Court Deadline Calculator for Business Days, Court Days, and Holidays
A deadline calculator is only useful if it knows when the court is closed. Court Rules now handles federal and selected state court holiday calendars in the same workflow

Counting days is the easy part. The hard part is knowing what the rule means by days, which court calendar applies, and whether a holiday moves the answer. That is where most deadline mistakes start
The Court Rules Deadline Calculator is built for that exact problem. Pick a court, choose a start date, choose a counting method, and get a date that uses that court's holiday schedule
Pick the counting method before you count
A rule that says 10 business days does not mean the same thing as 10 calendar days. Before you count anything, decide which of these modes the rule is using
- Business days: skip weekends and court holidays
- Calendar days: count every day, then check whether the final day needs to move under the governing rule
- Court days: use only when the rule or local practice says court days
Federal Rule of Civil Procedure 6 is the starting point for federal civil cases. State courts can use different terminology, different holidays, and different local tools. The calculator keeps those calendars tied to the court you select
Why the court matters
Court holidays are not just federal holidays. California courts, for example, publish statewide judicial holidays that include dates like Lincoln Day, Farmworkers Day, Native American Day, Thanksgiving, and the day after Thanksgiving. The California Judicial Branch publishes those dates on its court holidays page
Los Angeles Superior Court also maintains its own judicial holiday schedule and an official court date calculator. For critical filings, use the official court source as the final check
Example: Los Angeles Superior Court
Start with Friday, November 20, 2026. Add 10 business days in Los Angeles Superior Court. A weekend-only calculator lands on Friday, December 4. A court-aware calculator lands on Tuesday, December 8, because Thanksgiving Day and the day after Thanksgiving are court holidays
That is the difference between adding weekdays and calculating a court deadline. The calculator shows the skipped holidays, then gives you a calendar export so the result can go straight into Outlook, Apple Calendar, or Google Calendar
Use the holiday pages with the calculator
The calculator is the fastest path when you already know the date and the rule. The court holiday index is better when you need to inspect a court's full schedule first
For state courts, start with high-volume calendars like Los Angeles Superior Court holidays, New York Court of Appeals holidays, and Delaware Court of Chancery holidays
Calculate the date, then verify the court
Use the calculator for a fast answer, then open the court holiday page to inspect the source calendar behind it