How to get user timezone through API

Try this query:

{
  me {
    id
    time_zone_identifier
  }
  users (ids:[29417812]) {
    id
    time_zone_identifier 
  }
}

It give the timezone for the current user and a specified user:

{
  "data": {
    "me": {
      "id": "29417812",
      "time_zone_identifier": "Europe/London"
    },
    "users": [
      {
        "id": "29417812",
        "time_zone_identifier": "Europe/London"
      }
    ]
  },
  ...
}

Thanks David 🙂 🙂 🙂