Check your /etc/localtime. Here's mine.
% ls -l /etc/localtime
lrwxr-xr-x 1 root wheel 25 Jul 7 08:04 /etc/localtime@ -> /usr/share/zoneinfo/Japan
^^^^^
% date
Sun Sep 20 23:34:12 JST 1998
^^^
Hope this helps:)
--
SUNAGAWA Keiki <kei_sun@ba2.so-net.ne.jp>
Happy Hacking!