# Agent Kalender Hub – Zeitzone

> Agent Kalender Hub – Zeitzone is a paid API for AI agents from kalender.netzhandwerker.de, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Resolves the UTC offset and DST status for a given point in time and location (via coordinates or IANA time zone name), returning the exact offset and next DST transition to the minute.

## Facts

- Endpoint: POST https://kalender.netzhandwerker.de/zeitzone
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-kalender-hub-zeitzone-ab0e5851
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7usJidHV7HrSdgadlhBQr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-kalender-hub-zeitzone-ab0e5851 -d '<json body>'
```

Example prompt: What UTC offset and DST status applies to coordinates 48.2° latitude, 16.4° longitude on July 15 2025 at noon — and when is the next DST switchover?

## When to prefer this

Choose this endpoint when you need both the current UTC offset and the next DST transition time for a specific point in time, especially when you have raw GPS coordinates rather than a known time zone name. It resolves coordinates offline via polygon lookup, making it faster and more private than geocoding-based alternatives. Ideal for European locations including Germany and Austria where regional DST handling is well-covered.

## Known failure modes

- Neither zone nor lat/lon provided — validation error returned
- Coordinates fall in an ocean or unmapped region — zone resolution may fail
- Invalid IANA zone name — error response
- Datetime string not ISO 8601 — parsing error
- Extreme edge-case datetimes (far future) may have uncertain DST rules

## How this service works

Der Versatz wird für den angefragten Zeitpunkt gerechnet, die nächste Umstellung minutengenau gesucht. Koordinaten werden über eine Polygontabelle im Prozess aufgelöst.

## Output

Returns the UTC offset in hours/minutes for the requested location and datetime, whether DST is active, the IANA time zone name, and the precise timestamp (to the minute) of the next upcoming DST transition. The coordinates input is resolved against an internal polygon table without any external geocoding call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "lat": {
   "type": "number",
   "maximum": 90,
   "minimum": -90,
   "description": "Latitude, resolved to a zone offline."
  },
  "lon": {
   "type": "number",
   "maximum": 180,
   "minimum": -180
  },
  "zone": {
   "type": "string",
   "minLength": 1,
   "description": "IANA time zone name, for example Europe/Berlin. Either this or lat and lon."
  },
  "zeitpunkt": {
   "type": "string",
   "format": "date-time",
   "description": "Point in time to evaluate. Defaults to now."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-kalender-hub-zeitzone-ab0e5851/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kalender.netzhandwerker.de](https://www.zero.xyz/host/kalender.netzhandwerker.de/llms.txt)