public function setStartOfWeek( $offset ) {
		if( is_int($offset) ) {
			$this->offset = $offset % 7;
		} else {
			$this->offset = date('N', strtotime($offset)) % 7;
		}
	}
public function setStartOfWeek( $offset ) {
		if( is_int($offset) ) {
			$this->offset = $offset % 7;
		} else {
			$this->offset = date('N', strtotime($offset)) % 7;
		}
	}
public function setStartOfWeek ( $ offset ) { if ( is_int ( $ offset ) ) { $ this -> offset = $ offset % 7 ; } else { $ this -> offset = date ( 'N' , strtotime ( $ offset ) ) % 7 ; } }
Sets the first day of the week

@param int|string $offset Day to start on, ex: "Monday" or 0-6 where 0 is Sunday
Sets the first day of the week