Cal. Civ. Proc. Code § 659a

Within 10 days of filing the notice, the moving party shall serve upon all other parties and file any affidavits intended to be used upon such motion. Such other parties shall have ten days after such service within which to serve upon the moving party and file counter-affidavits. The time herein specified may, for good cause shown by affidavit or by written stipulation of the parties, be extended by any judge for an additional period of not exceeding 20 days.