title: date time picker bootstrap
body: <p>I'm developing an application where i have to create a date time picker for users,but problem is that i'm using bootstrap date time picker from here:-
  <a href="https://tarruda.github.io/bootstrap-datetimepicker/" rel="nofollow">for date time picker</a> which is giving me another bydefault time.its 12 hours ahead form my local time so what i should do for this.
  if u have any idea to do on another method please suggest me.</p>
  
  <p>and another question is my i'm trying to converting user's time date into UTC time using this:-<code>$datetime1=gmdate("Y-m-d H:i:s", strtotime($datetime));
  </code> and its not converting correct UTC time.please suggest me what i have to do.</p>