title: UIDatePicker setting minimum and maximum hour
body: <p>How to set minimum and maximum hour to UIDatePicker ? At all is it possible ?</p>
  
  <p>I know how to set minimum and maximum date:</p>
  
  <p>[datePicker setMinimumDate: today];
  [datePicker setMaximumDate: nextMonthDay];</p>
  
  <p>What i want to achieve is that in picker user could select from 8 am to 10 pm every day.</p>
  
  <p>Thanks.</p>