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DST Transitions Lookup
x402
DST Transitions Lookup is a paid API for AI agents from timezone-time.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Returns all daylight saving time transitions for a given IANA time zone in a specified year, including exact UTC instants, before/after UTC offsets, and the clock change amount.
Price / call$0.02
Success—
StatusUnknown
How this service works
Daylight saving transitions of an IANA time zone in a year: exact UTC instants, offsets before and after, and the clock change.
Output
Returns a structured object containing the IANA time zone, the year queried, a list of DST transitions each with the exact UTC timestamp of the transition, the UTC offset before and after, and the clock change amount. Also includes a summary, verdict, and a disclaimer about data source quality.
Example use cases
Scheduling app DST boundary detection
“I need to know the exact UTC instants when daylight saving time starts and ends in Europe/London for 2025, along with the offset before and after each change, so I can handle scheduling correctly.”
Verify if a time zone observes DST
“Does Asia/Tokyo observe daylight saving time in 2025? If so, when do the transitions happen and how much do the clocks change?”
Historical DST lookup for a past year
“Can you look up all the DST transitions that happened in America/Los_Angeles back in 2010 — I need the UTC timestamps and the before/after offsets for each one.”
Technical details
Endpoint
GEThttps://timezone-time.x402tookit.com/dst-info?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically determine the exact UTC moments of DST transitions for a time zone in a given year — ideal for scheduling systems, calendar apps, or any workflow that must correctly handle clock changes. Prefer this over a general timezone-conversion endpoint when the specific question is about DST boundaries, not converting a specific datetime.
Side effects
- Invalid or unrecognized IANA time zone string returns an error or empty transitions
- Year outside 1970–2100 range may not be supported
- Time zones with no DST (e.g. Asia/Tokyo) return an empty transitions array
- Degraded mode may indicate reduced data quality via the 'degraded' flag
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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