California Code, Government Code - GOV § 16733

The rate of interest to be borne by the bonds need not be uniform for all bonds of the same issue, and shall be the rate or rates specified in the bid or proposal for negotiated sale accepted by the Treasurer, unless a variable interest rate is prescribed for the bonds in the resolution pursuant to subdivision (d) of Section 16731. The first interest payment date may be any date within one year after the date of the bonds.