array(9) {
  [0]=>
  array(2) {
    ["start"]=>
    string(8) "07:20:00"
    ["end"]=>
    string(8) "07:50:00"
  }
  [1]=>
  array(2) {
    ["start"]=>
    string(8) "08:00:00"
    ["end"]=>
    string(8) "08:30:00"
  }
  [2]=>
  array(2) {
    ["start"]=>
    string(8) "08:35:00"
    ["end"]=>
    string(8) "09:05:00"
  }
  [3]=>
  array(2) {
    ["start"]=>
    string(8) "09:10:00"
    ["end"]=>
    string(8) "09:40:00"
  }
  [4]=>
  array(2) {
    ["start"]=>
    string(8) "09:45:00"
    ["end"]=>
    string(8) "10:15:00"
  }
  [5]=>
  array(2) {
    ["start"]=>
    string(8) "10:20:00"
    ["end"]=>
    string(8) "10:50:00"
  }
  [6]=>
  array(2) {
    ["start"]=>
    string(8) "10:55:00"
    ["end"]=>
    string(8) "11:25:00"
  }
  [7]=>
  array(2) {
    ["start"]=>
    string(8) "11:30:00"
    ["end"]=>
    string(8) "12:00:00"
  }
  [8]=>
  array(2) {
    ["start"]=>
    string(8) "12:30:00"
    ["end"]=>
    string(8) "13:00:00"
  }
}