49 C.F.R. § 71.14 Chamorro Zone.
Title 49 - Transportation
The ninth zone, the Chamorro standard time zone, includes the Island of Guam and the Commonwealth of the Northern Mariana Islands. [68 FR 49712, Aug. 19, 2003]
Title 49: Transportation
PART 71—STANDARD TIME ZONE BOUNDARIES
§ 71.14 Chamorro Zone.