Resolve a local time to an exact UTC instant with explicit DST ambiguity handling, busines
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.
10000 (raw units)
price
38
calls / 30d
8
unique payers
2026-09-18
updated
Provider
chrono.schemasure.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x9876af0F6D8Ed5155Cd02d1ca56D128601612690",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"ambiguity_policy": "reject",
"local_time": "2026-11-01T01:30:00",
"timezone": "America/New_York"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"confidence": 1,
"data_versions": {
"holidays": "2026.08.03",
"temporal_source": "polyfill",
"tzdb": "2026c"
},
"evidence": [],
"ok": true,
"policy_version": "2026-08-03.1",
"request_hash": "sha256:7c1e...b904",
"result": {
"ambiguity": "unique",
"business_days_result": null,
"candidates": [],
"comparisons": [
{
"local_time": "2026-06-15T14:30:00",
"offset": "+01:00",
"timezone": "Europe/London"
}
],
"coverage": {
"calendar": "US-NY",
"provenance": "US OPM (public domain)",
"years": [
2026,
2027
]
},
"is_holiday": false,
"is_weekend": false,
"is_working_day": true,
"next_valid_working_instant": "2026-06-15T13:30:00Z",
"offset": "-04:00",
"overlap": {
"has_overlap": true,
"windows": [
{
"end": "2026-06-15T16:00:00Z",
"start": "2026-06-15T13:00:00Z"
}
]
},
"timezone": "America/New_York",
"utc_instant": "2026-06-15T13:30:00Z"
},
"risk_codes": [],
"verdict": "resolved",
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"oneOf": [
{
"required": [
"local_time"
]
},
{
"required": [
"instant"
]
}
],
"properties": {
"add_business_days": {
"description": "Move this many working days from the resolved date, skipping the calendar's weekend days and its public holidays. 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"
}
}
}Use it
curl
curl "https://chrono.schemasure.com/v1/business-time" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://chrono.schemasure.com/v1/business-time");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://chrono.schemasure.com/v1/business-time")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/1124.json, and this resource appears in /discovery/resources and /discovery/search.