Definition
A common day was, in old English court practice, an ordinary return day — one of the fixed, recurring days in the legal calendar on which parties were expected to appear and routine court business was conducted. It stood in contrast to special or extraordinary days appointed for particular proceedings.
The term derives from the Latin *dies communis*, meaning a shared or ordinary day, and referred specifically to those regular festival-adjacent days that structured the English legal term system. Examples include the Octabis Michaelis (the octave, or eighth day, of Michaelmas) and the Quindena Paschae (the quinzime, or fifteenth day after Easter) — fixed markers around which the medieval common law courts organized their calendars.
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Common Language
Modern common usage (Wiktionary): "Common day" carries no distinct legal meaning in modern usage; the phrase in ordinary English simply means an ordinary or unremarkable day, as opposed to a holiday or special occasion.
Historical common usage (Webster's 1913): Not separately defined; "common" as an adjective meant usual, ordinary, or shared, and "day" retained its standard meaning.
The gap here is primarily historical rather than semantic. The legal term is not a distortion of plain English so much as a technical appropriation of it: "common" does in legal usage what it does in plain speech — it denotes the ordinary rather than the exceptional — but the phrase operated as a term of art within a highly formalized court calendar that no longer exists in any common law jurisdiction. A modern reader encountering the phrase in an old pleading or statute would understand the words individually but would miss entirely that it referenced a specific procedural institution.
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Why It Matters in Research
This term is essentially a fossil — it will not appear in modern practice materials, statutes, or judicial opinions except in historical quotation or annotation. Researchers are most likely to encounter it in:
1. **Pre-modern English statutes and plea rolls.** The statutes cited in the historical sources — including references to the reigns of Richard II and Henry III — use the term in its technical sense. A researcher reading medieval or early modern English legislation without this gloss may mistake "common day" for a casual expression rather than a term fixing procedural deadlines or appearance obligations.
2. **Early American legal sources.** American lawyers trained on Blackstone and Coke-era materials brought the terminology into early colonial and post-independence practice. It may appear in early American court records, particularly those modeled on English common law forms, though it became obsolete quickly as American courts developed their own calendar systems.
3. **Cross-referencing with return days and term days.** Understanding "common day" requires understanding the medieval English term system — the division of the legal year into Michaelmas, Hilary, Easter, and Trinity terms — and the hierarchy of return days within each term. Researchers working on early English or colonial procedure will need these related concepts to make sense of scheduling provisions in old writs and pleadings.
4. **Watch for Rapalje & Lawrence transcription artifacts.** The Law Mind corpus version of the Rapalje & Lawrence entry contains an apparent typesetting error or scanning artifact — the phrase "has the charge or control of any signal points" appears in the middle of the definition, belonging to an adjacent entry. Do not treat this as part of the definition of "common day."
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Historical Dictionary Support
All three historical sources agree on the substance: a common day was an ordinary day in court, a routine return day as opposed to a specially appointed one. Burrill is the most informative, providing the Latin root (*dies communis*), two statutory citations, and illustrative examples of specific common days (Octabis Michaelis, Quindena Paschae). Black's and Rapalje & Lawrence are brief, each routing the reader to Cowell's Interpreter and Termes de la Ley for further elaboration.
Burrill's cross-reference to "Dies communis" is the most useful navigational pointer: the Latin form entry, where it appears in historical dictionaries, typically contains fuller treatment of the calendar mechanics.
What the historical dictionaries do not address is the procedural consequence of a common day — what happened if a party failed to appear, how common days interacted with essoins (excuses for non-appearance), or how the system was modified or abolished. For that substance, researchers need to consult the underlying statutes and institutional works on early English procedure, particularly Blackstone's Commentaries on court terms and return days.
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Jurisdictional Note
This term belongs exclusively to the old English common law court system and jurisdictions that directly inherited its procedural forms. It has no operative meaning in any modern jurisdiction. American courts abandoned the English term-and-return-day system during the nineteenth century in favor of continuous court calendars.
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