Pick a deadline and enter the trigger date. The result applies Cal. Code Civ. Proc. 12, 12a, 12b, 10, 17(b)(4), applied to probate proceedings by Prob. Code 1000; Cal. Rules of Court, rule 1.10 (counting, weekends and court holidays), service-method extensions where the law allows them, and the rule for that deadline, with each step and citation shown. Scope: Sonoma County local rules are included below (marked with the court name), layered on these base rules. California superior court probate proceedings: decedents' estates, trusts, guardianships, and conservatorships under the Probate Code; Code of Civil Procedure rules of practice as applied by Prob. Code 1000; Cal. Rules of Court Title 7 (rules 7.51, 7.801, 7.802 checked) and rule 8.104 for appeals. Statewide only; local probate rules not included.. Rules current as of 2026-10-23.
Sonoma County local rules independently reviewed (effective 2026-07-01)
Deadline
Thursday, October 22, 2026
Trigger (Hearing date): Friday, November 6, 2026.
Count back 15 calendar days: Thursday, October 22, 2026.
Rules applied
Cal. Prob. Code 1220(a)(1)
(a) If notice of hearing is required to be given as provided in this section:(1) At least 15 days before the time set for the hearing, the petitioner or the person filing the report, account, or other paper shall cause notice of the time and place of the hearing to be delivered pursuant to Section 1215 to the persons required to be given notice.
Official sourceCal. Code Civ. Proc. 12, 12a, 12b, 10, 17(b)(4), applied to probate proceedings by Prob. Code 1000; 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." CCP 17(b)(4): "“Month” means a calendar month, unless otherwise expressed." Prob. Code 1000(a): "Except to the extent that this code provides applicable rules, the rules of practice applicable to civil actions, including discovery proceedings and proceedings under Title 3a (commencing with Section 391) of Part 2 of the Code of Civil Procedure, apply to, and constitute the rules of practice in, proceedings under this code."
Last day to mail/deliver notice. Prob. Code 1215(a)(4): the period of notice is not extended for mail; 1215(c)(2) same for electronic delivery. Default recipients: personal representative and persons who requested special notice (1220(a)(2)); specific statutes add others (e.g., 11000 for accounts, 12201 for status reports, 9103(e) late-claim petitions, 8906(c) appraisal objections). CRC 7.51: mailed notice must go individually and directly to each person; notice to a represented person goes per Prob. Code 1214. Court may dispense with notice for good cause (1220(c)). Posting (Prob. Code 1230, 15 days before hearing) is a clerk duty where required.
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.
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CMC tentative rulings posted 3 court days before the CMC calendar; party wishing to be heard must advise the judicial assistant no later than 24 hours before the conference and notify all parties. Sonoma Super. Ct. Local Rule 4.2(B)
Civil law and motion tentative rulings issued by 2:00 p.m. the court day before the hearing; available online 2:00 to 4:00 p.m. Sonoma Super. Ct. Local Rule 5.5(A)
Stipulated continuances or drops of law and motion matters must be filed by 4:00 p.m. at least 3 court days before the hearing, with same-day courtesy copy to the department; only one stipulated continuance. Sonoma Super. Ct. Local Rule 5.3
Post-trial documents: courtesy copies to the trial department's drop box the same day they are filed. Sonoma Super. Ct. Local Rule 4.18
Trials are called on the Friday specified in the Notice of Trial; in-person attendance required unless excused. Sonoma Super. Ct. Local Rule 4.10(B)
Small claims: exhibits are destroyed 60 calendar days after final determination unless the litigant requested return and supplied a stamped envelope; no post-trial exhibits accepted unless requested by the court. Sonoma Super. Ct. Local Rule 2.1(E)
Civil case management plans: unlawful detainer and injunctive proceedings placed in a six-month disposition plan; judicial review, enforcement and miscellaneous petitions in a nine-month plan; UM/UIM designated cases exempt for 180 days with CMC on the first CMC calendar after 180 days. Sonoma Super. Ct. Local Rule 4.1(C)-(D)
Criminal: Master Calendar since June 1, 2026 (arraignments 1:30 p.m.); Clear Warrant (Return on Warrant) calendar at 8:30 a.m. requires check-in at the Criminal Clerk's Office before 8:30 a.m. the same day (court notice, May 28, 2026, not a local rule). Sonoma Superior Court notice 'Master Calendar to Launch June 1, 2026'
Criminal: applications for temporary release of jail inmates must show notice to the District Attorney and Sheriff at least 48 hours before presentation. Sonoma Super. Ct. Local Rule 8.9(B)(1)
Family ex parte/emergency orders: notice by 10:00 a.m. one court day before review; application delivered to opposing party by 11:00 a.m. one court day before review (in force in the July 2026 rules). Sonoma Super. Ct. Local Rule 9.12
Family: drop a hearing from Domestic or Child Support Calendar by noon one court day before; courtesy call to judicial assistant by 3:00 p.m. one court day before when continuing. Sonoma Super. Ct. Local Rule 9.13
Juvenile: stipulated continuance requests presented by noon at least one court day before the hearing. Sonoma Super. Ct. Local Rule 10.11
Juvenile: for parents in Sonoma County Jail, confirm with the juvenile clerk five days before the hearing that the Sheriff has been notified of transport. Sonoma Super. Ct. Local Rule 10.30(A)
Juvenile dependency telephone appearance: request 5 court days before, opposition 3 court days before, court rules 2 court days before. Not modeled as deadlines because statewide remote-appearance law (CCP 367.76; W&I 679.5; CRC 5.531) may control; lawyer should confirm which governs. Sonoma Super. Ct. Local Rule 10.37
Under Cal. Rules of Court, rule 3.20, county rules cannot change statewide deadlines for pleadings, motions, discovery or ex parte applications; local rules that tried to were excluded from the calculator.