone time, city time, plan travel time, flight arrival time, conference calls and webinars across all time zones. Time Zones Being Used in Dependencies of United States Offset View, compare and convert GMT-7 to EST Convert Greenwich Mean Time to Eastern Standard Time (North America) Time zone, daylight saving time, time change, time difference with other cities.

They will become active again after the next clock change as Daylight Saving Time begins or ends. The above time zones are used during other parts of the year. Time Zones Not Currently Being Observed in United States Offset Note: Local time in these time zones changes when Daylight Saving Time begins and ends. In practice, this means that the local time in these time zones changes when DST begins and ends. For example, Eastern Time (ET) refers to Eastern Standard Time (EST) or Eastern Daylight Time (EDT), depending on which is currently in use. List of time zones America/Atka, Hawaii-Aleutian Standard Time, -10 Etc/GMT+10, GMT-10:00, -10 HST, Hawaii Standard Time, -10 Pacific/Fakaofo, Tokelau Time. Then, the next time to the east spans 7.5E to 22.5E. This means the Prime Meridian time zone spans from 7.5W to 7.5E. (3602415) The Prime Meridian ( Greenwich Meridian) defines the center of the first time zone in the world. List of Time Zones and Abbreviations BST, Bangladesh Standard Time, GMT+6:00 VST, Vietnam Standard Time, GMT+7:00 CTT, China Taiwan Time, GMT. The time zones in the contiguous US are often referred to by their generic name, without making a difference between standard time and Daylight Saving Time designations. Because the Earth rotates 360 every 24 hours, each time zone is 15 longitude apart from the other. Generalized Time Zones in United States Time Zone Abbreviation & Name Since Howland Island and Baker Island constitute the world's westernmost landmasses in relation to the International Date Line, making them the last places on Earth where any date exists, they are sometimes assigned a theoretical 12th time zone called Anywhere on Earth (AoE). Time now in world cities and GMT/UTC time difference (offset) Current time in major world cities. As neither Hawaii nor the 5 dependencies use Daylight Saving Time (DST), there are only 6 corresponding DST time zones. In addition, Alaska, Hawaii, and 5 US dependencies all have their own time zones.

The contiguous US has 4 standard time zones. However, adding the time zones of 2 uninhabited US territories, Howland Island and Baker Island, brings the total count to 11 time zones. There are 9 time zones by law in the USA and its dependencies.

Time Zones Currently Being Used in United States Offset Business Date to Date (exclude holidays).For example, this United States time zone map shows the six designated time zones including Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian time zones. Time zones can have names to help easily identify them.

Gmt 7 time zone