[Solved]-HighCharts - Creating a Scatter with datetime-Highcharts

Ok the solution wasn't very hard after all:

Changed:

labels: {
    formatter: function () { 
        var date = new Date(new Date().getTime() - (this.value * 60 * 60 * 1000));
        return date.toDateFormat();
    }
}

And in the Server code return the hours instead of days and it works.