{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.sunday","code":"thing-q132","url":"https://ver.cy/models/thing/q132/","name":"Sunday","alternateNames":["Lord's Day","Tulip Sunday","Sunday nearest to November 11","June 7, 1914","5 January 1800","March 12, 1837","June 14, 1914","25 August 1816","September 12, 1897","September 22, 1907","November 6, 1836","December 25, 1927"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.TME"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The day of the week between Saturday and Monday, the first day of the week in some calendars and the last in ISO 8601; a day of rest and worship in many Christian traditions.","purpose":"Let an agent handle Sunday as a weekday with numbering conventions, legal rules on trading and work, and religious significance.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Day 7 in ISO weeks, day 1 in some other conventions","Rest day in many countries, with trading laws","Christian day of worship","Named Sundays mark feasts and commemorations"],"structure":{"bundles":[{"id":"calendar","name":"Calendar","description":"Position and numbering.","layers":[{"id":"position","name":"Position","description":"First or last day.","findings":[{"id":"position-finding","name":"Position","description":"Position in the week.","questions":[{"text":"Is Sunday the first or last day of the week in this context?","kind":"definition"},{"text":"Which convention does the software use?","kind":"boundary"}]}]},{"id":"date","name":"Date","description":"Which Sunday.","findings":[{"id":"date-finding","name":"Date","description":"The specific Sunday.","questions":[{"text":"Which calendar date is meant?","kind":"definition"},{"text":"Is it a named Sunday?","kind":"definition"}]}]}]},{"id":"rules","name":"Rules","description":"Trading and work.","layers":[{"id":"trading","name":"Trading","description":"Shop hours.","findings":[{"id":"trading-finding","name":"Trading rules","description":"Rules on trading.","questions":[{"text":"Are shops allowed to open on Sunday here, and for how long?","kind":"boundary"},{"text":"Which exemptions apply?","kind":"boundary"}]}]},{"id":"work","name":"Work","description":"Rest-day rules.","findings":[{"id":"work-finding","name":"Work rules","description":"Rules on Sunday work.","questions":[{"text":"What rights do workers have about Sunday work?","kind":"boundary"},{"text":"Is extra pay required?","kind":"boundary"}]}]}]},{"id":"religion-and-culture","name":"Religion and culture","description":"Observance.","layers":[{"id":"worship","name":"Worship","description":"Services.","findings":[{"id":"worship-finding","name":"Observance","description":"Religious observance.","questions":[{"text":"How is Sunday observed in this tradition?","kind":"definition"},{"text":"Which named Sundays fall this year?","kind":"measurement"}]}]},{"id":"customs","name":"Customs","description":"Social customs.","findings":[{"id":"customs-finding","name":"Customs","description":"Customs and leisure.","questions":[{"text":"What customs are associated with Sunday here?","kind":"definition"},{"text":"How are they changing?","kind":"measurement"}]}]}]},{"id":"deadlines","name":"Deadlines","description":"Sunday and time limits.","layers":[{"id":"rule","name":"Rule","description":"Deadline extension.","findings":[{"id":"rule-finding","name":"Deadline rule","description":"How deadlines are treated.","questions":[{"text":"Does a deadline falling on Sunday move to Monday here?","kind":"boundary"},{"text":"Under which rule?","kind":"provenance"}]}]},{"id":"services","name":"Services","description":"What is open.","findings":[{"id":"services-finding","name":"Services","description":"Services available.","questions":[{"text":"Which public services operate on Sunday?","kind":"definition"},{"text":"Where can urgent help be found?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Calculate and convert Sundays across calendars and week-numbering systems.","Schedule events while noting whether a Sunday is a rest day, worship day or working day for the people involved."],"mustNot":["Assume Sunday is the first or last day of the week without checking the calendar convention in use.","Book work, deliveries or noise on a Sunday where law or the affected people's observance forbids it.","Assume everyone observes Sunday as a religious day."],"requiresHuman":["Requiring someone to work on a Sunday against their religious observance."]},"ethics":{"considerations":["Sunday rest has religious and labour significance that schedules can override.","Week-start mismatches cause off-by-one errors in rotas and contracts."],"affectedParties":["Workers","Worshippers","Schedulers"]},"owners":{"steward":"Nobody: a calendar day held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"Q1445650","type":"parent","note":"registry parent class"},{"target":"Q573","type":"parent","note":"registry parent class"},{"target":"day","type":"related","note":"weekday"},{"target":"week","type":"related","note":"seven days"},{"target":"holiday or rest day","type":"related","note":"in many places"},{"target":"Sunday trading law","type":"related","note":"shop hours"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.sunday","Wikidata: Q132 (https://www.wikidata.org/wiki/Q132)","ISO 8601 weekday number: 7 Monday is 1"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Calendar position after Saturday","ISO 8601 day number 7","Named Sundays such as Easter Sunday or Remembrance Sunday","Not a thing to see; a day on the calendar."]},"capabilities":{"applicability":"required","items":["schedule around it","observe it religiously","regulate trading and work on it","number it, as day 7 in ISO 8601"]},"hazards":{"applicability":"required","items":["Week-start mismatch in software","Assuming shops are open or closed without checking local law","Deadlines falling on Sundays"]},"interfaces":{"applicability":"required","items":["ISO 8601","Sunday trading laws","Working time law on rest days"]},"context":{"applicability":"required","items":["Rest, worship, family and leisure in many societies.","ordinary Sundays","named Sundays such as Easter Sunday, Palm Sunday, Remembrance Sunday"]}},"sources":[{"title":"Wikidata item Q132: Sunday","url":"https://www.wikidata.org/wiki/Q132","note":"identity and sense of the item"},{"title":"Wikipedia: Sunday","url":"https://en.wikipedia.org/wiki/Sunday","note":"general description of the item"}],"openQuestions":["Should weekdays be separate entries?","How should named Sundays be linked?","The registry entry has merged aliases with specific dates; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q132/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q132/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T05:22:06Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:25+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}