# Get loitering events with a custom polygon and duration filter (POST) (/docs/examples/events/post-example3)



**Query parameters**

| Parameter | Value | Description                   |
| --------- | ----- | ----------------------------- |
| `offset`  | `0`   | Pagination offset             |
| `limit`   | `1`   | Max number of events returned |

**Request body**

| Field       | Value                                       | Description                       |
| ----------- | ------------------------------------------- | --------------------------------- |
| `datasets`  | `["public-global-loitering-events:latest"]` | Loitering events dataset          |
| `startDate` | `2017-01-01`                                | Start of the date range           |
| `endDate`   | `2017-01-31`                                | End of the date range             |
| `vessels`   | `["82be6f228-8ce4-26d1-bf81-3b7979d0c72f"]` | Vessel id to filter events for    |
| `flags`     | `["KOR"]`                                   | Filter by vessel flag             |
| `duration`  | `60`                                        | Minimum event duration in minutes |
| `geometry`  | custom `Polygon`                            | Custom region to filter events in |

**Request**

<Tabs items="['cURL', 'Python', 'JavaScript']">
  <Tab value="cURL">
    ```shell
    # Make sure to replace [TOKEN] with your API Access Token.
    curl --location --request POST 'https://gateway.api.globalfishingwatch.org/v3/events?offset=0&limit=1' \
    --header 'Authorization: Bearer [TOKEN]' \
    --header 'Content-Type: application/json' \
    --data-raw '{
        "datasets": [ "public-global-loitering-events:latest"],
        "startDate": "2017-01-01",
        "endDate": "2017-01-31",
        "vessels": ["82be6f228-8ce4-26d1-bf81-3b7979d0c72f"],
        "flags": ["KOR"],
        "duration": 60,
        "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  43.835981972515576,
                  -6.785011952437713
                ],
                [
                  43.83602857589722,
                  -6.785011952437713
                ],
                [
                  43.83602857589722,
                  -6.784984652340707
                ],
                [
                  43.835981972515576,
                  -6.784984652340707
                ],
                [
                  43.835981972515576,
                  -6.785011952437713
                ]
              ]
            ]
          }
    }'

    ```
  </Tab>

  <Tab value="Python">
    ```python
    result = await gfw_client.events.get_all_events(
        datasets=["public-global-loitering-events:latest"],
        start_date="2017-01-01",
        end_date="2017-01-31",
        vessels=["82be6f228-8ce4-26d1-bf81-3b7979d0c72f"],
        flags=["KOR"],
        duration=60,
        geometry={
            "type": "Polygon",
            "coordinates": [
                [
                    [43.835981972515576, -6.785011952437713],
                    [43.83602857589722, -6.785011952437713],
                    [43.83602857589722, -6.784984652340707],
                    [43.835981972515576, -6.784984652340707],
                    [43.835981972515576, -6.785011952437713],
                ]
            ],
        },
    )
    ```
  </Tab>

  <Tab value="JavaScript">
    ```js
    // Make sure to replace [TOKEN] with your API Access Token.
    const res = await fetch('https://gateway.api.globalfishingwatch.org/v3/events?offset=0&limit=1', {
      method: 'POST',
      headers: {
        Authorization: 'Bearer [TOKEN]',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        datasets: ['public-global-loitering-events:latest'],
        startDate: '2017-01-01',
        endDate: '2017-01-31',
        vessels: ['82be6f228-8ce4-26d1-bf81-3b7979d0c72f'],
        flags: ['KOR'],
        duration: 60,
        geometry: {
          type: 'Polygon',
          coordinates: [
            [
              [43.835981972515576, -6.785011952437713],
              [43.83602857589722, -6.785011952437713],
              [43.83602857589722, -6.784984652340707],
              [43.835981972515576, -6.784984652340707],
              [43.835981972515576, -6.785011952437713],
            ],
          ],
        },
      }),
    })
    const data = await res.json()
    ```
  </Tab>
</Tabs>

**Response**

```json
{
  "metadata": {
    "datasets": ["public-global-loitering-events-carriers:v20201001"],
    "vessels": ["82be6f228-8ce4-26d1-bf81-3b7979d0c72f"],
    "dateRange": {
      "from": "2017-01-01",
      "to": "2017-01-31"
    },
    "encounterTypes": [],
    "flags": ["KOR"],
    "geometry": {
      "type": "FeatureCollection",
      "features": [
        {
          "type": "Feature",
          "properties": {},
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [43.835981972515576, -6.785011952437713],
                [43.83602857589722, -6.785011952437713],
                [43.83602857589722, -6.784984652340707],
                [43.835981972515576, -6.784984652340707],
                [43.835981972515576, -6.785011952437713]
              ]
            ]
          }
        }
      ]
    }
  },
  "limit": 1,
  "offset": 0,
  "nextOffset": null,
  "total": 0,
  "entries": []
}
```