16 GCA § 7135: License Plates: Renewal.

(a) Every license plate and special plate issued under this Title expires at midnight on the last day of the month in which the registration expires each year. Upon application to the Department of Revenue and Taxation and payment of the fee provided in this Title, the person to whom any such plate was issued may obtain a new plate or device indicating registration for the coming year.

(b) Every application for the renewal of a license may be made during the month the registration expires but shall be made by midnight of the last day of the month in which the registration expires.