Holidays, Deadlines, and Delivery Under California Law

Don’t be too quick to pick a delivery date. California’s default rules on business days, holidays, and breach may not match your deal. Know the difference.

When Is “On Time” Actually Late? What California Law Says About Delivery Deadlines

Don’t be too quick to pick a date. Business owners often treat a delivery date as the easy part of a contract—the fill-in-the-blank they settle in thirty seconds so they can move on to the terms that seem to matter.

It rarely is the easy part.

Whether a delivery, a payment, or a project milestone is legally “on time” in California depends on terms most contracts never define: calendar day or business day, which holiday calendar applies, and what actually happens if the date is missed. Get the drafting wrong, and you have handed a dispute to whichever side benefits from the ambiguity.

The Default Rule Nobody Reads: Calendar Days vs. Business Days

If a contract just says “days” without defining the term, California’s default computation rules kick in, and those rules count calendar days, not business days.

California Code of Civil Procedure Section 12 excludes the first day of the period and includes the last, counting straight through weekends. Section 12a adds one narrow exception: if the final day of the period lands on a holiday, defined to include every Saturday plus the statutory holidays discussed below, the deadline pushes to the next day that is not a holiday.

Notice what that exception does not do.

It does not convert your fifteen-day delivery window into fifteen business days. It only rescues you if the last day happens to land on a Saturday or a holiday. A delivery date that falls on a Tuesday is a Tuesday, full stop, regardless of how many of the preceding days were weekends.

Practice Tip: If you actually mean business days, say “business days” and define what a business day excludes. If you mean calendar days, say so and skip the argument entirely. Silence defaults to calendar days with a narrow weekend and holiday carve-out, and that default rarely matches what either party pictured when they signed.

“Holiday” Is Not a Universal Word

Even contracts that define “business day” or say “or the next business day if the deadline falls on a holiday” often stop there, leaving “holiday” undefined.

That gap matters more in California than most business owners expect.

Government Code Section 6700 sets California’s statutory holiday list, and it is considerably broader than the federal holiday calendar. California recognizes as holidays: every Sunday, Lunar New Year, Diwali, Genocide Remembrance Day, Native American Day, and Farmworkers Day, along with a half day for Good Friday, none of which appear on the federal list.

A contract that says “federal holidays” is describing a different, shorter calendar than a contract that says “California holidays” or simply “holidays.”

For a business with vendors, customers, or lenders outside California, that mismatch is not academic. It can shift an actual delivery deadline by a day or more depending on which list the contract silently assumes.

Practice Tip: Define “holiday” by specific reference, either to the federal calendar, to Government Code Section 6700, or to an attached schedule. Do not leave the word to interpret itself.

California’s Default Delivery Standard—and Why You May Not Want It

When a contract sets no time for performance at all, Civil Code Section 1657 supplies the gap filler: a reasonable time is allowed, except that an act capable of being done instantly, such as payment of an ascertained sum, must be performed immediately.

“Reasonable time” sounds flexible. In practice, it is a standard, not a rule—and standards get litigated.

What is reasonable for delivering custom equipment is not reasonable for delivering a stock component, and neither side wants to find out where the line falls in front of a judge.

For contracts involving the sale of goods, California’s Commercial Code adds a second layer that surprises a lot of business owners: the perfect tender rule.

Commercial Code Section 2601 gives a buyer the right to reject goods, or a tender of delivery, that fail to conform to the contract “in any respect,” which on its face includes lateness.

That default is harsher than most sellers assume, though it is tempered by Commercial Code Section 2508, which gives a seller a limited right to cure a nonconforming or late delivery, particularly where the seller had reasonable grounds to believe the tender would be acceptable.

Practice Tip: Do not rely on “reasonable time” or the statutory default for anything that actually matters to your deal. Define the delivery window, and define what happens if it is missed, expressly.

Late Delivery: A Curable Default or a Material Breach?

This is the question clients actually ask, and the honest answer is that it depends on what the contract says and how far off the delivery actually was.

California courts start by asking whether the parties made time “of the essence.” Under the longstanding rule from Bisno v. Sax (1959), a time-is-of-the-essence clause is enforceable, but only when it is stated expressly and unequivocally.

Absent that clause, courts are reluctant to treat a missed date as an automatic default entitling the other side to walk away, especially where performance was substantially, if not perfectly, complete.

California’s substantial performance doctrine, reflected in CACI No. 312, generally protects a party who has performed the essential purpose of the contract from having their entire performance treated as worthless over a minor or technical shortfall, though the other side can still recover actual damages caused by the delay.

Civil Code Section 3275 reinforces the same instinct from the equity side. A party who technically defaults, including by missing a deadline, can seek relief from a forfeiture or forfeiture-like consequence by making the other side whole, unless the failure was grossly negligent, willful, or fraudulent.

In plain terms, California law generally favors compensating for a delay over nuking the whole deal, unless the parties expressly agreed otherwise or the lateness goes to the heart of what was bargained for.

So the honest framework lawyers and courts actually apply looks like this:

Is time expressly of the essence in this contract?
Is the delay minor and curable, or does it defeat the purpose of the deal?
Did the breaching party act in good faith or willfully blow through the date?

The answer can change the available remedy from “you owe me damages for the delay” to “I get to terminate and walk away.” Those are very different conversations to have with a counterparty.

Practice Tip: If a missed date should let the other side terminate the deal, say so expressly and make time of the essence in writing. If a missed date should just trigger damages, liquidated damages, or a cure period, say that instead. Do not leave the consequence to a judge’s read of the equities.

The Same Analysis Applies Well Beyond Delivery

Everything above is usually discussed in the context of delivering goods or making a payment, but the same drafting problem—and the same body of law—shows up anywhere a contract sets a date:

The commencement date for a construction project
The substantial completion date
A punch-list deadline
A financing contingency deadline in a real estate purchase agreement
A closing date in an M&A transaction

Construction contracts are a particularly good illustration because the stakes on both sides are large and timing disputes are common.

A two-day delay in reaching the substantial completion date on a commercial build is rarely treated by a California court as an automatic default entitling the owner to terminate the contractor, absent an express time-is-of-the-essence provision, for the same reasons discussed above.

That is precisely why well-drafted construction contracts use liquidated damages clauses to price a late completion in dollars per day rather than leaving the consequence to an all-or-nothing breach analysis.

The liquidated damages clause does the work that an undefined “reasonable time” standard cannot: it tells both sides, in advance, exactly what a missed date costs.

Practice Tip: Whatever the transaction—delivery of goods, payment, construction milestones, or closing conditions—the fix is identical:

Define the trigger date.
Define what counts as a day.
Define what counts as a holiday.
State explicitly whether time is of the essence.
State what remedy follows if the date is missed.

Key Takeaways

California’s default rule counts calendar days, not business days, unless your contract says otherwise. The holiday exception only rescues a deadline that lands on the last day.
California’s statutory holiday list under Government Code Section 6700 is broader than the federal holiday list, so “federal holidays” and “holidays” are not interchangeable terms in a California contract.
Absent an express time-is-of-the-essence clause, California courts generally treat a missed date as grounds for damages, not automatic termination, particularly where performance was substantially complete.
Civil Code Section 3275 and California’s substantial performance doctrine both favor compensating for a delay over forfeiting the whole deal, unless the breach was willful or the parties agreed otherwise in writing.
The same drafting fix—define the date, define the day, define the holiday, and define the consequence—applies equally to delivery of goods, payment terms, and construction or closing milestones.

FAQ

Does California law assume business days or calendar days when a contract just says “days”?

Calendar days. Code of Civil Procedure Sections 12 and 12a count every day, including weekends, and only extend a deadline that falls on a Saturday or statutory holiday to the next non-holiday day.

What counts as a legal holiday in California for contract deadlines?

Government Code Section 6700 defines California’s statutory holidays, and the list is broader than the federal holiday calendar, including holidays like Lunar New Year and Genocide Remembrance Day that are not federally recognized.

Is a late delivery automatically a breach of contract in California?

Not automatically. Whether a late delivery is a breach, and what remedy follows, depends on whether the contract makes time of the essence expressly, how significant the delay was, and whether performance was otherwise substantially complete.

Can a party cure a missed deadline under California law?

Often, yes. Civil Code Section 3275 allows relief from a forfeiture-type consequence upon making the other party whole, absent gross negligence, willfulness, or fraud, and Commercial Code Section 2508 gives sellers of goods a limited right to cure a nonconforming or late tender.

Should construction contracts include a time-is-of-the-essence clause?

If missing a completion date should allow termination, yes, and it must be stated expressly. Many construction contracts instead use liquidated damages clauses to price a delay in dollars per day rather than risking an all-or-nothing breach fight.

Sources Consulted

Cal. Code Civ. Proc. Section 12
Cal. Code Civ. Proc. Section 12a
Cal. Gov. Code Section 6700
Cal. Civ. Code Section 1657
Cal. Civ. Code Section 3275
Cal. Com. Code Sections 2601–2616
CACI No. 312, Substantial Performance (Judicial Council of California Civil Jury Instructions)
Bisno v. Sax (1959) 175 Cal.App.2d 714