public Calendar getStart() {
		Calendar cal = Calendar.getInstance();
		cal.setTimeInMillis(start);
		return cal;
	}
public Calendar getStart ( ) { Calendar cal = Calendar . getInstance ( ) ; cal . setTimeInMillis ( start ) ; return cal ; }
Returns the start of the interval. This is the whole date that was
specified during instantiation, even if it's too detailed for the given
interval unit.

@return the start of the interval