my $lc_time= POSIX::setlocale(&POSIX::LC_TIME);
POSIX::setlocale(&POSIX::LC_TIME, "C");
my $ret=POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));
my $lc_time= POSIX::setlocale(&POSIX::LC_TIME);
POSIX::setlocale(&POSIX::LC_TIME, "C");
my $ret=POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));