{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.time","code":"thing-q11471","url":"https://ver.cy/models/thing/q11471/","name":"time","alternateNames":["paid time off","real-time","Moscoso","crystallization time","biological half-life","Döp","plasma half-life","Trading day","late","graduation time","local time","Rancata"],"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 continuing progression of events from past through present to future, measured in seconds and larger units, and used to order events and measure durations.","purpose":"Let an agent handle time as instants, durations and intervals with units, time scales and zones, and avoid the classic errors of mixing them.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Instant, duration and interval are different things","Time scales differ: TAI, UTC, GPS time, local time","Local time depends on zone and daylight saving","Domain-specific times such as half-lives are durations"],"structure":{"bundles":[{"id":"kind","name":"Kind of time value","description":"Instant, duration or interval.","layers":[{"id":"instant","name":"Instant","description":"A point in time.","findings":[{"id":"instant-finding","name":"Instant","description":"The instant and its zone.","questions":[{"text":"Is this an instant, and in which time zone or scale?","kind":"definition"},{"text":"How precise is it?","kind":"measurement"}]}]},{"id":"duration","name":"Duration","description":"A length of time.","findings":[{"id":"duration-finding","name":"Duration","description":"The duration and unit.","questions":[{"text":"What duration is meant, in which unit?","kind":"measurement"},{"text":"Does it cross a daylight saving change?","kind":"boundary"}]}]}]},{"id":"scales-and-zones","name":"Scales and zones","description":"Which clock.","layers":[{"id":"scale","name":"Time scale","description":"UTC, TAI, GPS.","findings":[{"id":"scale-finding","name":"Time scale","description":"The scale used.","questions":[{"text":"Which time scale is used?","kind":"definition"},{"text":"How are leap seconds handled?","kind":"boundary"}]}]},{"id":"zone","name":"Time zone","description":"Local time.","findings":[{"id":"zone-finding","name":"Zone","description":"The zone and rules.","questions":[{"text":"Which IANA time zone applies?","kind":"definition"},{"text":"Have the zone rules changed recently?","kind":"provenance"}]}]}]},{"id":"measurement","name":"Measurement","description":"Clocks and synchronisation.","layers":[{"id":"clock","name":"Clock","description":"Reference and accuracy.","findings":[{"id":"clock-finding","name":"Clock source","description":"The reference clock.","questions":[{"text":"Which clock or reference produced this time?","kind":"provenance"},{"text":"How accurate is it?","kind":"measurement"}]}]},{"id":"sync","name":"Synchronisation","description":"NTP, PTP, GNSS.","findings":[{"id":"sync-finding","name":"Synchronisation","description":"How clocks agree.","questions":[{"text":"How are clocks synchronised?","kind":"definition"},{"text":"What is the maximum offset between systems?","kind":"measurement"}]}]}]},{"id":"use","name":"Use","description":"Scheduling and ordering.","layers":[{"id":"scheduling","name":"Scheduling","description":"Across zones.","findings":[{"id":"scheduling-finding","name":"Schedule","description":"Schedule and zone handling.","questions":[{"text":"In which zone should this event be shown to each participant?","kind":"action"},{"text":"What happens at daylight saving changes?","kind":"boundary"}]}]},{"id":"ordering","name":"Ordering events","description":"Causality in systems.","findings":[{"id":"ordering-finding","name":"Ordering","description":"How events are ordered.","questions":[{"text":"Can timestamps be trusted to order these events?","kind":"boundary"},{"text":"Is a logical clock needed?","kind":"definition"}]}]}]}]},"agentConduct":{"may":["Record times with time zone or in UTC and synchronise clocks it is authorized to manage.","Convert between time zones using an up-to-date time zone database."],"mustNot":["Mix local times and UTC in one record without labels.","Ignore daylight saving changes when scheduling.","Alter timestamps in logs or records after the fact.","Change the clock of a system it does not administer."],"requiresHuman":["Adjusting clocks in systems where time stamps carry legal or safety meaning."]},"ethics":{"considerations":["Timestamps are evidence, and tampering with them can deny people justice.","Errors in time can make people miss medicines, trains or court dates."],"affectedParties":["People relying on schedules","System operators"]},"owners":{"steward":"Nobody owns time; national metrology institutes keep official time.","roles":[],"masterSystems":[]},"relations":[{"target":"Q133250","type":"parent","note":"registry parent class"},{"target":"day, week, year","type":"related","note":"calendar units"},{"target":"clock","type":"related","note":"instruments"},{"target":"event","type":"related","note":"events occur in time"},{"target":"calendar date","type":"related","note":"a date is a whole day, not an instant"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.time","Wikidata: Q11471 (https://www.wikidata.org/wiki/Q11471)","ISO 8601 timestamp: YYYY-MM-DDThh:mm:ssZ standard representation","IANA time zone: Region/City time zone database"]},"properties":{"applicability":"not-applicable","items":["SI base unit: second s - defined by the caesium-133 hyperfine transition","leap seconds inserted since 1972: 27 seconds - as of 2026"]},"recognition":{"applicability":"optional","items":["Timestamps such as 2026-09-11T07:52:54Z","Durations such as PT3H or half-lives","Clock faces and displays","Not visible; shown by clocks, calendars and timestamps."]},"capabilities":{"applicability":"required","items":["measure it, with clocks referenced to atomic time","record instants, with timestamps and time zones","compute durations and intervals","schedule and coordinate, across zones"]},"hazards":{"applicability":"required","items":["Time zone and daylight saving errors","Clock drift and unsynchronised systems","Leap second handling bugs","Mixing local and UTC timestamps"]},"interfaces":{"applicability":"required","items":["SI definition of the second","ITU-R TF.460 on UTC","ISO 8601 and RFC 3339","National time zone law"]},"context":{"applicability":"required","items":["Ordering events, measuring durations, coordinating activity and scheduling.","instants and timestamps","durations and intervals","time scales: UTC, TAI, GPS","domain times: half-life, crystallisation time, paid time off"]}},"sources":[{"title":"Wikidata item Q11471: time","url":"https://www.wikidata.org/wiki/Q11471","note":"identity and sense of the item"},{"title":"Wikipedia: Time","url":"https://en.wikipedia.org/wiki/Time","note":"general description of the item"}],"openQuestions":["Should instants, durations and intervals be separate entries?","How should the registry require time zones on timestamps?","The registry entry has merged aliases such as paid time off; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q11471/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q11471/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T05:00:00Z","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 2026-10-06T19:51:53+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}}