function construct_session_full_date_time($datetime, $duration)
{
    $sessinfo = userdate($datetime, get_string('strftimedmyw', 'attendance'));
    $sessinfo .= ' ' . construct_session_time($datetime, $duration);
    return $sessinfo;
}
 private function construct_time($datetime, $duration)
 {
     $time = html_writer::tag('nobr', construct_session_time($datetime, $duration));
     return $time;
 }