Okla. Stat. tit. 47, § 47-1116v3: Registration periods

A. Twelve registration periods shall be established for

vehicles required to be registered on a staggered basis. The

registration periods shall start on the first day of each calendar

month and shall end on the last day of that month. Unless otherwise

provided, all such vehicles where the date of execution of transfer

of ownership occurs in this state at any time during a calendar

month shall be subject to registration and payment of the fee for

the registration period commencing the first day of the month of

such date of execution of transfer.

B. A person who registers more than one vehicle may have all of

such vehicles initially registered at the same time or at separate

times. Any person who obtains a vehicle may, upon registration,

have the registration period adjusted to allow future registration

of all such vehicles at the same period or at a different period.

C. On and after January 1, 2022, if a physically disabled

license plate is issued pursuant to paragraph 3 of subsection B of

Section 1135.1 of this title for a vehicle which is subject to the

requirements of Section 1132 of this title, the registration periods

for the vehicle may be combined into a single registration period.

Service Oklahoma shall determine, by rule, a method for adjusting

the twelve-month period.