private function checkIsCampaignStarted($node) {
    // Campaign timezone.
    $campaignTimezone = new \DateTime($node->get('field_campaign_timezone')->getString());
    $campaignTimezone = $campaignTimezone->getTimezone();

    // All time of campaign.
    $localeCampaignStart = OpenYLocaleDate::createDateFromFormat($node->get('field_campaign_start_date')->getString());
    $localeCampaignStart->convertTimezone($campaignTimezone);

    // Current dates. + labels with dates.
    $localTime = OpenYLocaleDate::createDateFromFormat(date('c'));
    $localTime->convertTimezone($campaignTimezone);

    return $localTime > $localeCampaignStart;
  }