my $dt = get_val($doc, PublicInbox::Search::DT());
my ($yyyy, $mon, $dd, $hh, $mm, $ss) = unpack('A4A2A2A2A2A2', $dt);
$self->{ds} = timegm($ss, $mm, $hh, $dd, $mon - 1, $yyyy);
my $dt = get_val($doc, PublicInbox::Search::DT());
my ($yyyy, $mon, $dd, $hh, $mm, $ss) = unpack('A4A2A2A2A2A2', $dt);
$self->{ds} = timegm($ss, $mm, $hh, $dd, $mon - 1, $yyyy);