Written opposition to UD demurrer or motion to strike (if submitted in advance)
1 court day before hearing date, under Cal. Code Civ. Proc. 1170(c) (eff. Jan. 1, 2026).
Rule text
An opposition and reply to an opposition may be made orally at the time of the hearing. If a party seeks to have a written opposition considered in advance of the hearing, the written opposition shall be filed and served on or before the court day before the hearing. Service shall be by personal delivery, electronic service, fax transmission, express mail, or other means consistent with Sections 1010, 1010.6, 1011, 1012, and 1013, and reasonably calculated to ensure delivery to the other party or parties no later than the close of business on the court day before the hearing. The court, in its discretion, may consider written opposition filed later.
Cal. Code Civ. Proc. 1170(c) (eff. Jan. 1, 2026), official source
Calculate this deadline
- Trigger (Hearing date): Friday, November 6, 2026.
- Count back 1 court days (Saturdays, Sundays, and court holidays are not counted): Thursday, November 5, 2026.
Cal. Code Civ. Proc. 1170(c) (eff. Jan. 1, 2026)
An opposition and reply to an opposition may be made orally at the time of the hearing. If a party seeks to have a written opposition considered in advance of the hearing, the written opposition shall be filed and served on or before the court day before the hearing. Service shall be by personal delivery, electronic service, fax transmission, express mail, or other means consistent with Sections 1010, 1010.6, 1011, 1012, and 1013, and reasonably calculated to ensure delivery to the other party or parties no later than the close of business on the court day before the hearing. The court, in its discretion, may consider written opposition filed later.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
- Opposition is optional in writing; may be oral at the hearing. No service-method extension: the method must be reasonably calculated to deliver by close of business on the court day before the hearing, so mail service generally must be made earlier.
- 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
Hearing date on Monday, March 15, 2027, personal service: due Friday, March 12, 2027.
- Trigger (Hearing date): Monday, March 15, 2027.
- Count back 1 court days (Saturdays, Sundays, and court holidays are not counted): Friday, March 12, 2027.
Notes
Opposition is optional in writing; may be oral at the hearing. No service-method extension: the method must be reasonably calculated to deliver by close of business on the court day before the hearing, so mail service generally must be made earlier.
Related deadlines
- Demurrer or motion to strike in UD: earliest hearing date (5 court days after)
- Demurrer or motion to strike in UD: latest hearing date (7 court days after)
- UD summary judgment: notice of motion (5 days before)
- UD summary judgment: written opposition (if submitted in advance) (1 court day before)
- UD motion to quash service (CCP 418.10): earliest hearing date, not less than 3 days after notice filed (3 days after)
- UD motion to quash service (CCP 418.10): latest hearing date, not more than 7 days after notice filed (7 days after)
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.
- Alameda
- Alpine
- Amador
- Butte
- Calaveras
- Colusa
- Contra Costa
- Del Norte
- El Dorado
- Fresno
- Glenn
- Humboldt
- Imperial
- Inyo
- Kern
- Kings
- Lake
- Lassen
- Los Angeles
- Madera
- Marin
- Mariposa
- Mendocino
- Merced
- Modoc
- Mono
- Monterey
- Napa
- Nevada
- Orange
- Placer
- Plumas
- Riverside
- Sacramento
- San Benito
- San Bernardino
- San Diego
- San Francisco
- San Joaquin
- San Luis Obispo
- San Mateo
- Santa Barbara
- Santa Clara
- Santa Cruz
- Shasta
- Sierra
- Siskiyou
- Solano
- Sonoma
- Stanislaus
- Sutter
- Tehama
- Trinity
- Tulare
- Tuolumne
- Ventura
- Yolo
- Yuba
Rules current as of 2026-10-23. Confirm against the official source and any local rule or court order before relying on a date. Rules changelog.