source: code/Website/data-files/x-axis-labels-angle-offset.txt

{
  "title": {
    "text": "Our New House Schedule"
  },
  "elements": [
    {
      "type": "hbar",
      "colour": "#9933CC",
      "text": "Page views",
      "font-size": 10,
      "values": [
        {
          "right": 4
        },
        {
          "right": 4,
          "left": 8
        },
        {
          "right": 8,
          "left": 11
        }
      ]
    }
  ],
  "y_axis": {
    "offset": 1,
    "labels": [
      "Make garden look sexy",
      "Paint house",
      "Move into house"
    ]
  },
  "x_axis": {
    "offset": true,
    "labels": {
          "align":"center",
      "labels": [
        {"text":"January 0","rotate":0},
                {"text":"January 30","rotate":30},
        {"text":"January 60","rotate":60},
        {"text":"January 90","rotate":90},
        {"text":"January 120","rotate":120},
        {"text":"January 150","rotate":150},
                {"text":"January 180","rotate":180},
        {"text":"January 210","rotate":210},
        {"text":"January 240","rotate":240},
        {"text":"January 270","rotate":270},
        {"text":"January 300","rotate":300},
        {"text":"January 330","rotate":330},
        {"text":"January 360","rotate":360}
      ]
    }
  }
}