Code of Federal Regulations Title 49. Transportation § 49.71.1 Limits defined;  exceptions authorized for certain rail operating purposes only

(a) This part prescribes the geographic limits of each of the nine standard time zones established by section 1 of the Standard Time Act, as amended by section 4 of the Uniform Time Act of 1966 (15 U.S.C. 261). The Uniform Time Act also contains lists of operating exceptions granted for specified rail carriers, whose operations cross the time zone boundaries prescribed by this part. (15 U.S.C. 265).

(b) Any rail carrier whose operations cross a time zone boundary prescribed by this part may apply for an operating exception to the General Counsel, Department of Transportation, Washington, DC 20590. However, each rail carrier for which an operating exception is granted shall, in its advertisements, time cards, station bulletin boards, and other publications, show arrival and departure times in terms of the standard time for the place concerned.

(c) The time zones established by the Standard Time Zone Act, as amended by the Uniform Time Act of 1966, are Atlantic, eastern, central, mountain, Pacific, Alaska, Hawaii–Aleutian, Samoa, and Chamorro.