Please tell us the output from
Code:
cat /proc/driver/rtc; date
  1. from Debian
  2. from Knoppix

My values are with Debian
Code:
rtc_time    : 07:38:25
rtc_date    : 2013-01-28
alrm_time    : 00:00:00
alrm_date    : ****-**-**
alarm_IRQ    : no
alrm_pending    : no
24hr        : yes
periodic_IRQ    : no
update_IRQ    : no
HPET_emulated    : yes
DST_enable    : no
periodic_freq    : 1024
batt_status    : okay
Mo 28. Jan 08:38:25 CET 2013
with Knoppix
Code:
 cat /proc/driver/rtc; date
rtc_time    : 07:41:11
rtc_date    : 2013-01-28
alrm_time    : 00:00:00
alrm_date    : 2013-01-29
alarm_IRQ    : no
alrm_pending    : no
update IRQ enabled    : no
periodic IRQ enabled    : no
periodic IRQ frequency    : 1024
max user IRQ frequency    : 64
24hr        : yes
periodic_IRQ    : no
update_IRQ    : no
HPET_emulated    : no
BCD        : yes
DST_enable    : no
periodic_freq    : 1024
batt_status    : okay
Mon Jan 28 08:41:11 CET 2013
Timezone for me is "Europe/Berlin"