California Code, Penal Code - PEN § 2930

(a) The Department of Corrections shall inform every prisoner sentenced under Section 1170, for a crime committed prior to January 1, 1983, not later than 14 days after reception in prison, of all applicable prison rules and regulations including the possibility of receiving a one-third reduction of the sentence for good behavior and participation.  Within 14 days of the prisoner's arrival at the institution to which the prisoner is ultimately assigned by the Department of Corrections, the prisoner shall be informed of the range of programs offered by that institution and their availability at that institution.  The prisoner's central file shall reflect compliance with the provisions of this section not later than 90 days after reception in prison.

(b) The department shall, within 90 days after July 1, 1977, inform every prisoner who committed a felony before July 1, 1977, and who would have been sentenced under Section 1170 if the felony had been committed after July 1, 1977, of all applicable prison rules and regulations, which have not previously been provided, of the range of programs offered and their availability, and the possibility of receiving a reduction for good behavior and participation of one-third of the prisoner's remaining sentence after July 1, 1977.  The prisoner's central file shall reflect compliance with the provisions of this section.