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GET /v1/add

Add/subtract a duration

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/datetime-api

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

curl "https://api.oanor.com/datetime-api/v1/add" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/datetime-api/v1/add", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/datetime-api/v1/add");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/datetime-api/v1/add",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "input": "2026-05-30T00:00:00Z",
        "result_iso": "2026-06-09T00:00:00.000Z",
        "result_unix": 1780963200
    },
    "meta": {
        "timestamp": "2026-05-30T09:00:23.150Z",
        "request_id": "0d573f08-6622-4519-b40f-e846ddd34f8b"
    },
    "status": "ok",
    "message": "OK",
    "success": true
}