Arizona Revised Statutes Title 1. General Provisions § 1-242. Standard time

A. The standard time in Arizona shall be the solar time of the one hundred fifth meridian west of Greenwich, commonly known as standard mountain time.

B. This section shall not be construed to affect the standard time established by United States law governing the movements of common carriers engaged in interstate commerce or the time for performance of an act by an officer or department of the United States, as established by a statute, lawful order, rule or regulation of the United States or an agency thereof.

C. Notwithstanding any other provision of law to the contrary by the United States government relating to adoption of daylight saving time by all of the states, the state of Arizona elects to reject such time and elects to continue in force the terms of subsection A, relating to standard time in Arizona.

D. The rejection of daylight saving time as provided for in this section may be changed by future legislative action.