{ "model": { "rank": 7198, "code": "thing-q41825", "model_id": "vr.tr.day-of-the-week", "name": "day of the week", "purpose": "Let an agent explain the day of the week, relay the seven-day cycle, standards, cultural and religious variation and calculation from calendar and cultural sources, and distinguish days of the week from dates, weekdays versus weekends, working days and named feast days.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.TME", "industry": "", "version": "", "url": "/models/thing/q41825/", "tier": 2, "score": 56, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 56, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.day-of-the-week", "source": { "dataset": "wikidata", "item": "Q41825", "url": "https://www.wikidata.org/wiki/Q41825", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-14T01:54:20Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q41825", "registryId": "vr.tr.day-of-the-week", "name": "day of the week", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.TME" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q41825/", "model": { "registry_id": "vr.tr.day-of-the-week", "name": "day of the week", "purpose": "Let an agent explain the day of the week, relay the seven-day cycle, standards, cultural and religious variation and calculation from calendar and cultural sources, and distinguish days of the week from dates, weekdays versus weekends, working days and named feast days.", "definition": "One of the seven named divisions of the week, Monday through Sunday, a recurring time interval used across calendars for scheduling work, worship and rest, with the seven-day week having roots in Babylonian astronomy and the Abrahamic religious tradition; ISO 8601 treats Monday as the first day, while many countries and religions treat Sunday or Saturday as the first or as a rest day. Day-of-week naming differs by language, often after classical planets or numbers, and algorithms such as Zeller s congruence and Sakamoto s method compute the weekday of any date.", "what_it_is_for": "Dividing and scheduling the week.", "affordances": [ "explain the cycle and standards", "relay cultural and religious variation", "relay calculation methods", "distinguish related concepts" ], "distinguishing_features": [ "Seven-day cycle", "Recurring", "Cultural first-day variation", "Computable from dates" ], "appearance": "Not a physical object; labels on calendars and schedules.", "visual_identification": [ "A named division of the seven-day week", "Day of the week", "Dates are calendar points; weekdays exclude the weekend; working days depend on rules; feast days are specific observances" ], "physical_properties": [ { "quantity": "days in a week", "typical_range": "7", "unit": "count", "note": "" }, { "quantity": "ISO 8601 first day", "typical_range": "Monday", "unit": "note", "note": "" }, { "quantity": "planetary naming", "typical_range": "Sun, Moon and five planets", "unit": "note", "note": "in many languages" } ], "families_and_kinds": [ "weekdays", "weekend days", "rest days", "named days" ], "related_models": [ { "relation": "is a kind of", "target": "time interval", "why": "in registry terms" }, { "relation": "is part of", "target": "week", "why": "" }, { "relation": "is contrasted with", "target": "date", "why": "" }, { "relation": "is contrasted with", "target": "weekend", "why": "" } ], "identifiers": [], "standards_and_regulation": [ "ISO 8601 week and day numbering", "National working time and rest-day laws" ], "failure_modes_and_hazards": [ "First-day-of-week confusion in software", "Assuming a universal rest day", "Locale scheduling errors" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What a day of the week is.", "rationale": "Definition.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is a day of the week, and how does it differ from dates, weekdays and weekends, working days and feast days?", "kind": "definition" }, { "text": "Is the question about scheduling across locales, where the first day and rest days vary?", "kind": "boundary" } ] } ] }, { "id": "cycle", "name": "Cycle", "description": "The seven-day cycle.", "findings": [ { "id": "cycle-finding", "name": "Cycle", "description": "Cycle.", "questions": [ { "text": "Why does the week have seven days?", "kind": "definition" }, { "text": "Which entry fits week?", "kind": "action" } ] } ] } ] }, { "id": "history", "name": "History", "description": "History.", "rationale": "Sources.", "layers": [ { "id": "origins", "name": "Origins", "description": "Origins.", "findings": [ { "id": "origins-finding", "name": "Origins", "description": "Origins.", "questions": [ { "text": "How did the seven-day week arise from Babylonian and religious traditions?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "naming", "name": "Naming", "description": "Day names.", "findings": [ { "id": "naming-finding", "name": "Naming", "description": "Naming.", "questions": [ { "text": "How are weekdays named after planets and gods in different languages?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "standards", "name": "Standards", "description": "Standards.", "rationale": "Regulation.", "layers": [ { "id": "iso", "name": "ISO", "description": "ISO 8601.", "findings": [ { "id": "iso-finding", "name": "ISO", "description": "ISO.", "questions": [ { "text": "How does ISO 8601 number days and weeks?", "kind": "provenance" }, { "text": "Which entry fits ISO 8601?", "kind": "action" } ] } ] }, { "id": "firstday", "name": "First day", "description": "First day of the week.", "findings": [ { "id": "firstday-finding", "name": "First day", "description": "First day.", "questions": [ { "text": "Which countries treat Sunday, Monday or Saturday as the first day?", "kind": "provenance" }, { "text": "Is the information current?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Calculation.", "rationale": "Science.", "layers": [ { "id": "algorithms", "name": "Algorithms", "description": "Weekday algorithms.", "findings": [ { "id": "algorithms-finding", "name": "Algorithms", "description": "Algorithms.", "questions": [ { "text": "How do Zeller s congruence and similar methods find the weekday of a date?", "kind": "measurement" }, { "text": "Which entry fits Zeller s congruence?", "kind": "action" } ] } ] }, { "id": "religion", "name": "Religion", "description": "Sabbath and rest days.", "findings": [ { "id": "religion-finding", "name": "Religion", "description": "Religion.", "questions": [ { "text": "How do Sabbath and Friday prayers shape rest days, with traditions attributed?", "kind": "provenance" }, { "text": "Is the presentation neutral and attributed?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should each day be a separate entry?", "How should locale first-day settings be linked?", "How should weekday algorithms be documented?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a day of the week, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain the day of the week, relay the seven-day cycle, standards, cultural and religious variation and calculation from calendar and cultural sources, and distinguish days of the week from dates, weekdays versus weekends, working days and named feast days.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Described in 56 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a day of the week, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [], "standing": "Described in 56 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one day of the week from another, and a day of the week from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a day of the week sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a day of the week from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a day of the week passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a day of the week between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a day of the week, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a day of the week is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What day of the week is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of day of the week are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is day of the week operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of day of the week and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of day of the week?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as day of the week?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a day of the week came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a day of the week and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a day of the week is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a day of the week, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a day of the week, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a day of the week is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }