Hi, @utu.
I am using K 7.2 right now.
I've got the local date and time on the clock by adding tz=localtime in
/mnt-system/boot/syslinux/syslinux.cfg in the line APPEND of the section knoppix:
APPEND lang=en keyboard=es xkeyboard=es apm=power-off initrd=minirt.gz nomce libata.force=noncq hpsa.hpsa_allow_any=1 loglevel=1 tz=localtime