{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-14T00:33:07Z",
    "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",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T07:43:41+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:59+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q36669",
    "registryId": "vr.tr.daylight-saving-time",
    "name": "daylight saving time",
    "version": "0.2.0-wave.4",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "INF.KNW"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q36669/",
  "model": {
    "registry_id": "vr.tr.daylight-saving-time",
    "name": "daylight saving time",
    "purpose": "Let an agent explain daylight saving time, relay history, rules by region, effects and abolition debates from time standards, government and research sources with positions attributed, describe the named zones and regional practices, and distinguish DST from standard time, time zones, UTC offsets in general and permanent daylight time proposals.",
    "definition": "The practice of advancing clocks, usually by one hour, during the warmer months so that evenings have more daylight, called summer time in Europe, where the EU synchronises changes on the last Sundays of March and October, and daylight saving time in North America, as with Eastern Daylight Time; first adopted widely by Germany and Austria-Hungary in 1916, it is used in many but not all countries, with Italy and others following EU rules, and debates about abolishing clock changes, including a 2019 European Parliament vote not implemented by member states and US proposals for permanent daylight time, are attributed, citing effects on health, energy and safety.",
    "what_it_is_for": "Shifting clock time to use evening daylight.",
    "affordances": [
      "explain history and rules",
      "relay regional practices",
      "describe named zones",
      "present abolition debates with attribution"
    ],
    "distinguishing_features": [
      "Seasonal change",
      "One-hour shift typical",
      "Regional variation",
      "Contested benefits"
    ],
    "appearance": "Not a physical object; seen in clock changes and time zone abbreviations.",
    "visual_identification": [
      "Seasonal clock advance",
      "Eastern Daylight Time, summer time in Europe, daylight saving time in Italy",
      "Standard time is the base; time zones are regions; UTC offsets define local time; permanent daylight time would end changes"
    ],
    "physical_properties": [
      {
        "quantity": "first national adoption",
        "typical_range": "1916",
        "unit": "year",
        "note": "Germany and Austria-Hungary"
      },
      {
        "quantity": "EU summer time rules",
        "typical_range": "last Sunday of March to last Sunday of October",
        "unit": "note",
        "note": "Directive 2000/84/EC"
      },
      {
        "quantity": "European Parliament vote to end changes",
        "typical_range": "2019",
        "unit": "year",
        "note": "not implemented, check current status"
      }
    ],
    "families_and_kinds": [
      "European summer time",
      "North American daylight time",
      "southern hemisphere DST",
      "double summer time historically"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "civil time",
        "why": "in registry terms"
      },
      {
        "relation": "is regulated by",
        "target": "Directive 2000/84/EC",
        "why": "in the EU"
      },
      {
        "relation": "includes",
        "target": "Eastern Daylight Time",
        "why": ""
      },
      {
        "relation": "is contrasted with",
        "target": "standard time",
        "why": ""
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "EU Directive 2000/84/EC",
      "US Energy Policy Act of 2005 DST dates",
      "IANA time zone database"
    ],
    "failure_modes_and_hazards": [
      "Stale rules and dates",
      "Partisan framing of abolition debates",
      "Scheduling errors across zones"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Explain daylight saving time and current rules with dates and sources.",
        "Convert times across zones and dates, accounting for daylight saving changes."
      ],
      "must_not": [
        "Present stale rules or dates as current.",
        "Schedule events without accounting for different change dates across countries.",
        "Take a side on abolition debates while presenting it as fact."
      ],
      "requires_human": [
        "Changing time zone settings on systems many people rely on."
      ]
    },
    "ethics": {
      "considerations": [
        "Scheduling errors can make people miss medical, legal or travel appointments."
      ],
      "affected_parties": [
        "Travellers",
        "Shift workers",
        "Users of scheduling systems"
      ]
    },
    "owners": {
      "steward": "National governments set time rules; time zone databases record them.",
      "master_systems": [
        "Time zone databases"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q36669: daylight saving time",
      "url": "https://www.wikidata.org/wiki/Q36669",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Daylight saving time",
      "url": "https://en.wikipedia.org/wiki/Daylight_saving_time",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What daylight saving time is.",
        "rationale": "Attribution.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What is daylight saving time, and how does it differ from standard time, time zones, UTC offsets and permanent daylight time?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the question about current clock change dates, which need current sources, history or health debates?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "zones",
            "name": "Zones",
            "description": "Named zones.",
            "findings": [
              {
                "id": "zones-finding",
                "name": "Zones",
                "description": "Zones.",
                "questions": [
                  {
                    "text": "What are Eastern Daylight Time, European summer time and Italy s practice?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits the specific zone?",
                    "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 Willett s proposal and the 1916 wartime adoption start DST?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "rules",
            "name": "Rules",
            "description": "Current rules.",
            "findings": [
              {
                "id": "rules-finding",
                "name": "Rules",
                "description": "Rules.",
                "questions": [
                  {
                    "text": "What are current DST rules in the EU and US, checked against current sources?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "effects",
        "name": "Effects",
        "description": "Effects and debates.",
        "rationale": "Attribution.",
        "layers": [
          {
            "id": "health",
            "name": "Health",
            "description": "Health effects.",
            "findings": [
              {
                "id": "health-finding",
                "name": "Health",
                "description": "Health.",
                "questions": [
                  {
                    "text": "What do sleep researchers and medical bodies say about clock changes and health, with positions attributed?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the presentation neutral and attributed?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "energy",
            "name": "Energy",
            "description": "Energy savings.",
            "findings": [
              {
                "id": "energy-finding",
                "name": "Energy",
                "description": "Energy.",
                "questions": [
                  {
                    "text": "What do studies find about energy savings from DST, with findings attributed?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits daylight saving time energy studies?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Policy.",
        "rationale": "Regulation.",
        "layers": [
          {
            "id": "eu",
            "name": "EU",
            "description": "EU abolition proposal.",
            "findings": [
              {
                "id": "eu-finding",
                "name": "EU",
                "description": "EU.",
                "questions": [
                  {
                    "text": "What happened to the EU proposal to end clock changes, checked against current sources?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the information current?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "tz",
            "name": "Time zone data",
            "description": "IANA database.",
            "findings": [
              {
                "id": "tz-finding",
                "name": "Time zone data",
                "description": "Time zone data.",
                "questions": [
                  {
                    "text": "How does the IANA time zone database track DST changes for software?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits tz database?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "How should the status of EU and US abolition proposals be kept current?",
    "Should national DST histories be separate entries?",
    "How should the IANA database be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}