(A) Central Standard Time shall be the official time within the city for the transaction of all city business, except that from 2:00 a.m. on the last Sunday in April in each year, official time for the city shall be advanced one hour, and at 2:00 a.m. on the last Sunday in October in each year such official time shall be returned to Central Standard Time by the deduction or retarding of one hour.
(B) All legal or official proceedings of the Mayor and City Council, and all official business of the city shall be regulated by the time herein established and when by ordinance, resolution, or action of any municipal officer or body, an act must be performed at or within a prescribed time, it shall be performed according to the official time herein prescribed.
(C) When the words "Daylight Savings" or "Daylight Savings Time" are used in any official documents or contracts, it shall be understood to have reference to the time herein fixed for the period from the last Sunday in April to the last Sunday in October in each calendar year.
('58 Code, § 1-V-7)