code: public final void setUtc(final boolean utc) {
  		// reset the timezone associated with this instance..
  		this.timezone = null;
  		if (utc) {
  			getFormat().setTimeZone(TimeZones.getUtcTimeZone());
  		} else {
  			resetTimeZone();
  		}
  		time = new Time(time, getFormat().getTimeZone(), utc);
  	}
docs: Updates this date-time to display in UTC time if the argument is true.
  Otherwise, resets to the default timezone.
  
  @param utc
  The utc to set.