title: Google Chart Line Chart hours and minutes
body: <p>I'm trying to use Google's chart API to show a line chart.<br>
  I have created a data table with two columns, a date and a numeric value. The line is displayed correctly but the labels on the X axis are missing.
  All the data are in the same day, but at different hours. If I edit the dates in order to spread them over different days everything works.<br>
  I need to focus my chart in one day only and show hours and minutes on the X axis.<br>
  How can I do that?</p>
  
  <p>Thanks.</p>