Class certification motion: reply

11 days before noticed or continued hearing date on the class certification motion, under Cal. Rules of Court, rule 3.764(c)(1) (amended eff. Jan. 1, 2026).

Rule text

"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."

Cal. Rules of Court, rule 3.764(c)(1) (amended eff. Jan. 1, 2026), official source

Calculate this deadline

Deadline
Monday, October 26, 2026
  1. Trigger (Noticed or continued hearing date on the class certification motion): Friday, November 6, 2026.
  2. Count back 11 calendar days: Monday, October 26, 2026.
Rules applied
Cal. Rules of Court, rule 3.764(c)(1) (amended eff. Jan. 1, 2026)
"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."
Official source
Cal. Code Civ. Proc. 12, 12a, 12b, 10; Cal. Rules of Court, rule 1.10
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."
Official source
  • Calendar days, from noticed or continued hearing. Same CCP 1005(c) next-business-day delivery requirement as the opposition. Reply memorandum limited to 15 pages (3.764(c)(2)).
  • If the clerk's office is closed or inaccessible on the last day (weather, emergency or local closure orders), the deadline may be extended. Check local orders.

This calculator applies the cited rules to the dates you enter. It is not legal advice. Court orders, local rules, and case-specific facts can change a deadline; verify before relying on it. Rule set pending attorney review.

Worked example

Noticed or continued hearing date on the class certification motion on Monday, March 15, 2027, personal service: due Thursday, March 4, 2027.

  1. Trigger (Noticed or continued hearing date on the class certification motion): Monday, March 15, 2027.
  2. Count back 11 calendar days: Thursday, March 4, 2027.

Notes

Calendar days, from noticed or continued hearing. Same CCP 1005(c) next-business-day delivery requirement as the opposition. Reply memorandum limited to 15 pages (3.764(c)(2)).

Related deadlines

All California civil deadlines

Local rules by county

County local rules and courtroom procedures can add to or change this deadline. Pick a county to calculate with them applied.

Rules current as of 2026-10-25. Confirm against the official source and any local rule or court order before relying on a date. Rules changelog.