Method getTimezone

/**
 * Method to get the user timezone.
 *
 * If the user didn't set a timezone, it will return the server timezone
 *
 * @return \DateTimeZone
 *
 * @since 3.7.0
 */
public function getTimezone()
{
    $timezone = $this->getParam('timezone', Factory::getApplication()->get('offset', 'GMT'));
    return new \DateTimeZone($timezone);
}