code: public boolean inThisDay(Date theTargetDate) {
  		Date[] thisDay = asDayRange();
  		return theTargetDate.compareTo(thisDay[0]) >= 0 && theTargetDate.compareTo(thisDay[1]) <= 0;
  	}
docs: Checks if the target date in this delegate date
  
  @param theTargetDate
  @return