icingaweb2/modules/monitoring/application/views/scripts/show/components/checkstatistics.phtml

<?php

/** @var \Icinga\Module\Monitoring\Object\MonitoredObject $object */

if ($object->getType() === $object::TYPE_HOST) {
    $isService = false;
    $checkAttempts = $object->host_current_check_attempt . '/' . $object->host_max_check_attempts;
    $stateType = (int) $object->host_state_type;
} else {
    $isService = true;
    $checkAttempts = $object->service_attempt;
    $stateType = (int) $object->service_state_type;
}

?>

<tr>
    <th><?= $this->translate('Last check') ?></th>
    <td data-base-target="_self">
        <?php if (isset($checkNowForm)) { // Form is unset if the current user lacks the respective permission
            echo $checkNowForm;
        } ?>
        <?= $this->timeAgo($object->last_check) ?>
    </td>
</tr>
<tr>
  <th><?= $this->translate('Next check') ?></th>
  <td>
      <?php if ($this->hasPermission('monitoring/command/schedule-check')) {
          if ($isService) {
              echo $this->qlink(
                  $this->translate('Reschedule'),
                  'monitoring/service/reschedule-check',
                  array('host' => $object->getHost()->getName(), 'service' => $object->getName()),
                  array(
                      'icon'                => 'reschedule',
                      'data-base-target'    => '_self',
                      'title'               => $this->translate(
                          'Schedule the next active check at a different time than the current one'
                      )
                  )
              );
          } else {
              echo $this->qlink(
                  $this->translate('Reschedule'),
                  'monitoring/host/reschedule-check',
                  array('host' => $object->getName()),
                  array(
                      'icon'                => 'reschedule',
                      'data-base-target'    => '_self',
                      'title'               => $this->translate(
                          'Schedule the next active check at a different time than the current one'
                      )
                  )
              );
          }
      } ?>
      <?= $this->timeUntil($object->next_check) ?>
  </td>
</tr>
<tr>
    <th><?= $this->translate('Check attempts') ?></th>
    <?php if ($stateType === 0): ?>
        <td><?= $checkAttempts ?> (<?= $this->translate('soft state') ?>)</td>
    <?php else: ?>
        <td><?= $checkAttempts ?> (<?= $this->translate('hard state') ?>)</td>
    <?php endif; ?>
</tr>
<?php if ($object->check_execution_time): ?>
    <tr>
        <th><?= $this->translate('Check execution time') ?></th>
        <td><?= $object->check_execution_time === null
            ? '-' : round((float) $object->check_execution_time, 3)
        ?>s</td>
    </tr>
<?php endif ?>
<?php if ($object->check_latency): ?>
    <tr>
        <th><?= $this->translate('Check latency') ?></th>
        <td><?= $object->check_latency ?>s</td>
    </tr>
<?php endif ?>