use POSIX qw(locale_h);
use POSIX qw(strftime);
use locale;

#setlocale(LC_TIME, "en"); #from OS, set your locale to something like france or Russian, than try to comment/uncomment this, see the difference.
for (0..11) {
    print strftime("%B", 0, 0, 0, 1, $_, 96), "\n";
}