On the jailbreaked Apple TV 2 login as root using ssh.
find / -name localtime
it should come up with
/private/var/db/timezone/localtime
y
now got to this director
cd /private/var/db/timezone/
remove link
view sourceprint?
rm localtime
and create new one for example in my case Madrid.
ln -s /usr/share/zoneinfo/Europe/Madrid localtime
to get your time zone
check what’s available in
cd /usr/share/zoneinfo/
Reboot and that should be it.