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According to the U.S. Department of Transportation (49 CFR Subtitle A, Part 71: Standard Time Zone Boundries), the nine times zones of the U.S. are...
- Atlantic Zone (AST, UTC-4)
- Eastern Zone (EST/EDT; UTC-5/UTC-4)
- Central Zone (CST/CDT; UTC-6/UTC-5)
- Mountain Zone (MST/MDT; UTC-7/UTC-6)
- Pacific Zone (PST/PDT; UTC-8/UTC-7)
- Alaska Zone (AKST/AKDT; UTC-9/UTC-8)
- Hawaii-Aleutian Zone (HAST/HADT; UTC-10/UTC-9)
- Samoa Zone (SST; UTC-11)
- Chamorro Zone (ChST; UTC+10)
Some sources also show time zone information for the U.S. possessions of Wake Island (UTC+12) and Baker and Howland Islands (UTC-12), but these are not mentioned in the 2010 revision of the official document.
What else can I help you with?
How many time zones are there on the mainland of the US?
I'm thinkin' four
Does Canada or the US have six time zones?
Canada has six time zones, while the contiguous United States has four time zones (Eastern, Central, Mountain, and Pacific).
Name the time zone of the continental US?
There are several time zones in the continental US. Eastern, Central, Mountain, Arizona, Pacific, and Alaska.
What year were time zones created in the US?
Time zones were officially established in the US on November 18, 1883 by the railroads in order to standardize schedules. This was known as the Standard Time Act, which divided the US into four time zones: Eastern, Central, Mountain, and Pacific.
Why did the railroads initially divide the US four standard time zones?
to make their schedules more standard
Who derived the four time zones in the US?
Originally Railroads.
What are the names of the regular time zones?
In the continental US, the four zones are Eastern, Central, Mountain and Pacific.
What are four time zones of the US?
pacific, eastern, central, mountain
How many time zones are there on the mainland of the US?
I'm thinkin' four
Why did the railroads initially divided the united States into four standard time zones?
The railroads divided the US into four standard time zones to make their schedules more standard.
Does Canada or the US have six time zones?
Canada has six time zones, while the contiguous United States has four time zones (Eastern, Central, Mountain, and Pacific).
Name the time zone of the continental US?
There are several time zones in the continental US. Eastern, Central, Mountain, Arizona, Pacific, and Alaska.
What year were time zones created in the US?
Time zones were officially established in the US on November 18, 1883 by the railroads in order to standardize schedules. This was known as the Standard Time Act, which divided the US into four time zones: Eastern, Central, Mountain, and Pacific.
Why did the railroads initially divide the United states into four standard time zones?
The railroads divided the US into four standard time zones to make their schedules more standard.
The railroads affected even the organization of time in the US by?
By introducing four standard time zones across the country.
What industry divided the US into four time zones without consent of the federal government?
The railroads
Why did the railroads initially divide the US into four time zones?
to make their schedules more standard
