title: Schedule job in laravel time interval
body: <p>I have three schedule job every hour in Kernel.php like below:</p>
  
  <pre><code>$schedule-&gt;command('get:twitter')-&gt;cron('* 1 * * * *');
  $schedule-&gt;command('get:facebook')-&gt;cron('* 1 * * * *');
  $schedule-&gt;command('get:googleplus')-&gt;cron('* 1 * * * *');
  </code></pre>
  
  <p>I want to run this three schedule in some time interval like below:</p>
  
  <pre><code>$schedule-&gt;command('get:twitter')-&gt;cron('* 1 * * * *');//after 1 hour
  $schedule-&gt;command('get:facebook')-&gt;cron('30 1 * * * *');//after 1.30 hour
  $schedule-&gt;command('get:googleplus')-&gt;cron('45 1 * * * *');//after 1.45 hour
  </code></pre>
  
  <p>Is this possible in laravel 5.1 </p>