{
  "aid": "chronosure.chrono.schemasure.com",
  "name": "ChronoSure",
  "type": "index",
  "description": "ChronoSure turns a local wall-clock time into an exact UTC instant, and tells you plainly when that is impossible. Every local time is classified as unique, ambiguous or nonexistent against a pinned IANA tzdb release; business-day arithmetic skips weekends and public holidays from a provenance-tagged dataset; and working-hour overlap is intersected across zones. There is no model and no heuristic anywhere in it: the same input always returns the same answer, and every response names the datasets that produced it.",
  "image": "https://chrono.schemasure.com/icon.svg",
  "tags": [
    "timezone",
    "business-days",
    "holidays",
    "dst",
    "scheduling",
    "working-hours",
    "iana-tzdb",
    "x402",
    "deterministic",
    "temporal",
    "calendar"
  ],
  "created": "2026-08-03",
  "modified": "2026-08-06",
  "specificationVersion": "0.18",
  "apis": [
    {
      "aid": "chronosure.v1.business-time",
      "name": "ChronoSure — Resolve a local time to a UTC instant with DST, holiday and working-hour context",
      "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. Declares its IANA tzdb release and per-jurisdiction holiday provenance.",
      "humanURL": "https://chrono.schemasure.com/docs",
      "baseURL": "https://chrono.schemasure.com/v1/business-time",
      "tags": [
        "timezone",
        "business-days",
        "holidays",
        "dst",
        "scheduling",
        "working-hours",
        "iana-tzdb",
        "x402",
        "deterministic",
        "temporal",
        "calendar"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://chrono.schemasure.com/openapi.json"
        },
        {
          "type": "x402",
          "url": "https://chrono.schemasure.com/.well-known/x402.json"
        },
        {
          "type": "Pricing",
          "url": "https://chrono.schemasure.com/.well-known/pricing.json"
        },
        {
          "type": "Benchmarks",
          "url": "https://chrono.schemasure.com/.well-known/benchmarks.json"
        },
        {
          "type": "LLMs",
          "url": "https://chrono.schemasure.com/llms.txt"
        }
      ]
    }
  ]
}