# Get port visit events with a custom polygon and duration filter (POST) (/docs/examples/events/post-example4)



**Query parameters**

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

**Request body**

| Field       | Value                                         | Description                       |
| ----------- | --------------------------------------------- | --------------------------------- |
| `datasets`  | `["public-global-port-visits-events:latest"]` | Port visits events dataset        |
| `startDate` | `2017-01-01`                                  | Start of the date range           |
| `endDate`   | `2017-01-31`                                  | End of the date range             |
| `vessels`   | `["e0248aed9-99b4-bae7-6b87-ff0a3c464676"]`   | Vessel id to filter events for    |
| `flags`     | `["ATG"]`                                     | 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-port-visits-events:latest"],
        "startDate": "2017-01-01",
        "endDate": "2017-01-31",
        "vessels": ["e0248aed9-99b4-bae7-6b87-ff0a3c464676"],
        "flags": ["ATG"],
        "duration": 60,
        "geometry":{
            "type": "Polygon",
            "coordinates": [
              [
                [
                  30.552978515625,
                  46.255846818480315
                ],
                [
                  31.22314453125,
                  46.255846818480315
                ],
                [
                  31.22314453125,
                  46.59661864884465
                ],
                [
                  30.552978515625,
                  46.59661864884465
                ],
                [
                  30.552978515625,
                  46.255846818480315
                ]
              ]
            ]
          }



    }'
    ```
  </Tab>

  <Tab value="Python">
    ```python
    result = await gfw_client.events.get_all_events(
        datasets=["public-global-port-visits-events:latest"],
        start_date="2017-01-01",
        end_date="2017-01-31",
        vessels=["e0248aed9-99b4-bae7-6b87-ff0a3c464676"],
        flags=["ATG"],
        duration=60,
        geometry={
            "type": "Polygon",
            "coordinates": [
                [
                    [30.552978515625, 46.255846818480315],
                    [31.22314453125, 46.255846818480315],
                    [31.22314453125, 46.59661864884465],
                    [30.552978515625, 46.59661864884465],
                    [30.552978515625, 46.255846818480315],
                ]
            ],
        },
    )
    ```
  </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-port-visits-events:latest'],
        startDate: '2017-01-01',
        endDate: '2017-01-31',
        vessels: ['e0248aed9-99b4-bae7-6b87-ff0a3c464676'],
        flags: ['ATG'],
        duration: 60,
        geometry: {
          type: 'Polygon',
          coordinates: [
            [
              [30.552978515625, 46.255846818480315],
              [31.22314453125, 46.255846818480315],
              [31.22314453125, 46.59661864884465],
              [30.552978515625, 46.59661864884465],
              [30.552978515625, 46.255846818480315],
            ],
          ],
        },
      }),
    })
    const data = await res.json()
    ```
  </Tab>
</Tabs>

**Response**

```json
{
  "metadata": {
    "datasets": ["public-global-port-visits-events:v3.0"],
    "vessels": ["e0248aed9-99b4-bae7-6b87-ff0a3c464676"],
    "dateRange": {
      "from": "2017-01-01",
      "to": "2017-01-31"
    },
    "encounterTypes": [],
    "flags": ["ATG"],
    "geometry": {
      "type": "FeatureCollection",
      "features": [
        {
          "type": "Feature",
          "properties": {},
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [30.552978515625, 46.255846818480315],
                [31.22314453125, 46.255846818480315],
                [31.22314453125, 46.59661864884465],
                [30.552978515625, 46.59661864884465],
                [30.552978515625, 46.255846818480315]
              ]
            ]
          }
        }
      ]
    }
  },
  "limit": 1,
  "offset": 0,
  "nextOffset": 1,
  "total": 1,
  "entries": [
    {
      "start": "2017-01-01T00:00:00.000Z",
      "end": "2017-01-01T09:35:02.000Z",
      "id": "4f76e3bf40fcb9af92f6e7250154c86d",
      "type": "port_visit",
      "position": {
        "lat": 46.3181,
        "lon": 31.0484
      },
      "regions": {
        "mpa": [],
        "eez": ["5695"],
        "rfmo": ["IWC", "ICCAT", "GFCM", "ACAP"],
        "fao": ["37", "37.4.2", "37.4"],
        "majorFao": ["37"],
        "eez12Nm": [],
        "highSeas": [],
        "mpaNoTakePartial": [],
        "mpaNoTake": []
      },
      "boundingBox": [31.0767735168, 46.2917746863, 31.0090529428, 46.3757554864],
      "distances": {
        "startDistanceFromShoreKm": 28,
        "endDistanceFromShoreKm": 20,
        "startDistanceFromPortKm": 0,
        "endDistanceFromPortKm": 0
      },
      "vessel": {
        "id": "e0248aed9-99b4-bae7-6b87-ff0a3c464676",
        "name": "ONEGOOTRA",
        "ssvid": "305656000"
      },
      "port_visit": {
        "visitId": "ffe81fe2608c6de1799a701b736951ca",
        "confidence": 4,
        "durationHrs": 9.58388888888889,
        "startAnchorage": {
          "anchorageId": "40c652c5",
          "atDock": false,
          "distanceFromShoreKm": 28,
          "flag": "UKR",
          "id": "ukr-mykolayiv",
          "lat": 46.291774686340844,
          "lon": 31.076773516760372,
          "name": null,
          "topDestination": "NIKOLAEV"
        },
        "intermediateAnchorage": {
          "anchorageId": "40c65295",
          "atDock": false,
          "distanceFromShoreKm": 26,
          "flag": "UKR",
          "id": "ukr-mykolayiv",
          "lat": 46.30317322627217,
          "lon": 31.073053845170914,
          "name": null,
          "topDestination": "NIKOLAEV"
        },
        "endAnchorage": {
          "anchorageId": "40c64c1b",
          "atDock": false,
          "distanceFromShoreKm": 20,
          "flag": "UKR",
          "id": "ukr-mykolayiv",
          "lat": 46.37575548639163,
          "lon": 31.009052942845823,
          "name": null,
          "topDestination": "NIKOLAEV"
        }
      }
    }
  ]
}
```