code: public function getArchiveDate() {
  		$year = $this->getArchiveYear();
  		$month = $this->getArchiveMonth();
  		$day = $this->getArchiveDay();
  
  		if($year) {
  			if($month) {
  				$date = $year . '-' . $month . '-01';
  				if($day) {
  					$date = $year . '-' . $month . '-' . $day;
  				}
  			} else {
  				$date = $year . '-01-01';
  			}
  			return DBField::create_field("Date", $date);
  		}
  	}
docs: Returns the current archive date.
  
  @return Date