Accepted answer

The implementation will be very easy with Highcharts. You can just use two x-axes, hide the first one and adapt the second one for your needs. For example:

xAxis: [{
    visible: false
}, {
    lineWidth: 2,
    min: -0.5,
    max: 2.5,
    gridLineWidth: 1,
    categories: ['30 Days Before', 'Insight Period', '30 Days After']

Live demo:

API Reference:

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