# geonames.place.timezone

Look up the timezone for any coordinates on Earth using the GeoNames database. Returns IANA timezone ID (e.g. "America/New_York", "Europe/London"), GMT offset, DST offset, raw (winter) offset, current local time, today's sunrise and sunset times (local), and the country at those coordinates. Useful for scheduling tasks across time zones, converting UTC timestamps, or annotating location data with timezone context. CC BY 4.0 open data, no upstream cost.

Agent View of the PolicyLayer registry record for `geonames.place.timezone`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/geonames.place.timezone

## Facts

- Tool: `geonames.place.timezone`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `language` | string | no | ISO 639-1 language code for the country name in the response (e.g. "en", "de") |
| `latitude` | number | yes | Latitude of the location to look up (-90 to 90, e.g. 40.7128 for New York City) |
| `longitude` | number | yes | Longitude of the location to look up (-180 to 180, e.g. -74.0060 for New York City) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "geonames.place.timezone",
    "arguments": {
      "latitude": 0,
      "longitude": 0
    }
  }
}
```

## Why geonames.place.timezone is rated Low

Retrieves timezone and location data with no side effects or external state changes.

From the tool's own definition: "Look up timezone for coordinates. Returns IANA timezone ID, GMT offset, sunrise/sunset times."

## Use case

AI agents call geonames.place.timezone to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "geonames.place.timezone": {}
  }
}
```

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## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase