California Code, Elections Code - ELEC § 10263

(a) Except as provided in subdivision (b), the governing body shall meet at its usual place of meeting no later than the fourth Friday after the election to declare the results and to install the newly elected officers.

(b) For a consolidated election, the governing body shall meet at its usual place of meeting no later than the next regularly scheduled city council meeting following presentation of the 28-day canvass of the returns, or at a special meeting called for this purpose, to declare the results and to install the newly elected officers.