title: Is there an easier way to get start of current day time than this?
body: <p>I basically want to get zero or beginning hour for currrent day.</p>
  
  <pre><code>def today = Calendar.instance
  today.set(Calendar.HOUR_OF_DAY, 0)
  today.set(Calendar.MINUTE, 0)
  today.set(Calendar.SECOND, 0)
  println today // Mon Mar 15 00:00:00 SGT 2010
  </code></pre>