Highcharts and stockcharts, they both provide the options to add some padding at the x axis in order to avoid drawing some values on the edge of the plot area (left or right). According to the doc this is archived by employing the minPadding and maxPadding members of the xAxis property of the configuration object used for constructing the chart... but in practice this is not working for stockcharts. So i wonder how i can achieve this... i leave you with the examples...
var examples
P.D: Using property min for setting the lowest x value also isn't working.
The maxPadding is applied when you not call the setExtremes() method. In the Highstock, we call the setExtremes to set the range on the navigator, as a result padding is ignored.
To achieve your goal, you can define the tickLength parameter and set x param per labels.
Example: