Computing a court deadline: the day you start counting, weekends, holidays, and what mail adds

Applies across jurisdictions · Last verified August 17, 2026

Almost every American court system computes time the same way, using a formula that hasn't changed much in a century. The shape is simple. The exceptions are where the trouble is.

The three steps

1. Exclude the day the clock starts. The triggering day doesn't count. Served on a Tuesday, day one is Wednesday.

2. Count every day after that — including Saturdays, Sundays and holidays.

3. Include the last day, unless it falls on a weekend or holiday, in which case the period runs to the next day that isn't one.

The same three steps, in nearly the same words, across jurisdictions:

Federal — Rule 6(a)(1). For a period stated in days: "exclude the day of the event that triggers the period; count every day, including intermediate Saturdays, Sundays, and legal holidays; and include the last day of the period, but if the last day is a Saturday, Sunday, or legal holiday, the period continues to run until the end of the next day that is not a Saturday, Sunday, or legal holiday."

California — 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."

Texas — Rule 4. "[T]he day of the act, event, or default after which the designated period of time begins to run is not to be included. The last day of the period so computed is to be included, unless it is a Saturday, Sunday, or legal holiday."

Georgia — § 9-11-6(a) adopts the computation rules in O.C.G.A. § 1-3-1(d)(3).

Exception one: short periods, where weekends stop counting

This is the most common trap, and jurisdictions draw the line in different places.

Texas — Rule 4: "Saturdays, Sundays, and legal holidays shall not be counted for any purpose in any time period of five days or less."

Federal: no equivalent. Rule 6(a)(1)(B) counts every day regardless of the length of the period. The federal rules removed the old short-period carve-out when they moved to a "count every day" system, and the periods were re-set in multiples of 7 to compensate.

California: CCP 12a extends only the last day, but a great many California periods are stated in court days rather than calendar days — which achieves the same thing by a different route. When a California statute says "court days," weekends and holidays are simply not counted at all.

So a five-day period means three different things depending on where you are, and in California it depends on whether the statute says "days" or "court days." That phrase is worth checking every time.

Exception two: holidays are defined locally

Federal — Rule 6(a)(6) defines "legal holiday" as the federal holidays it lists by name, any day declared a holiday by the President or Congress, and — for periods measured after an event — any other day declared a holiday by the state where the district court sits. A state holiday extends a federal deadline counted forward, but not one counted backward.

California — CCP 12a(a) defines "holiday" to include all day on Saturdays, everything in Section 135, and the days Section 12b treats as holidays. And 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."

That last provision means a court closure can extend a California deadline even on a day that is otherwise an ordinary Tuesday.

Federal — Rule 6(a)(3) handles the same problem differently: if the clerk's office is inaccessible on the last day for filing, the time extends to the first accessible day that isn't a Saturday, Sunday or legal holiday.

Exception three: counting backward

Some deadlines run backward from an event — a hearing, a trial date. Federal Rule 6(a)(5) defines "next day" by direction: "continuing to count forward when the period is measured after an event and backward when measured before an event."

Counting backward, the weekend rule pushes the deadline earlier, not later. A paper due "at least 20 days before the hearing" that lands on a Sunday is due Friday. Getting the direction wrong makes you two days late on a deadline you thought you had met.

California's summary-judgment schedule is the clearest working example — 81 days' notice, opposition 20 days before the hearing, reply 11 days before, all counted backward from the hearing date.

Exception four: when the last day ends

Federal — Rule 6(a)(4): unless a statute, local rule or court order sets a different time, the last day ends "for electronic filing, at midnight in the court's time zone; and for filing by other means, when the clerk's office is scheduled to close."

Two different endings on the same day, depending on how you file.

New York — CPLR 2103 and Texas — Rule 21(f)(5) likewise treat an electronically filed document as timely if filed before midnight on the deadline.

And then there is Texas Rule 99, which requires the citation to direct an answer by 10:00 a.m. on the Monday next after twenty days. A handful of deadlines end before the day does. They are rare enough that people assume midnight and are occasionally wrong.

What service by mail adds

Every system adds time when the paper that started the clock arrived by mail. The amounts differ, and so does what they attach to.

Jurisdiction	Mail adds	Notes
Federal — Rule 6(d)	3 days	for service under Rule 5(b)(2)(C), (D) or (F); does not apply to service of the summons under Rule 4
Texas — Rule 21a(c)	3 days	Rule 4 counts those three days including weekends and holidays; does not apply to the citation
California — CCP 1013	5 calendar days in-state; 10 out-of-state within the US; 20 outside the US; 2 court days for overnight or fax	expressly does not extend the time for a notice of appeal, or motions for new trial or to vacate under 663a
New York — CPLR 2103(b)(2)	5 days mailed within the state; 6 days mailed from outside the state but within the US	service by mail is complete upon mailing

Two patterns worth carrying away.

The add-on usually doesn't apply to the summons. Federal Rule 6(d) is tied to Rule 5 service, not Rule 4. Texas Rule 21a expressly excludes "the citation to be served upon the filing of a cause of action." The initial response deadline is generally set by the service rules themselves — and those often build in their own delay, like California's substituted service being complete on the 10th day after mailing.

Some deadlines are immune. CCP 1013 names three. Appeal deadlines in particular tend to be carved out of extension provisions everywhere, because they are jurisdictional.

When service is "complete" is not when it arrived

Several systems separate delivery from completion, and the deadline runs from completion.

California, substituted service — CCP 415.20: complete on the 10th day after the mailing.
California, out-of-state mail — CCP 415.40: complete on the 10th day after mailing.
New York, deliver-and-mail — CPLR 308(2): proof of service is filed, and service is complete ten days after that filing.
New York, service by mail on an attorney — CPLR 2103(b)(2): complete upon mailing.

The docket, not the doormat, is often what starts the count.

Extending a period

Covered separately in the guide on getting more time, but the shape matters here: most systems distinguish a request made before the period expires from one made after.

Federal Rule 6(b)(1) is the model — good cause before expiry, excusable neglect after. Georgia § 9-11-6(b) uses the same two-track structure, with the same excusable-neglect standard for late requests, and adds that no extension may be granted for motions for new trial or for judgment notwithstanding the verdict.

A worked example, three ways

A defendant is served in hand on Friday, 3 April, in a jurisdiction with a 20-day response period, where Monday 13 April is a court holiday.

Step 1: exclude 3 April. Day one is Saturday 4 April.
Step 2: count 20 days, including weekends. Day 20 is Thursday 23 April.
Step 3: 23 April is a Thursday, not a weekend or holiday, so it stands. The holiday on 13 April falls in the middle of the period and doesn't matter, because the period is longer than any short-period carve-out.

Change one fact and the answer moves. If the period were five days, Texas would exclude the intervening weekend and the holiday entirely, while the federal rules would count them. If service had been by mail, add three days federally or five in California — and check whether the add-on applies to that deadline at all. If this were Texas and the deadline were the answer date, none of the arithmetic above applies, because Rule 99 sets a Monday.

Where these rules live

We also publish deadline calculators for several jurisdictions. This page explains what the rules say. It isn't legal advice, and a court's own order always controls over these defaults.

How this guide is sourced. Every procedural statement here is drawn from the text of the rules named above, each of which is reproduced verbatim on its own page on this site. Quoted rule language appears in quotation marks or block quotes; everything else is original writing. Last verified August 17, 2026.

This page explains what the rules say. It is legal information, not legal advice, and it cannot tell you how a rule applies to your situation. Deadlines are often short and some are not extendable — if the outcome matters, talk to a lawyer or your court’s self-help center.