195     protected $interval = 1;  variable in Sabre\\VObject\\Recur\\RRuleIterator
326         $this->currentDate->modify('+' . $this->interval . ' hours');
338             $this->currentDate->modify('+' . $this->interval . ' days');
358                     $this->currentDate->modify('+' . $this->interval-1 . ' days');
364                 $this->currentDate->modify('+' . $this->interval . ' days');
393             $this->currentDate->modify('+' . $this->interval . ' weeks');
424                 $this->currentDate->modify('+' . $this->interval-1 . ' weeks');
451                 $this->currentDate->modify('+' . $this->interval . ' months');
457                     $tempDate->modify('+ ' . ($this->interval*$increase) . ' months');
487             $this->currentDate->modify('+ ' . $this->interval . ' months');
528                     $nextDate->modify('+ ' . ($this->interval*$counter) . ' years');
537             $this->currentDate->modify('+' . $this->interval . ' years');
576                         $currentYear+=$this->interval;
597                     $currentYear+=$this->interval;