DIES - The Law Mind Legal Dictionary

DIESAuthored

The Law Mind • 1427 words

Definition

Latin. A day; the day. In legal contexts, *dies* functions as both a standalone term and as the root of numerous compound Latin phrases governing how courts and parties measure, count, and assign legal significance to time.

1. A court day or day of appearance. In early common law practice, *dies* referred to an appointed day on which a party was required to appear before a court or answer a pleading. To have a *dies* was to have a scheduled day in court — a concept foundational to the entire structure of medieval English procedure.

2. A day's provision or maintenance. In older feudal usage, royal rents and obligations were sometimes measured not in money but in days' worth of provisions — food, lodging, and support for the king's household. *Dies* in this sense meant a day's worth of such maintenance.

3. The civil law day. Under Roman law (adopted into canon and civil law traditions), a *dies* ran from midnight to midnight — a span of twenty-four hours. This is the foundation of the modern legal day. Burrill records the Digest formulation: *dies à media nocte incipit, et sequentis noctis media parte finitur* — the day begins at midnight and ends at the middle of the following night.

4. Root of compound legal terms. *Dies* is most commonly encountered in compound Latin phrases: *dies a quo* (the day from which a period runs), *dies ad quem* (the day to which it runs), *dies certus* (a certain day), *dies incertus* (an uncertain day), *dies juridicus* (a court day on which judicial acts may be performed), *dies non juridicus* or *dies non* (a day on which courts do not sit), *dies utiles* (useful or available days), and *comperuit ad diem* (he appeared at the day).

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Common Language

Modern common usage (Wiktionary): Third-person singular present of "to die" — as in "he dies."

Historical common usage (Webster's 1913): Same — the verb form of dying; to cease to live.

The homographic collision here is complete and unavoidable. In legal Latin, *dies* is a noun meaning "day." In modern English, *dies* is a verb meaning the cessation of life. Researchers encountering the word in a Latin legal phrase must not read it as the English verb. The confusion is especially acute when reading mortality-related legal instruments — wills, life insurance cases, survivorship clauses — where both senses can appear on the same page.

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Common Confusion

*Dies* is frequently confused with *dies non* when researchers encounter the term in procedural contexts. *Dies* (the day, any day) is the parent term; *dies non* (dies non juridicus) is the specific subcategory referring to a day excluded from legal computation — Sundays, holidays, court recesses. The two terms operate in opposite directions: *dies* is a day that counts; *dies non* is a day that does not. See DIES NON.

A secondary confusion arises between *dies certus* and *dies incertus* in the law of conditions and future interests. Whether a day is certain or uncertain determines whether a bequest is a term or a conditional gift — a distinction with significant consequences in will construction.

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Recognized Forms

/SUBTYPES

Dies a quo — the starting day of a limitations period or term; the day from which time runs. The day itself is typically excluded from the count.

Dies ad quem — the terminal day of a period; the day to which time runs. Usually included in the count.

Dies certus — a certain day; one that will definitely arrive (e.g., a fixed calendar date). In the civil law of legacies, a gift payable on a *dies certus* vests immediately even if enjoyment is postponed.

Dies incertus — an uncertain day; one that may or may not arrive (e.g., the day a named person dies). Treated differently from *dies certus* in legacy and condition analysis.

Dies juridicus — a juridical day; a day on which courts are open and judicial acts may validly be performed.

Dies non (dies non juridicus) — a non-juridical day; a day excluded from procedural time calculations. See DIES NON.

Dies utiles — useful days; days actually available for a legal act, as opposed to continuous calendar days. Relevant in Roman law and its civil law descendants when calculating prescription periods.

Comperuit ad diem — "he appeared at the day"; a plea in common law practice asserting that a defendant on a bail bond appeared as required on the designated day.

Ad diem — at the day; on the very day appointed.

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Why It Matters in Research

*Dies* rarely appears alone in primary sources. Its research value lies almost entirely in the compound phrases it anchors. When a researcher encounters an unfamiliar Latin phrase beginning with or containing *dies*, the first task is to identify which subtype is at work — because the legal consequences vary substantially.

Time computation traps are the primary hazard. Historical sources differ on whether the *dies a quo* is included in or excluded from a limitations period, and different jurisdictions resolved this differently. Researchers working with older English chancery materials, Roman-derived civil law jurisdictions (Louisiana, Quebec, Scotland, South Africa), or ecclesiastical court records will encounter *dies utiles* calculations that do not map cleanly onto common law day-counting rules.

The Anderson's entry illustrates the practical procedural importance: *comperuit ad diem* was a live plea in nineteenth-century New York and Massachusetts insurance and bail bond litigation. If a researcher is working through appellate records from that era and finds a *comperuit ad diem* plea, it is a procedural defense, not a substantive insurance law argument.

The Burrill formulation — midnight to midnight — is important in any research touching on the exact moment a legal act occurred, whether a deed was delivered, a will was signed, or a statute of limitations expired at the end of a day. Courts and treatise writers were not always consistent about whether "end of the day" meant midnight or the close of business.

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Historical Dictionary Support

The historical sources agree on the Latin core: *dies* means day. Black's (1st ed.) adds the feudal maintenance meaning, which the other dictionaries do not emphasize — useful for researchers in medieval land law or fiscal history but not relevant to most modern research questions.

Burrill is the most useful of the historical sources here. The quoted Roman law passage establishes the civil law definition of a day as running midnight to midnight, and Burrill's treatment of the compound forms is more systematic than Anderson's or Black's. Anderson compensates with concrete case citations for *comperuit ad diem*, making it the go-to source for procedural research in nineteenth-century American practice.

Rapalje & Lawrence's entry, as reproduced in the source material, does not contain a useful standalone definition of *dies* — the excerpt appears to be from the adjacent entry on the Dialogue of the Exchequer (*Dialogus de Scaccario*), a twelfth-century treatise on English royal finance. Researchers should not rely on Rapalje for this term.

Black's 2nd edition excerpt as provided does not contain a *dies* entry — the reproduced text is from the *dicta* entry. Researchers should consult Black's 1st edition and Burrill as primary historical sources for this term.

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Jurisdictional Note

Civil law jurisdictions derived from Roman law — including Louisiana, Quebec, and mixed jurisdictions in South Africa and Scotland — preserve distinctions between *dies certus* and *dies incertus* and between *dies utiles* and continuous days in their prescription and legacy rules. Common law jurisdictions generally abandoned these distinctions in favor of statutory time calculation rules, but the Latin terminology survives in older case law and treatises from all systems.

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Encyclopedia Cross-Reference

See Law Mind Encyclopedia: Time Computation in Legal Proceedings; Court Days and Juridical Days; Roman Law of Legacies and Conditions.

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DIESmain

Black's Law Dictionary • 1891

Lat. A day; days. Days for ap- pearance in court. Provisions or mainte- J nance for a day. The king's rents were an- ciently reserved by so many days' provisions. Spelman; Cowell; Blount.

DIESmain

Rapalje & Lawrence • 1888

(386) whole establishment of the exchequer as a court and an office of revenue; giving an exact and satisfactory account of the officers and their duties, with all matters concerning that court, during its highest grandeur, in the reign of Henry II. This is done in a style somewhat superior to the Law-Latinity of those days. (1 Reeves Hist. Eng. Law 220.) -Wharton. DIANATIC.-A logical reasoning in a progressive manner, proceeding from one subject to another.-Encyc. Lond.

DIESmain

Anderson's Dictionary of Law • 1890

L. A day; the day. Ad diem. At the day; on the very day: as, the ad diem demand of a bill.8 Comperuit ad diem. He appeared at the day. A plea that the defendant in an action upon a bail bond appeared on the day designated in the bond. Murray v. N. Y. Life Ins. Co., 30 Hun, 429 (1883); Bradley v. Mut. Benefit Co., 45 N. Y. 422 (1871); Cluff v. Mut. Benefit Life Ins. Co., 95 Mass. 316 (1866). 2 Cluff v. Mut. Benefit Life Ins. Co., 99 Mass. 326 (1868). 3 Darrow v. Family Fund Society, 42 Hun, 245 (1886). See Williams v. Turner, 10 Yerg. 289 (1837); Wardell v. Allaire, 20 N. J. L. 9-16 (1842), cases; Davies v. Steele, 38 N. J. E. 170-73 (1884); 37 id. 81; Gray v. Bridgeforth, 33 Miss. 344 (1857); Wilson v. Wilson, 32 Barb. 332 (1860); Re Merceron's Trusts, 4 Ch. Div. 182 (1876): 20 Moak, 759; Snyder's Appeal, 95 Pa. 177-81 (1880), cases; Magrum v. Piester, 16 S. C. 323-24 (1881); Quigley v. Gridley, 132 Mass. 37 (1882), cases; Schmaunz v. Göss, ib. 145 (1882). • Wallis v. Woodland, 32 Md. 104 (1869); Moffat v. Strong, 10 Johns. *15 (1813). • Williams, R. P., 4 Rawle's ed., 207, cases; 26 Am. Law Rev. 107-15 (1888), cases. 7 Bank of Louisville v. Trustees of Public Schools, 83 Ky. 231-32 (1885), cases. 8 101 U. S. 565. Solvit ad diem. He paid on the day. Solvit post diem. He paid after the day. Pleas to actions on bonds for the payment of money. Dies a quo. The day from which. Dies ad quem. The day to which. The day from which, and the day to which, to compute time. Dies dominicus. The Lord's day - Sunday. Dies juridicus. A judicial or court day. Dies dominicus non est juridicus. Sunday is a non-judicial day - is not a day for court business, except as to the issue and return of criminal process. Whence dies non (juridicus): a non-judicial day. Dies non juridicus means only that process ordinarily cannot issue, be executed, or returned, and that courts do not sit, on that day. It does not mean that no judicial action can then be had. See SUNDAY. A civil process awarded or a judgment entered on a holiday is not void. See HOLIDAY. Quarto die post. On the fourth day thereafter. On every return-day in the term the person summoned has three days of grace, beyond the day named in the writ, in which to make his appearance, and if he appears on the fourth day inclusive, quarto die post, it is sufficient. The feudal law allowed three distinct days of citation, before the defendant was adjudged contumacious for not appearing. At the beginning of each term, the court does not usu ally sit for the dispatch of business till the fourth or appearance day.

diesverb

Wiktionary (English) • 2026

Wiktionary contributors • CC BY-SA 4.0 • via Kaikki
Extracted and formatted for display by Law Mind. Source link opens the current Wiktionary page and its contributor history; it is not a frozen copy of this extract.

third-person singular simple present indicative of die

Diesname

Wiktionary (English) • 2026

One of the Protogenoi, the Protogenos personification of day. She is the daughter of fellow Protogenoi, Nox/Nyx (Night) and Erebus (Darkness), and sister-wife of Aether. She is the Roman counterpart of Hemera. | A surname from Spanish.

diesnoun

Wiktionary (English) • 2026

plural of die (when used in the sense of a pattern / of obsolete spelling of dye)

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