sub get_et {
    my $et = shift;
    my ($days,$hours,$minutes,$seconds,$dstr);

    my $sec  = 1;
    my $min  = $sec  * 60;
    my $hour = $min  * 60;
    my $day  = $hour * 24;

    $et -= ($day  * $days)    if $days    = int($et / $day);
    $et -= ($hour * $hours)   if $hours   = int($et / $hour);
    $et -= ($min  * $minutes) if $minutes = int($et / $min);
    $seconds = $et;

    $dstr = sprintf(qq{$days Day%s, }, $days > 1 ? 's' : '') if $days;
    $et   = sprintf(qq{%.2d:%.2d:%.2d},$hours,$minutes,$seconds);
    return $dstr . $et;    
}
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