Legal Deadline Tool

Deadline counting has more conventions than it has arithmetic. Whether the trigger day counts, whether days are calendar or business, whether a weekend result rolls, and which days a court is closed all change the answer, and they differ by jurisdiction and by rule.

This tool applies the convention you select rather than assuming one, and shows both the raw and the adjusted date so the effect of each choice is visible.

Result

Due date

2026-03-23

Days remaining

21

Day of the week: Monday
Before rolling: 2026-03-23
Rolled?: No
Calendar days from trigger: 21
Business days from trigger: 15
Status: Upcoming
Method applied: 21 calendar day(s) after the trigger date

This tool performs arithmetic on the values you enter. It does not provide legal advice and does not create an attorney-client relationship.

Counting rules differ by court and jurisdiction, including whether the trigger day counts, how weekends and holidays are treated, and how a deadline that lands on a closure day is rolled. Always verify against the governing rule and the court calendar.

Reminder schedule

Milestone	Date
Trigger date	2026-03-02
30 days before due	2026-02-21
14 days before due	2026-03-09
7 days before due	2026-03-16
1 day before due	2026-03-22
Due date	2026-03-23

How to use the legal deadline tool

Enter the trigger date and the number of days from the governing rule.
Choose calendar or business days, and the direction.
Choose whether the trigger day counts and whether the result rolls off weekends.
Add court closures, then verify the result against the rule.

What people use this for

Calculating a response deadline from a date of service.
Counting back from a hearing to a filing date.
Checking a date calculated under a different convention.
Producing a reminder schedule ahead of a deadline.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

Twenty-one calendar days after service

Twenty-one calendar days forward from 2 March 2026, trigger day excluded, rolling forward.

Due date: 2026-03-23
Days remaining: 21
Rolled?: No

Ten business days before a hearing

Ten business days backward from 20 April 2026.

Due date: 2026-04-06
Day of the week: Monday
Business days from trigger: 10

The convention is the whole problem

The arithmetic is trivial; the conventions are not. An inclusive count shifts everything by a day. Thirty business days and thirty calendar days differ by well over two weeks. A rolling rule changes the date again, and closure days differ by court.

Getting the arithmetic right under the wrong convention produces a confidently wrong date, which is worse than an obviously uncertain one.

Verification is not optional

This tool has no court calendar, does not know your jurisdiction, and cannot tell you which rule governs your filing or whether it counts in calendar or business days.

It counts days on the instructions you give it. Every result must be checked against the governing rule and the court’s published calendar before anything is relied on.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

Calendar counting adds or subtracts days directly; business counting skips weekends and listed closures.
Including the trigger day removes one day from the count. Rolling moves a weekend or closure result to the next available day.
No jurisdiction-specific rules or court calendars are applied.
The tool performs arithmetic or date counting on the values you enter. It does not interpret a rule, a statute or a contract.
Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This website provides general informational and productivity tools and does not provide legal advice or create an attorney-client relationship.

The date and deadline tools count days exactly as you instruct them. They do not interpret court rules, statutes of limitation, filing requirements or any other legal authority, and they do not know the rules of your jurisdiction.

Always verify any date, fee, or calculation against the governing rule, the court calendar and your own professional judgement. If you need legal advice, consult a lawyer licensed in your jurisdiction.

Frequently asked questions

Can I rely on this for a filing?

No. Verify every date against the governing rule and the court calendar. This performs arithmetic on your instructions.

Why are court holidays not built in?

Because they differ by court and by year. A built-in list would be wrong often enough to be dangerous.

Does the trigger day count?

It depends on the rule. Both conventions are common, which is why it is an option here.

Does this replace a docketing system?

No. Practice-wide deadline management needs rule-based calculation and independent verification.

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