protected function MicroformatEnd($offset = true)
{
if ($this->AllDay() && $this->StartDate) {
$time = "00:00:00";
$end = new sfDate($this->StartDate);
$date = $end->tomorrow()->date();
unset($end);
} else {
$date = $this->EndDate ? $this->EndDate : $this->StartDate;
$time = $this->EndTime && $this->StartTime ? $this->EndTime : (!$this->EndTime && $this->StartTime ? $this->StartTime : "00:00:00");
}
return CalendarUtil::Microformat($date, $time, $offset);
}