通过Highcharts在Xaxis上显示时间线图

I am making a line chart with Highcharts and everything was fine but the X-axis. It's not displaying the right data which I have get from mysql. This is my chart right now but it is not what i expected. X-Axis row auto change all of my data to 01:[my minutes]:[my mins], example: my data is:2015-05-12 08:23:40 it auto convert to 01:23:40. i don't know whyI am making a line chart with Highcharts and ev