California Code, Business and Professions Code - BPC § 2644

(a) Every license issued under this chapter shall expire at 12 a.m. on the last day of the birth month of the licensee during the second year of a two-year term, if not renewed.

(b) To renew an unexpired license, the licensee shall, on or before the date on which it would otherwise expire, apply for renewal on a form prescribed by the board, pay the prescribed renewal fee, and submit proof of the completion of continuing competency required by the board pursuant to Section 2649.  The licensee shall disclose on his or her license renewal application any misdemeanor or other criminal offense for which he or she has been found guilty or to which he or she has pleaded guilty or no contest.