{"slug":"chrono-schemasure-com-v1-business-time-42a06a","title":"Resolve a local time to an exact UTC instant with explicit DST ambiguity handlin","host":"chrono.schemasure.com","method":"POST","resource":"https://chrono.schemasure.com/v1/business-time","category":"other","description":"Resolve a local time to an exact UTC instant with explicit DST ambiguity handling, business-day arithmetic, public-holiday status, and working-hour overlap across timezones. Detects ambiguous and nonexistent local times instead of silently shifting them. 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Zero returns the date unchanged.","maximum":365,"minimum":-365,"type":"integer"},"ambiguity_policy":{"default":"reject","description":"How to read a local time that occurs twice or not at all. Matches Temporal's disambiguation vocabulary. The default, reject, returns verdict \"unknown\" with both candidate instants rather than silently picking one.","enum":["earlier","later","compatible","reject"],"type":"string"},"compare_with":{"description":"Other IANA zones to report the same instant in, and to intersect working hours with.","examples":[["Europe/London","Asia/Jerusalem"]],"items":{"type":"string"},"maxItems":5,"type":"array"},"holiday_calendar":{"description":"Jurisdiction whose public holidays and weekend definition apply. An unlisted value is rejected with UNSUPPORTED; this service never falls back to an empty holiday list.","enum":["AU-NSW","CA-BC","CA-ON","DE","FR","GB-ENG","GB-NIR","GB-SCT","IE","IL","IN","JP","NL","NZ","US","US-CA","US-NY"],"type":"string"},"instant":{"description":"An absolute ISO 8601 instant ending in Z or an explicit offset. Alternative to local_time; send exactly one of the two.","examples":["2026-11-01T05:30:00Z"],"type":"string"},"local_time":{"description":"ISO local date and time with NO offset and no Z suffix. This is the field whose meaning can be ambiguous, which is the point of the endpoint.","examples":["2026-11-01T01:30:00"],"pattern":"^\\d{4}-\\d{2}-\\d{2}[T ]\\d{2}:\\d{2}(:\\d{2})?$","type":"string"},"timezone":{"description":"IANA timezone identifier, resolved against tzdb 2026c.","examples":["America/New_York","Pacific/Chatham","Antarctica/Troll"],"minLength":1,"type":"string"},"working_hours":{"additionalProperties":false,"description":"Local business hours, defaulting to 09:00-17:00. end < start means the window crosses midnight.","properties":{"end":{"pattern":"^([01]\\d|2[0-3]):[0-5]\\d$","type":"string"},"start":{"pattern":"^([01]\\d|2[0-3]):[0-5]\\d$","type":"string"}},"required":["start","end"],"type":"object"}},"required":["timezone"],"title":"BusinessTimeRequest","type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"data_versions":{"description":"Declares the pinned IANA tzdb release, holiday dataset, and Temporal source.","type":"object"},"evidence":{"items":{"type":"object"},"type":"array"},"ok":{"type":"boolean"},"policy_version":{"type":"string"},"request_hash":{"type":"string"},"result":{"properties":{"ambiguity":{"enum":["unique","ambiguous","nonexistent"],"type":"string"},"business_days_result":{"type":["object","null"]},"candidates":{"description":"Both candidate instants when the local time is ambiguous or nonexistent.","items":{"type":"object"},"type":"array"},"comparisons":{"items":{"type":"object"},"type":"array"},"coverage":{"type":"object"},"is_holiday":{"type":"boolean"},"is_weekend":{"type":"boolean"},"is_working_day":{"type":"boolean"},"next_valid_working_instant":{"type":["string","null"]},"offset":{"type":["string","null"]},"overlap":{"type":["object","null"]},"timezone":{"type":"string"},"utc_instant":{"format":"date-time","type":["string","null"]}},"type":"object"},"risk_codes":{"items":{"type":"string"},"type":"array"},"verdict":{"description":"unknown when the local time is ambiguous or nonexistent under a reject policy.","enum":["resolved","unknown"],"type":"string"},"warnings":{"items":{"type":"string"},"type":"array"}},"required":["ok","verdict","result","request_hash","data_versions"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":1046,"error":null}],"description_full":"Resolve a local time to an exact UTC instant with explicit DST ambiguity handling, business-day arithmetic, public-holiday status, and working-hour overlap across timezones. Detects ambiguous and nonexistent local times instead of silently shifting them. Declares its IANA tzdb release and per-jurisdiction holiday provenance.","last_updated":"2026-09-24T07:39:14.409Z","schemes":["exact"]}