Geography
Timezone Lookup by Coordinates
Find the IANA timezone for any latitude / longitude: returns the timezone name (e.g. Asia/Shanghai), the current UTC offset, whether daylight saving time is active, the local wall-clock time, and the nearest reference cities. Fully offline — uses a built-in city/timezone reference database with nearest-reference matching.
Quick start
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/timezone-lookup-by-coordinates' \
-H 'Content-Type: application/json' \
-d '{"lat":39.9042,"lon":116.4074,"precision":2}'API reference
Send a POST request with your inputs as JSON. File parameters require a separate upload first.
Endpoint
POST https://api.elysiatools.com/en/api/tools/timezone-lookup-by-coordinatesParameters
| Name | Type | Required | Description |
|---|---|---|---|
| lat | number | Yes | — |
| lon | number | Yes | — |
| precision | number | Yes | — |
Response format
HTML result
{
"result": "<div>Processed HTML content</div>",
"error": "Error message (optional)",
"message": "Notification message (optional)",
"metadata": {
"key": "value"
}
}MCP integration
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Server configuration
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-timezone-lookup-by-coordinates": {
"name": "timezone-lookup-by-coordinates",
"description": "Find the IANA timezone for any latitude / longitude: returns the timezone name (e.g. Asia/Shanghai), the current UTC offset, whether daylight saving time is active, the local wall-clock time, and the nearest reference cities. Fully offline — uses a built-in city/timezone reference database with nearest-reference matching.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=timezone-lookup-by-coordinates",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}List available tools
After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Call this tool
Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "timezone-lookup-by-coordinates",
"arguments": {
"lat": 39.9042,
"lon": 116.4074,
"precision": 2
}
}
}