[Solved]-highcharts x-axis is displaying the wrong data-Highcharts

In the xAxis config, you are using pointInterval, it should be tickInterval.

xAxis: {
    type: 'datetime',     
    dateTimeLabelFormats: {
        day: '%d. '

    },
    tickInterval: 24 * 3600 * 1000 
}

Example fiddle.

The pointInterval parameter should be placed in the plotOptions.series, not on xAxis.