§71.5. Boundary line between eastern and central zones. — Inbound Citations

The second zone, the eastern standard time zone, includes that part of the United States that is west of 67°30″ W. longitude and east of the boundary line described in § 71.5, and includes all of the State of Maine, but does not include any part of the Commonwealth of Puerto Rico.

(a) The third zone, the central standard time zone, includes that part of the United States that is west of the boundary line between the eastern and central standard time zones described in § 71.5 and east of the boundary line between the central and mountain standard time zones described in § 71.7.