California CodesCode of Civil Procedure - CCPPreliminary ProvisionsSection 12c
(a) Where any law requires an act to be performed no later than a specified number of days before a hearing date, the last day to perform that act shall be determined by counting backward from the hearing date, excluding the day of the hearing as provided by Section 12.
(b) Any additional days added to the specified number of days because of a particular method of service shall be computed by counting backward from the day determined in accordance with subdivision (a).
Notes
Requires backward counting when an act must be performed a specified number of days before a hearing, excluding the hearing day in determining the last day for performance. Any additional days attributable to the method of service must then also be counted backward from the date determined under that rule.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 12c | https://laws.lexinter.net/codes/california/code-of-civil-procedure/preliminary-provisions/section-12c