Local agency administrative fine or penalty: de novo appeal to superior court within 20 days after service of the final administrative order

Gov. Code 53069.4(b)(1): "Notwithstanding Section 1094.5 or 1094.6 of the Code of Civil Procedure, within 20 days after service of the final administrative order or decision of the local agency is made pursuant to an ordinance enacted in accordance with this section regarding the imposition, enforcement, or collection of the administrative fines or penalties, a person contesting that final administrative order or decision may seek review by filing an appeal to be heard by the superior court, where the same shall be heard de novo ... A proceeding under this subdivision is a limited civil case. ... A copy of the notice of appeal shall be served in person or by first-class mail upon the local agency by the contestant."

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."