Deadline errors rarely come from arithmetic. They come from a missed decision: counting from the wrong day, using the wrong holiday list, or adding service days in the wrong place. This guide walks through the decisions in the order a docketing clerk makes them, with the federal, California and Texas answers side by side.
1. Find the rule that sets the period
Start with the text that creates the deadline — a rule of procedure, a statute, a local rule or a court order — and read three things from it: the number, the unit, and the event it runs from. “Within 21 days after being served” (FRCP 12(a)) and “at least 16 court days before the hearing” (Cal. Code Civ. Proc. § 1005(b)) differ in all three.
Then find the computation rule that applies to it. Federal civil periods use FRCP 6(a); California uses Code of Civil Procedure §§ 12 to 12c; Texas uses Rule 4 of its Rules of Civil Procedure. A statute or order can override the general computation rule, and a specific statute can set its own count — always check the text that creates the deadline before the general rule.
2. Identify the trigger day — and leave it out
The trigger is the act or event the period runs from: service, entry of judgment, filing, a hearing. In federal, California and Texas courts the trigger day itself is not counted; day one is the next day. Two refinements:
- Service on a day the court is closed. California deems electronic service made on a Saturday, Sunday or court holiday to have been made on the next court day (Code Civ. Proc. § 1010.6(a)(4)). Texas deems fax service completed after 5:00 p.m. served the next day (Tex. R. Civ. P. 21a(b)).
- Florida starts later. For periods of seven days or more, Florida begins counting on the first day after the trigger that is not a weekend or legal holiday (Fla. R. Gen. Prac. & Jud. Admin. 2.514). Service on a Friday makes the following Monday day one.
3. Count in the right unit
Calendar days count every day. Court days — sometimes called business days — skip Saturdays, Sundays and the court’s holidays. Federal periods are always calendar days. California mixes the two, sometimes within a single deadline. Texas counts calendar days except that periods of five days or less skip weekends and legal holidays. The court days guide covers the differences in detail.
Periods in months and years raise their own questions — for example, what “one month after January 31” means, or how a February 29 anniversary is treated. Our statute of limitations calculator counts the months and years for the periods it covers; for any other period, check the governing statute.
4. Handle a last day on a weekend or holiday
If the last day of a period counted forward falls on a weekend or holiday, every system covered here extends it to the next court day. Periods counted backward from an event are different:
- Federal courts move a backward deadline to the next earlier day that is not a weekend or holiday (FRCP 6(a)(5)).
- California courts do not extend “not less than” notice periods to a later day (Steele v. Bartlett (1941) 18 Cal.2d 573); the conservative practice is to move to the preceding court day.
- New York goes the other way: General Construction Law § 25-a moves even a “before which” deadline forward to the next business day.
- Fri, Nov 27Last dayMoved earlier, never later
- Sat, Nov 28Day 10 lands on a weekendFRCP 6(a)(5)
- 10 daysCounted backEvery day counts
- Tue, Dec 8HearingNot counted
Hearing date: · 10 days
- Count 10 calendar days before (that day is not counted): .
- is not a court day (Saturday), so the deadline moves back to .
Deadline:
Which holidays count is a decision of its own. Federal courts use the federal list plus, for forward periods, the holidays of the state they sit in. California state courts use the judicial holidays of § 135, which differ from the state’s general holiday list. Texas uses its Government Code lists, where the effect of several state holidays is unsettled. See the 2027 court holidays.
Hearing date: · Personal delivery
- Count 81 calendar days before (that day is not counted): .
- is not a court day (Sunday), so the deadline moves back to , passing (Saturday), (New Year's Day).
Deadline:
5. Add time for the method of service — in the right place
Service by mail, and in some systems by fax or overnight delivery, extends the time to respond. The amount differs by court, but so does where the days go:
| Court | Days added | Where they go |
|---|---|---|
| Federal | 3 (mail, clerk, consented other means) | After the period would otherwise expire — compute and roll first, then add, then roll again (FRCP 6(d)) |
| California | 5, 10, 12 or 20 calendar days by mail; 2 court days by fax or overnight | Added to the period, then one roll at the end (§ 1013); counted backward from the base date for notice periods (§ 12c(b)) |
| Texas | 3 (mail only) | Added to the prescribed period (Rule 21a(c)) |
The federal ordering produces a later date than adding the days up front whenever the original last day falls on a weekend. The mail service guide compares these rules in full.
6. Know when the last day ends
A deadline is a moment, not just a date. In federal court, an electronic filing is timely until midnight in the court’s time zone (FRCP 6(a)(4)). Texas e-filings are timely until midnight too, except where a rule sets a time — a defendant’s original answer is due by 10:00 a.m. (Rule 99(b)). Florida’s statewide cutoff for electronic filing and service is 11:59:59 p.m. Eastern time since , even in Panhandle counties on Central time. Filing by paper usually ends when the clerk’s office closes.
A checklist before you calendar the date
- Did you read the rule that creates the deadline, not only the general computation rule?
- Is day one the day after the trigger — or the first business day after it?
- Did you count in the unit the rule uses?
- Did you check the right holiday list for this court and this direction?
- If service days apply, did you add them where the rule puts them?
- Is there a local rule, standing order or court order that changes the date?
- Is the deadline a time of day, and in which time zone?
The calculators on this site make each of these decisions explicitly and show them in the result, so you can check the reasoning rather than trust a bare date.
Questions about calculating a deadline
Do you count the day of service when calculating a deadline?
No. In federal, California, Texas, New York, Pennsylvania, Illinois, Florida and Georgia courts the day of the triggering event is excluded and day one is the next day. Florida goes further for periods of seven days or more: day one is the first day after the trigger that is not a weekend or legal holiday (Fed. R. Civ. P. 6(a)(1)(A); Fla. R. Gen. Prac. & Jud. Admin. 2.514(a)(1)).
What happens when a deadline falls on a weekend or holiday?
For a period counted forward, every system covered here extends it to the next day the court is open. For a period counted backward from a hearing, federal courts move the date earlier (Rule 6(a)(5)), New York moves it later under General Construction Law § 25-a, and California practice is to serve by the preceding court day.
Do weekends count when calculating court deadlines?
In most systems, yes: a period of a week or longer counts every calendar day, and only a last day on a weekend or holiday moves. Texas excludes weekends and holidays from periods of five days or less, and Florida and Georgia from periods of fewer than seven; federal courts have counted every day since (Tex. R. Civ. P. 4; Fla. R. Gen. Prac. & Jud. Admin. 2.514(a)(2); O.C.G.A. § 1-3-1(d)(3)).
How are the extra days for mail added to a deadline?
It depends on the court. Federal Rule 6(d) adds three days after the period would otherwise expire, so the period is computed and rolled off a weekend first; California § 1013 and Texas Rule 21a(c) add their days to the period itself, so the combined period is rolled once at the end. The same count can land on different dates under the two methods.
What time of day does a court deadline end?
Usually midnight in the court’s time zone for an electronic filing: Fed. R. Civ. P. 6(a)(4) says so expressly, and Texas e-filings are timely until midnight unless a rule sets a time. Florida’s cutoff is 11:59:59 p.m. Eastern time statewide, and some filings have their own hour, such as a Texas answer due by 10:00 a.m. on the deadline day (Tex. R. Civ. P. 99(b)).
Which rule governs when a statute and a procedural rule set different counts?
The text that creates the deadline controls over the general computation rule. A statute with its own method, such as Georgia’s dispossessory answer under O.C.G.A. § 44-7-51(b), is counted the way it says; the general rule fills in only what the specific text leaves open, and a court order or local rule can change the date for one case.