function notifytimesRange($advance) {
$start = date('Y-m-d H:i:s', max(strtotime("NOW"), strtotime($this->dtstart)));
$end = date('Y-m-d H:i:s', min(strtotime("NOW + $advance DAYS"), strtotime($this->dtend)));
function notifytimesRange($advance) {
$start = date('Y-m-d H:i:s', max(strtotime("NOW"), strtotime($this->dtstart)));
$end = date('Y-m-d H:i:s', min(strtotime("NOW + $advance DAYS"), strtotime($this->dtend)));