{
    "mark": "circle",
    "data": {
        "values": [
            {
                "value": 1,
                "date": "28 Oct 2017 22:00"
            },
            {
                "value": 2,
                "date": "28 Oct 2017 23:00"
            },
            {
                "value": 3,
                "date": "29 Oct 2017 00:00"
            },
            {
                "value": 4,
                "date": "29 Oct 2017 01:00"
            },
            {
                "value": 5,
                "date": "29 Oct 2017 02:00"
            },
            {
                "value": 6,
                "date": "29 Oct 2017 03:00"
            },
            {
                "value": 7,
                "date": "29 Oct 2017 04:00"
            }
        ],
        "format": {
            "parse": {
                "date": "utc:'%d %b %Y %H:%M'"
            }
        }
    },
    "width": 800,
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "encoding": {
        "size": {
            "value": 500
        },
        "x": {
            "field": "date",
            "scale": {
                "type": "utc"
            },
            "timeUnit": "utcyearmonthdatehours",
            "type": "temporal",
            "axis": {
                "format": "%d %b %H:%M"
            }
        },
        "y": {
            "field": "value",
            "type": "quantitative"
        }
    }
}