Motion to certify / decertify class or modify certification order: serve and file moving papers

"Notice of a motion to certify or decertify a class or to amend or modify a certification order must be served on all parties to the action and filed at least 34 calendar days before the date set for hearing. Any opposition to the motion must be served and filed at least 20 calendar days before the noticed or continued hearing, unless the court for good cause orders otherwise. Any reply to the opposition must be served and filed at least 11 calendar days before the noticed or continued date of the hearing, unless the court for good cause orders otherwise. The provisions of Code of Civil Procedure section 1005 otherwise apply."

CCP 12: "The time in which any act provided by law is to be done is computed by excluding the first day, and including the last, unless the last day is a holiday, and then it is also excluded." CCP 12a(a): "If the last day for the performance of any act provided or required by law to be performed within a specified period of time is a holiday, then that period is hereby extended to and including the next day that is not a holiday. For purposes of this section, “holiday” means all day on Saturdays, all holidays specified in Section 135 and, to the extent provided in Section 12b, all days that by terms of Section 12b are required to be considered as holidays." CCP 12b: "If any city, county, state, or public office, other than a branch office, is closed for the whole of any day, insofar as the business of that office is concerned, that day shall be considered as a holiday for the purposes of computing time under Sections 12 and 12a." CCP 10: "Holidays within the meaning of this code are every Sunday and any other days that are specified or provided for as judicial holidays in Section 135."